Gm hei module heat sink. It didn’t take delco long to figure out the problems.

Gm hei module heat sink Also it starts on the first hit every time, no matter how cold it is or how long it's been sitting. There are two pins on the back of the module that you need to break off so it will sit flat. This is significant power to be radiated as heat. If you want to test the module just to know if it’s good, maybe someone on here can help with that. Keep in mind, we are talking about mating two almost perfectly flat metal surfaces. If not, what is an aftermarket equivalent May 7, 2004 · I have an old tractor that I am triggering a HEI module with points. My Delphi DS10071 module is still doing fine. 4. Re-assembled, checked my work. 8L V6 (#174151692390) b***i (695) - Feedback left by buyer. Squirt some onto your mount plate, put HEI module on the plate, and secure the plate and module to inner fender. Too much dwell-time causes modules to heat up. Jan 21, 2024 · The electronics of the GM HEI module are supposed to be pretty trick, from what I've read. I made a heat sink out of five layers of aluminum roof flashing, and it's been perfect for more than three years now. I'm running stranded steel core ht cables on my '73 Dart with a digital MegaSquirt ignition through a 7-pin HEI module without issues (besides using noise-filtering). Prolonged idling builds heat in the module and also in the engine bay under the hood. Parts Included: 1 - HEI Module, PN 83647. 3. Feb 14, 2010 · I'm using GMCBubba's Mopar/GM Hei ignition for my 52 chrysler hemi and I had a difficult time finding a good working GM HEI module. That should be heat sink compound, like you might find on a PC CPU. 7) Holley Commander 950 ECU Progressive TBI After tinkering with timing and rotor phasing for about a day, i got the engine running and starting smooth. 1K views 3 replies 2 participants last post by D. Computer chip heat sinks are good examples of adaptable (free) HEI heat sinks. 170. This is a white paste that enhances heat transfer to keep the module cool. Part Number: MSD-83647 3. Past year. Aug 31, 2023 · You should never use dielectric grease under the HEI module as a heat sink. I ran the wires to the inside fender under the ignition coil where I mounted the GM module and heat sink (aluminum plate). May 29, 2019 · I am in the process of converting this MSD distributor to a remote mount HEI Module by removing the MSD distributor's internal circuit board/module and replacing it with an external mount 4 pin HEI module. Thoroughly clean the module and mounting spot on the dizzy with alcohol, electrical circuit cleaner or NON-FLAMMABLE brake cleaner. bought all the pertronix stuff from summit These power-packed modules are direct replacements for GM or Ford electronic distributors, taking your RPM range performance to the next level. Magnum engines have a similar-looking e-core coil, but would have to fab your own custom cable, if that interested in staying more-Mopar. PN 83647. The last Sep 11, 2017 · The heat sink under the HEI module is probably overkill since GM just mounted to an aluminum plate inside the distributor. Also put a Proform HEI in my 82 C10 in 2015. I hope this bracket will help cooling of the HEI module and at same time goes hand in hand with stock appearence. 8. You could also mount the module to a big heat sink. module? just finished up. Dielectric grease will actually trap heat within the module. 79: Quantity: Add to Cart Feb 3, 2014 · I'm not sure why they bothered to use that I terminal in the diagram, as you should be able to connect the 12V from the ignition directly to the B terminal on the GM module. idles real nice, very smooth. Which is 1/250th of the 3 amps on the points normally. Any HEI module will work and there are plenty to choose from. Hot summer days, cool winter nights. Sep 29, 2017 · I've got a gm HEI module (4 pin) that's installed on a heat sink which in turn is installed on a bracket I fabbed which is attached to the inner passenger side fender. (Like the 1977 Chevette). 00 + Sold in packs of 1 x 1: $23. It is NOT the same as silicon grease, which some people seem to think. I have it wired according to the picture. The cooler you keep the module the longer it will last. Verified purchase. Find an original GM 990 module. Jan 13, 2025 · Ignition Module Heat Sink, Buick, Cadillac, Chevy, GMC, Oldsmobile, Pontiac, Each. To ensure you have enough ‘fire’ under the hood select from five modules, based on your OE application, which work in sync when paired with a Flame-Thrower coil - significantly increasing spark plug Sep 4, 2014 · A 'Gob' of heat transfer paste will hold the module up when installed, then when the paste gets hot and moves away from the module it leaves an air gap that is NOT sufficient to keep the module cool. Anyways this is the correct image. Heat is what kills these things. I've tried searching but this topic is old and all the GREAT threads unfortunately have pictures/links that are mostly broken. Aug 12, 2011 · You've mentioned a GM HEI module, a Pertronix module, in Reply #4 you mentioned an HEI coil, where you also said the "car just misfires terribly at all rpms below 7500". Pick up is magnetic and oem new. Ignition Control Module, Heat Digital HEI Module, With Rev limiter, Each. Past 6 months. What GM HEI module (not brand) are you running 4 pin or 7 pin. This system runs a GM style 4 pin module installed on an alloy heat sink with insulating paste. Feb 16, 2017 · But, I would disagree with using Dielectric grease under the module. 5 ohm ] ign coil. For the heat sink I pulled an old PC power supply out of the garbage (PLENTY bad/useless ones around) and tore it open. all this stuff cost about $90. A few other points to consider: 1. Drill two holes in it to match the HEI module's mounting holes. 1 ©2003-2006 InteractivePHP, Inc. True High-Performance Modules Built For HEI Distributors, Produces 50% Higher May 4, 2020 · Thanks Jeff. The explanation goes on to state the features and advantages of the GM module, compared to other ignition modules. Since my truck was originally a TFI with the module on the inner fender, I just modified the original heat sink to mount the GM module. The engine really has never run better! BUT i go out for a test drive, and 4 miles from home the engine dies in the middle of Nov 26, 2006 · What can cause module failure?'76 Chevy truck. Even the old school HEI distributors were of substantial construction. They are the GM HEI Module, and the reluctor coil pickup. I would also recommend using a good quality HEI module. Jan 11, 2010 · I also cut up a flat piece of aluminum I had in the shop to use as the actual heat sink to go between the module and the finned surface of the case. The reluctor on the shaft generates an AC signal and the module converts it to square wave DC. MSD GM HEI modules replace all 4-pin modules used in HEI distributors with a vacuum advance canister. It comes with an adjustable rev limiter. And you started the thread with a description of a 240Z with a 1981 280ZX distributor and a GM HEI module (no mention of Pertronix until Reply #4). Modified the distributor for my Buick, used the base of an old HEI for a heat sink. but if you are working on an gm hei coil in cap system, the rubber washer between the cap and coil is covered with regular dielectric grease when installed. No paste = too hot module = early fail. May 17, 2024 · If you want just Google gm 4 wire module on mopar,Kawasaki,Ford,Toyota, etc. New Ignition Module GM HEI 4 Pin LX301 D1906HT Compatible with 1974-1988 GMC Buick Cadillac Oldsmobile P-ontiac Automotive Replacement Heat Sinks; Customer The thermal compound provides a way to thermally link an IC (integrated circuit) chip to a heat sink. First one I got lasted a half Apr 6, 2007 · It is call silicone base-heat sink compound and the Radio Shack part number is 276-1372. I would not use dialectric grease for anything other than doping a connection to prevent oxidation. 5 amps for stock Jan 29, 2022 · I removed the Motorcraft stock ignition box and switched to the 4 pin GM HEI ignition module. Make sure to use suppression wires and resistor plugs. Long story short-had to use an old HEI today to break in a cam,fired up and ran about 10 seconds then poof. GM GENUINE 10474610. I mounted it under the dash inside the car. Oct 8, 2002 · Heat sink compound is an electrical insullator that conducts heat. Which means that HEI module is quite literally 'taking the heat', instead of the points. And still no spark to distributor. Let the engine get cold, so tha the problem is not happening. Part #: 10474610 Line: ACD Shop for the best Ignitor Heat Sink for your vehicle, and you can place your Aug 14, 2017 · So i did the gm hei module conversion. This heat sink gets too hot to touch, which lets me know it doing it's job. $23. For her application GM does not rely on just the heat sink screwed to a tin fender to dissipate the heat. Jul 23, 2021 · You need a product that easily allows heat to move through it. The parts list is as follows: Standard Motor Products - LX-103 Ignition Reluctor Pickup; WVE - 1A4012 Ignition Reluctor; Speedway Motors - 91012338 Stock HEI Replacement Module; AC/Delco - 10474610 HEI Module Heat Sink. I wired the heat-sink fan to draw from the HEI's relay power out so that if my ignition is on the fan is going. Wired correctly to every post found. I verifed 4 pin. The HEI module used for this project was a Wells model DR100. I mounted the HEI module to an old Pentium heat sink I had laying around. Untruth: If you decide to eliminate the vacuum advance module you have to phase the rotor in the distributor. I also had stock GM HEIs in four 74-81 Chevy and Buick daily drivers that I can think of. The module was sent pre wired in an aluminum “box” with a lid with, machined heat sinks on it. May 10, 2006 · HEI Module It refers to Ford, Mazda, etc. Jan 20, 2010 · No grease, heat sink compound. The cheap parts store modules are junk. 5 amps, compared to about 5. Oct 21, 2019 · Module has a decent ground and has the heat sink compound. I have a centech wiring harness. Jul 15, 2024 · An older 4-pin ICM can be relocated from inside large, coil-in-cap HEI; to a retrofit of a remote heat sink (such as GM PN 10474610). I used the specified 4 pin GM module that Chevy used on some vehicles from '74 to sometime in the 80's. 5 out of 5 stars. 10 gears 200K miles Jan 8, 2018 · Some had stock internals, others were upgraded to MSD module, coil, rotor, and cap back when those kits were made in the USA and reasonably priced. Do this: 1. Aug 7, 2004 · You can force the failure mode by thermal shocking the pick up coil and the module to determine which one is causing the problem, but my money is on the pick up coil. Jan 4, 2010 · 1. Aug 2, 2009 Jun 27, 2010 · I guess he doesn't know the HEI module must be mounted to a heat sink or it won't last any time. GM bolted it to aluminum and you are bolting it to thin steel, which is a much poorer heat conductor. Safe n happy New Year ! Sep 18, 2019 · The HEI module will get warm to the touch and should be mounted to an aluminum heat sink. Trying to recall, think mid to late '90's Chevy/GMC trucks have what you need. 62. New blaster 2 coil. Picked another up at Auto Zone and it ran fine for the break in. I went thru two new ones from Pep Boys and two new ones from NAPA. heat sink in thermal contact with the cyl head, rendering the fins on the heat sink ineffective due to constant influx of heat from the head to the sink, ensuring the heat sink is always at the same temperature as the Dec 22, 2006 · Hei Module Grease. Don’t use grease (dielectric or otherwise), it must be heat sink compound to transfer the heat. DUI Performance Distributors has also been selling small body GM distributors modified to use an external HEI module for a while now. Jan 11, 2008 · Using a Ford Duraspark distributor to trigger a four pin GM HEI module mounted to this heat sink. 4 by 6 by 0. In the one picture my points are located above the oil filter. Positive accross and according to inyernet is good. Parts Included: 1 - HEI Module, PN 83647 1 - Tube of Heat Sink Compound 1 - Gray Tach Wire Jan 13, 2025 · Ignition Module Heat Sink, Buick, Cadillac, Chevy, GMC, Oldsmobile, Pontiac, Each. Note that I also mounted the Vreg near the distributor which seems simpler than way over on the firewall as Mopar did and I already had IGN power there for the HEI. Do not use MSD’s Spark Guard for a Dec 26, 2018 · It makes a better heat connection between the module and the dizzy base so heat generated in the module can flow into the metal base of the dizzy and then into the air. Jan 2, 2004 · The module will come with some heat sink compound, smear it evenly over the back of the module before bolting it down. Jan 16, 2006 · Fetch a piece of aluminum about ¼” thick by about 2” by about 3½”. Aug 1, 2010 · I used to drive my car daily for the first 4 years, then semi-daily the next couple, then sparingly the past two. At one time I had a 77 Olds Omega (Chevy Nova) and was going to convert to TBI. Better is to use Heat Sink Compound, which is the little tube of white "grease" that is provided with any new module that you buy. Jul 7, 2017 · It’s best to mount the HEI module to a piece of aluminum plate that acts as a heat sink to keep the module cool. May 27, 2013 · The GM style HEI needs to be attached to a good size heat sink to stay cool and reliable. May 11, 2022 · There is heat sink paste under the module AND under the heat sink. 4 and 6 Cylinder engines , but I believe the diagram is the same for an 8. Oct 12, 2008 · Re: heat transfer grease. You need to use a "Heat Transfer Compound" under the HEI module. The typical thermal grease is a silicone base filled with heat conductive oxides. Jun 13, 2015 · A HEI ignition module can draw up to 8 Amps in extreme conditions, and most of that is converted to heat, nominal 8x12V=96Watt, worst case 8x14. 1995-05 Chevrolet Blazer V6 4. They need to be installed w/a heat sink May 17, 2019 · 1 – I am going to mount the HEI module to a GM #10474610 heat sink and attach to the car’s firewall. I have the module mounted on an aluminum heat sink that's right behind the radiator fan so in theory it runs at a constant 150F or so and I've been through plenty of them too. Grease for a Computer CPU heatsink will also work from a Computer repair store or Amazon. 3=17 watts. When used with MSD's HEI coil, these plug-in modules create a potent high-energy spark to 9,000 rpm. I'm on my 4th NAPA module, each module lasted about 100-200 miles. Some replacement companies talk about them in the dialogue for THEIR products, neglecting to say the stock GM HEI module has the same attributes. Aug 8, 2008 · Don't know how to go back and edit my post but I got a label wrong on one of the wires. Had to remove inner-most fin so the module would fit. That is an awful lot of heat to dissipate from a small area. Try to heat the pick up coil and not the May 28, 2022 · With the 8-pin GM HEI module, best and easiest to use the GM e-core coil which goes with it since you just grab the GM cable which connects the two. Jan 27, 2010 · RR230 HEI Capacitor and Harness from module to side of cap 6 ½†RR231 HEI Capacitor and Harness from module to side of cap 10 ¾ RR233 HEI module to cap Harness 3 ½ RR234 HEI Capacitor and Harness from module to side of cap 8 ¾ TPL45 Heat sink compound for HEI modules—10 small tubes RR201 Coil frame ground—wire style Sep 3, 2019 · What is shown in the slant six site explanation is using ONLY the GM module mounted on an extruded aluminum plate mounted underneath a Mopar electronic distributor, triggered by the Mopar magnetic pickup coil. Coil (8366) Accel Distributor, coil and Plug wires. This Jul 9, 2011 · The mounting surface must act as a heat sink to prevent the module from burning up. Engineered with low saturation for maximum spark intensity to provide high efficiency and keep your engine in great shape! Jul 25, 2020 · I read the excellent thread here about using the 1996-2000 GM heat sink, coil, and coil bracket but it noted that the 1996-2000 HEI module uses a 0-5 volt square wave trigger and it won't work with the the Mopar distributor (reluctor/magnetic pickup). Grease will melt when the module get's warm. GM HEI distributor the entire time. i want to know what GM put underneath there, from the factory. I pulled a HEI out of truck in a salvage yard 22 years ago, cleaned it up and put into my 250 Chevy, its still running the same factory module that GM installed in 1976. Jul 1, 2021 · 1999-00 Cadillac Escalade Ignition Module Insulator Heat Sink. Aug 6, 2017 · The current flow path of the GM HEI is: batt +ve through coil, into module [ which acts as a switch ] through module mounting screws, into dist body, dist body to engine block. Same with poor machining, without a smooth, flat surface to mate with, the module can't transfer heat and will cook. GM electronics don't like to mix an match. In my former SL Coupe I had the HEI GM 4 pin chip on a heat sink, which is what I will do with the 128 wagon (and X, I bought two chips today from RockAuto, and the first heat sink from eBay). rev limiter for overrev protection. I removed the main transistors from the finned heat sink and fastened the GM module to it with the included conductive goo. The Module will mount in a stock HEI housing (by removing the original condenser assembly) or in MSD’s Pro-Billet HEI Distributor, PN 8365. 012 amps across the points. The ignition module is sitting on a heat sink with silicon grease. because it has a sizeable heat sink [ compared to some others ]. Make sure the dist clamp makes good contact with the dist body, it provides the ground return for the coil. heat soak on GM ign. Jan 15, 2011 · That is on my 300-6 shop truck and it has worked great. lots of people run cheap GM modules in place of their expensive modules. One thing also to check is to make sure you have the Aug 18, 2010 · So I took a 4"X3" old aluminum Pentium 3 heat sink and the fan that came with it and mounted my HEI module to it. On a GM HEI system the distributor itself acts as the heat sink. So he's absolutely wrong about heat not affecting it. Not having the variable dwell feature on a lot of the copies is a killer as previously mentioned. Genuine Parts 10474610 Igniter Heat Sink. Don’t forget to apply the heat sink grease to the underside of the module during final installation, without this the module will burn up. It's a thick white paste. Nov 19, 2021 · Buy GM Genuine Parts 10474610 Igniter Heat Sink: Heat Sinks - Amazon. (W,B,G and C). Nov 22, 2014 · Since you didn't, and are all pissed off, it sounds like you are new to developing things (not so easy when you try it yourself). The PN 10474610 heat sink was used on later computer-controlled ignition systems but will work with the 4-pin module when modified with some new holes. The motor circuit breaker prevents overheating if faulty switches are present. got a pertronix HEI coil, pertronix module, pertronix cap and rotor and went to napa and got a new connector and capacitor. Most thermal greases are silicone based but not all silicone greases are thermal compounds. Shop Ignition Module Heat Sinks at Summit Racing. If nothing else it should be readily available at a major electronics store or neighborhood computer shop. You can use regular white heat sink grease at any electronics source or store--even Radio Shack carries a tiny tube last I Ignition Control Module Heat Sink; Each ACDelco Professional, premium aftermarket Power Window Motor and Regulator Assembly is a high quality replacement for many vehicles on the road today. If you are not able to find any Heat Transfer Compound in the auto parts store, just go to a computer/electronics store and get the Heat Apr 21, 2010 · The tach doesn't read well at idle but the car runs nice. It's usually under $15. The transistor in the module closes (like points) and charges the coil. May 11, 2014 · GM HEI 8-pin Igmition Module GM epoxy Coil (from 1990 suburban 5. 5 out of 5 stars Mar 7, 2018 · I actually had my ICM fail due to the previous owner never having a clue that the distributor was a heat sink for the dang thing. Oct 22, 2016 · A few things to check: [1] Are you using the correct HEAT SINK compound between the module & dist. don't notice any difference in perfromance, but it idles nice and i did notice the exhuast smell wasn't quite as potent at idle. About a year ago I converted to a GM 4 pin ignition module. Nov 15, 2018 · Being that both Mopar and GM modules are all made off shore, I keep a spare module in the glove box but I have never needed it. After getting the first bad one, I had the store check each one before I would buy it. It is not designed to transfer Nov 14, 2024 · GM HEI small distributor module heat sink kit for Fiero 1985-1988 2. My question is about powering the coil and HEI module (bottom right pin - pin "B"). Feb 23, 2022 · In effect, the HEI housing actually becomes a heat sink for the module. No spark. GM went external,I don't remember the year you can grab the heat sink and mounting bracket from the bone yard probably most common is going to be 94-04 S10. The large cap HEI distributors just used the distributor body as the heat sink. In order to have maximum heat transfer from the module to the heat sink, you need as much metal to metal contact as possible. poss. 1994-96 Cadillac Fleetwood Ignition Module Insulator Heat Sink. Jul 17, 2004 · i redid my distributor over the winter. It comes with heat-sink gel included. 6 ohm [ stock HEI coil is 0. The purpose of the grease under the module is to transfer heat from the module to the distributor plate, to cool the module. Aug 13, 2007 · GM HEI 4 pin module (ask for a module for a 78 Camaro with a 350) Ford DuraSpark distributor (the 3 wire jobby - purple, orange and black) Ford E-core coil A heat sink for a CPU, and a CPU fan Bosch relay and harness electrical spade connectors and 18ga wire Instructions: The HEI module has 4 connections and a ground. The HEI module was cheaper, and was stupid-easy to wire in Apr 23, 2018 · Buy Twilight Garage Ignition Control Module 4 Pin HEI Distributor D1906 LX301 Compatible with 1974-1987 GMC Buick Cadillac Oldsmobile Pontiac: Distributors - Amazon. Same thing. com FREE DELIVERY possible on eligible purchases Jul 6, 2024 · That substance is there to provide heat transference to help keep the module cool. Module never failed. 3=7. You definitively want a heat sink. 7-0. If you can find an HEI with a remote (not in the cap), coil, it will work good. Buy Ignition Control Module - MSD - BK 3353813 online from NAPA Auto Parts Stores. It will need a good heat sink to avoid frying it. Installed correct with 13-13. I'm using an E-core type coil with this setup and it's wired such that the stock resistor wire is bypassed. Sep 7, 2022 · You should never use dielectric grease under the HEI module as a heat sink. the module's power dissipation is 9. If you want a cheap, bullet proof ign system, buy the MSD #83647 4 pin module. Grounded. Mine is Arctic Silver, high density polysynthetic silver thermal compound. May 18, 2022 · Gents, I hope you guys can help me out. Free Shipping - ACDelco GM Genuine Parts Ignition Module Heat Sinks with qualifying orders of $109. This stuff is like brylcream, A LITTLE DAB WILL DO YA. If it still works, you then know you didn't fry the HEI module. 5+ years ago you could get the parts store ones for under $30. Buy GM Genuine Parts 10474610 Igniter Heat Sink: Heat Sinks - Amazon Sep 28, 2016 · It's a must to use a good heat sink on the module. I bolted mine to a heat sink from a slot type computer processor. Oct 29, 2021 · Going with the HEI GM 4 pin module. When I first started using HEI, i had no idea how bad the market supply was. A GM Coil can be used or for maximum performance, use MSD’s HEI Coil, PN 8225. The sink should be at least 1/8 inch thick for rigidity, and should have at least 6 square inches of surface area open to air. With the appropriate heat-sink compound of course. Oct 12, 2024 · There are a handful of late-60s GM small body distributors with mag pickups, as used in the optional UHV system, and while these can easily be used to trigger an HEI module, these rare pieces are priced accordingly. The heat sink in this case is the distributor housing. Two wires go to the pickup in the distributor, one wire gets battery positive, to power the electronics, and one wire goes to the negative side of the coil. 8L V6 (#174151692390) d***s (366) - Feedback left by buyer. com Note: The attached heatsink will need some slight modification for the holes to line up on the HEI module. Sep 1, 2019 · It's not just dielectric grease that goes on the bottom of the HEI modules. I’m willing to bet the cause of repeat module failure is no thermal paste. very thin layer on the module then screw it down. Simply put: 1. 62 $ 31. The GM module does not require the resistance wire on the coil, so you can connect the coil directly to a 12V source. 4V=115Watt. Category: Ignition Control Module Heat Sink. May 24, 2018 · So the module heat dissipatioon is approx 4 by 6 by 0. They can be used with factory, aftermarket, or MSD HEI distributors. The results are increased horsepower and rpm range, and improved starting. 77 out of 5 stars Feb 19, 2021 · The pic with the red HEI is a reallllllly good conversion. ACDelco Ignition Control Module Heat Sink - 10474610. If you're a computer geek like myself then you probably have one laying around. I have the aluminum heat sink, with Super Lube 98003 Silicone heat sink compound behind the module. Nov 20, 2009 · use the heat paste for the module, the clearish dielectric grease is for coil/plug wires. To test reluctor pickup with a Digital Multimeter, set to LOW Ohms, measure across the two leads that are connected to the GM HEI Module BUT disconnect them first. Don't forget to heat sink that puppy Good! :sweat: Let us know how it works! Doc imp: Stimulate your GM or Speedway Motors distributor with this 4 Pin HEI replacement ignition module. The original HS compound was a white paste, but the better stuff now available conducts heat better [ & costs more ] is the silver based HS compound. I will have about six feet of sheilded cable to work with (MSD p/n 8862). Jun 26, 2016 · I'm assuming HEI here. MSD Digital HEI Module with TCD PN 83645 Parts Included: 1 - HEI Module, PN 83645 1 - Tube of Heat Sink Compound Feb 1, 2012 · Every original GM HEI I've ever seen has had a white heat sink compound under the module. Sound and speed performance is equivalent to or better than OE. Aug 2, 2022 · Also, when researching this topic I noticed that many (if not most) people seemed to be using WAY TOO MUCH grease/compound. I cut it from an old PC CPU heat fins. Jump to Latest 79' Chevy SWB G30 VAN converted to 4x4 48' Ford F-1 Truck. Sep 19, 2006 · The reason I had to replace one once was that I didn't bother with a heat sink on the first one. Aug 7, 2011 · Distributor, V8, Late Model GM HEI, Ext. 2 watts & modest heat sinking of the module can suffice. MSD HEAT Digital HEI Module PN 83647 Parts Included: 1 - HEI Module, PN 83647 1 - Tube of Heat Sink Compound 1 - Green Tach Sep 9, 2006 · I smear some heat-sink grease on the back of the module and button it up Funny, I'm in the process of refurbing a GM HEI distributor for a friend in Belgium. 1) The module has to have some dielectric grease under it to serve as a heat sink promoter so the module does not overheat and fail. Oct 22, 2024 · HEI's also need a 14 gauge wire to power them along with heat transfer grease under the modules. I thought it was a silicon based substance. Jul 2, 2009 · 1999-00 Cadillac Escalade Ignition Module Insulator Heat Sink. Nov 30, 2014 · This ensures that any gaps between the machined mounting pad and the module plate are filled and thermal conduction can effectively take place so the HEI base becomes a heat sink to draw the heat away from the module. 79: $0. However with a 0. That's probably why some people say use a silicone grease. The old grease was harder than hammered earthnot much conductivity going on there! Cleaned off the old crap, slathered on(the right amount)the correct heat-sink grease. Should I keep the HEI module (and wiring) away from the spark plug wires? 2 – Do I still need to use the HEI’s noise suppressor since I will be mounting the HEI module outside of the distributor? Oct 11, 2012 · The module produces a lot of heat and is heat-sensitive. It provides a really great thermal connection - kind of like gold plated contacts on the connections of your stereo, if you have them. Amazon has the specific heat sink for the module. If you are not able to find any Heat Transfer Compound in the auto parts store, just go to a computer/electronics store and get the Heat Aug 4, 2024 · HEAT SINK COMPOUND is the RIGHT material to use under the HEI 4 pin module. Heat sink compound comes with every new HEI module, and it's important to use it. So far so good!! COOL as a cucumber to the touch even after a highway May 30, 2006 · I don't have a pic handy but I'm fabbing the GM HEI setup also. It shares the heat sink with the coil. Your reading for a good Reluctor Coil Pickup should May 7, 2004 · I did a GM HEI module conversion 4 years ago on my '82 slant 6 Dodge truck. The brains (HEI Module) for all this is a GM design. It's a specific thermal grease or heat transfer paste like what's used between the processor and the heat sink in your desktop computer. The heat must transfer from the module to the distributor to make sure the electronics don't burn out within the module. 1996-05 Chevrolet Astro Ignition Module Insulator Heat Sink. -----An HEI module makes a LOT May 3, 2023 · PS make SURE you use the heat sink compound that comes with the module, or buy some if it doesn’t come with. 1991 Chevy Suburban 1/2 ton 2WD w/ chevy SBC 350-3/4 ton drivetrain upgrade w/4. Cant hurt to use dielectric on the connectors, but I thanks to another keep thermal paste on hand to deal specifically with the heat transfer end so the module wont cook off like the last one. At any rate there is enough there for you to figure out the rest of the module. You can use regular white heat sink grease at any electronics source or store--even Radio Shack carries a tiny tube last I Jun 26, 2019 · It uses a Marelli 0. You also have to use a quality heat sink compound between the surfaces to aid in the heat transfer. A cooler-running ICM will likely extend its usable life and help to prevent its failure. First you remove the old module, then clean off the pad on the distributor with an alcohol wipe (or equivalent) to remove old heat sink compound and clean the surface. Your HEI distributor body is a "heat sink", and the module is a specialized IC circuit. 1 - Gray Tach Wire. GM GENUINE Ignition : Ignition Control Module Heat Sink Auto Parts ALL THE PARTS YOUR CAR WILL EVER NEED Show Prices In US Dollars ($) Australian Dollars (AU$) Brazilian Real (R$) British Pounds (£) Canadian Dollars (CAD$) Chilean Pesos (CL$) Euros (€) Hungarian Forint (Ft) Japanese Yen (¥) Mexican Pesos (Mex$) New Zealand Dollars (NZ Jul 13, 2012 · Occasionally the matchbox goes bad, and if a new one cannot be found, you use a four wire GM HEI module, and mount it on a heat sink. GM introducted the 8-pin HEI in 1988 - full 14 years after the 4-pin HEI came out back in 1974 so its safe to assume its "better" than the 4-Pin HEI. Jul 17, 2020 · In the example GM HEI circuit that 1K resister means you are putting 0. Very common conversion on late 70's and 80's slant 6 with lean burn ignition. If you are swapping modules, be sure to remove all the old paste before installing new module + paste. I clipped the small connectors on the distributor pickup coil that hook in to the stock ZX module and crimped on larger connectors to the wires. Mount it securely to a flat metal surface away from the headers or other heat sources. The compound aids heat transfer. I use the stuff used in the computer world. More Power in Every Purchase - Join the Summit Rewards Program Today! Nov 30, 2014 · This ensures that any gaps between the machined mounting pad and the module plate are filled and thermal conduction can effectively take place so the HEI base becomes a heat sink to draw the heat away from the module. Part Number: ADO-10474610 4. I then used a small angle bracket to Jan 24, 2018 · There are two items inside the HEI the system that can go bad over time. Well, I've burned through a few modules. New Ignition Module GM HEI 4 Pin D1906HT LX301 Replacement For Buick Chevy Oct 25, 2024 · 1973 - 1979 F-100 & Larger F-Series Trucks - Duraspark / HEI hybrid ignition - I am doing a resto-mod restoration on my 75 F250. Dec 31, 2022 · You probably know this but, the module has to be mounted on a heat sink and have dielectric grease between it and the heat sink. Nov 14, 2024 · GM HEI small distributor module heat sink kit for Fiero 1985-1988 2. You must have some sort of heat sink to mount the HEI module to as it gets very hot. Would like your recommendation for the best mounting location for the GM ignition module? 2. Going to screw the ECU casing over the HEI module. MSD HEAT Digital HEI Module. Drove it 50 miles a day regularly, getting stuck in SoCal traffic at least once a day. The module generates heat. Fired it up later for a test drive and about 10 seconds later-poof. Lightweight aluminum alloy housing Nov 11, 2020 · GM HEI Module ALL81208 on sale now plus all the racing parts you need at Allstar Performance. Have 12v ignition. The heat sink compound, as the name implies, is used to transfer heat from the module to the heat sink and keep it cooler. Race HEI Distributors feature an electronic HEI Distributor module and 50,000 volt coil combination that optimizes spark energy and peak current to the spark plug in the 6000 to 8500 RPM range. Truth: According to Steve, “if you install your vacuum advance eliminator using the same holes in the housing that were originally used for the vacuum advance Nov 30, 2014 · i'm trying to figure out what goes underneath the HEI module? i'm not concerned about what "should" go underneath----i've heard "white thermal compound"/silicone heat sink/dielectric grease etc. Radio Shack does but, don't use auto, dielectric or white lithium grease or it'll just run and is not a heat sink. Picture of the module and heat sync. Pull the cap, get a heat gun and heat up the pick up coil. If that was changed sometime after the HEI went to computer control to something besides a heat sink compound I am unaware of it- regardless of what it looks like. Sep 18, 2016 · The HEI module gets pretty hot, whatever it's mounted to needs to act as a heat sink and carry heat away from it. S. Parts Included: 1 - HEI Module, PN 83647 1 - Tube of Heat Sink Compound 1 - Gray Jun 26, 2019 · It uses a Marelli 0. Jun 13, 2020 · Any GM technician, who was around when the HEI was in production, knows that it has a few quirks in its design, as the miles on the distributor accumulate. GM GENUINE 10474610 Info . It didn’t take delco long to figure out the problems. Securely mount it to a flat metal surface or bolt it to a big heat sink. I'm running my stock Duraspark II distributor on my 76 bronco with a 302. Mounting holes in the module body must be connected to engine/chassis ground (battery negative (–) post). Verifed wires again. Get a finned heat sink and use dielectric grease. Save Share (Chemtronics CT40 Heat Sink Grease) Attachments. And, if so, what is the part # if available. When mounting the GM 4-pin HEI module, always fasten it with dielectric, thermal or heat sink grease/paste on a clean, flat aluminum plate with plenty of fresh air circulation to dissipate the heat while in operation. Aug 18, 2012 · Hello TrailBeast, I am a new member I am here and very interested in this 8-Pin HEI module setup. Be SURE to use the heat sink paste with the module, between the module and the distributor housing! That's nearly 3000 RPM higher than most stock HEI Distributors. I will be leaving the MSD Distributor's existing magnetic pick-up in place and wiring it to the external HEI module. Oct 14, 2024 · If my memory is correct he machined the reluctor (8 pointed star thing) for a press fit on the Stude shaft, used a Hall effect, maybe, (all Mopar stuff) for the signal. 1 - Tube of Heat Sink Compound. I found that screwing it to the inner fender is not optimal. Aug 2, 2009 · Grease for HEI Module? Jump to Latest 2. Nov 30, 2014 · Auto parts stores should carry heat sink grease. Oct 5, 2013 · I'm going to mount the HEI module on a bracket that I will make in aluminum that will look like the Mopar ECU mounting bracket shown in the last picture. Same GM 990 module. Unfortunately no body tests thes modules for function so you don’t know which module is good. The GM 990 series or the NAPA TP45 would be my only choices to consider, if I were replacing a module. The factory Delco modules will vary dwell based on RPM. Heat will kill a module. The module comes with some heat sink Location: Main Index » Forum Index » Chevrolet Cars 1958-1970 » 1961-1964 Fullsize Chevys » Silicone grease for HEI module heat sink FusionBB™ Version 2. 2 - Mounting Screws and Star You use a thermal compound because the base of the distributor is used as the heat sink for the module. Using Super Lube 98003 heat sink compound. That said, if I were you I'd just take the path of least resistance and get another module from an 83. amazon. ohm primary resistance HE coil. I had seen the thread to retrofit the stock Bosch ICM, but not Yve's thread with the temp issue and to ballast or not. None of them ever failed. That's why it has heat sink grease applied to the module before installing it. Tried a second one. GM HEI Module with AC-Delco Heat Sink [Standard Motor Products LX301T and AC-Delco 10474610] Distributor grounding wire New Distributor Cap (Tall Style) modified [Standard Motor Products DR428] Aug 7, 2003 · The key to reducing heat buildup in the module is to use the special white grease supplied with new modules on the mounting side of the module. I also think lubricating the weights is likely to cause dust/dirt to accumulate there and cause more wear, but that is a toss up on the internet. The only other things connected to an HEI module are 12V feed, coil, and variable reluctor inside the distributor. 4 pin on heat sink. It also switches 7. . $31. Radio Sh!&# sells little tiny tubes and larger tubes of the heat sink compound - which is what you want. Dec 6, 2019 · The first few years of HEI production did have some module reliability issues. Feb 29, 2020 · It's usually heat that kills them. Note: Your module will be toast if you don't use the proper grease. My original plan was to run the ignition with the newer blue gromet ICM over the black one from 1975. 7v going to the coil + when running. I even tried the Echlin which was bad before I left the store. Adam Neater than mine. At coil and hei module. com FREE DELIVERY possible on eligible purchases www. 86 CJ7 258, Nuttered, TeamRush cap/rotor, E-core coil. 5 out of 5 stars Mar 21, 2009 · Going further, the heat sink on a 93 is bolted to the cyl head, atop the plate that the coil is mounted to, putting the alum. Recommedation for heat sink material to mount the GM ignition module? I can't go stealth, because I don't have the Ford Duraspark module (PO removed all wiring and module). 2. Use some heat sink material like Radio Shack PN 2760418. The HEI module generates a lot of heat that must be dissipated in order for the module to have long life. Google "ACDelco 10474610" for the best one. Run it without it for too long and you'll be replacing the module again. Mar 22, 2022 · Try to obtain the old NOS replacement module. Otherwise it won't last very long. 3L Ignition Module Insulator Heat Sink. This grease creates a better heat transfer path between the module and the distributor body so that the module tends to run cooler. xsx vzype ujnj pou ezoxb ysicz tuj vbnhzro dksozcpf hairxluo