Msd hei module problems forum. HEI's (-) terminal to white wire on MSD.

Msd hei module problems forum I have not personally had that problem, and GM uses HEI on many of the high performance crate engines. I'm just gonna run a stock cap and rotor. I checked the 3-wire plug that comes from the module. The fact that the multispark feature poops out at moderate RPM kind of defeats the purpose IMHO. HEI back in the day and the box didn't help out ET or MPH Aug 9, 2018 · I have currently a stock HEI module setup expect coil, (coil is an MSD) in my 454. MSD box is your "SPARE" hei" MODULE NOW. I tired a 3. 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. I run 0. However, check out MSD digital HEI modules. MSD boxes haven't impressed me much. Either of htese units is a great changeover to use. Hmmm. 500 lift 108LSA 270 Single Plane 750 Mighty Demon (Annular) Aug 2, 2009 · They HEI's have too much advance and need to have the advance curve set approx like the AMC Curves. On the advice of MSD I installed a 6M but had to extend the "signal" wires from the pickup (green and violet) as well as the coil wires (orange and black). first gen 350 . I think this is a 6' cable, so it gives you leeway in where to mount the HEI module. Second Guess: They take a high-quality (well, I HOPE it's a high-quality, but I wouldn't put any bets on it) HEI module or coil, put their sticker on it, and mark the price up by ~50%. you end up with a hotter spark, up to 50,000 volts. No performance/mileage gains. May 8, 2008 · The capacitive discharge (a capacitor stores electricity not unlike a battery) ignition boxes were designed initially by MSD engineers to fire lean burning charges in two cycle motorcycles, and adapted to the mid seventies lean burn automotive market because the HEI didn’t have enough fire power to light off a lean mixture (mostly air and Jan 6, 2005 · The MSD 8203 is a "can" type coil for the Duraspark or modified module ignition. . i shook various wires after i restarted it the last time to see if i could replicate the stall,but it didn't have any effect. idles real nice, very smooth. Oct 12, 2024 · People have been using points to trigger an HEI module for decades. Apr 22, 2024 · MSD Pro-Billet distributor problems. Having said that, in my situation, I use an MSD 6AL to actually drive the coil. The HEI has the integral coil. I carry a spare and have gotten to the place I can swap them out in about 15 minutes. Same large cap HEI, for use with MSD ignition box and coil, and to remove the stock HEI module, use MSD 8400, uses 6A box, remote coil (no rev limiter), or the 8500, uses 6AL box, remote coil (with rev limiter in-box). 00? I would take a MSD triggered HEI module over some dizzy bushing shaft dizzy. Mar 14, 2012 · Replace module and problem solved. Mar 15, 2007 · When you replaced the HEI module, did you remove the screw that holds the wiring harness in the dist body? This screw it the end point of the ground to the coil, and has to be in place, and clean. Search the archives for people with MSD problems and that'll be another reason to consider HEI. Then got a Pertronix HEI, that sucked and gave me problems. Feb 6, 2008 · The HEI module burned up because of spark scatter or overheating (IMO). Jun 29, 2015 · Having Trouble with my MSD HEAT Module. 050 plug gaps and a true 32,000 volt output to the plugs (more than adequate for the properly set Apr 18, 2013 · I designed the small body conversions I do, have been doing them for over 30 years, and, was part of the team at GM that designed and developed the large cap HEI. Sep 15, 2005 · It is possible to trigger with the module, but why not bypass that animal completely? MSD products are expensive, but almost always deliver as promised. 080" plug gaps. May 22, 2020 · I have a GM stock HEI with an MSD rev limiter module (the one that replaces the stock module). Oct 22, 2016 · After burning up 4 modules and finding out my pickup coil was bad on my distributor, I replaced the entire system with a MSD HEI Billet Distrubuter with the MSD HEI HEAT Module. They are big and can cause mount failures on the AMC. 95, or the MSD Super HEI kit for $188. Nov 20, 1999 · This setup will give a stock HEI, with remote MSD blaster II coil. Built in rev limiter. The GM module is much more durable by being more forgivable in terms of voltage spikes and transient AC in the wiring caused by a faulty voltage regulator operating with an alternator. I sold it. Oct 17, 2011 · ZERO! I seriously doubt you can get to 7500 with a stock GM HEI module. Nov 25, 1999 · Since I use an MSD pickup and reluctor, and a GM 990 series HEI module, I get a much better pickup than the stock HEI pickup, and a good 7,000 rpm module, with the remote coil, no ballast wire or resistor, and with a good set of spiral core wires, . Oct 20, 2013 · hei eliminates the need for the nutter bypass, you hook up 2 wires, one for the ignition, the other for the tach. 30 Ohms primary resistance, at 134:1 turns ratio. I would look at the cap/rotor/carbon button/coil interfaces as well as the plug wires first. Nov 26, 2006 · What can cause module failure?'76 Chevy truck. I suspect this also puts less load/stress on the HEI module, as it doesn't end up delivering any real current to the MSD. The kicker this time is that I am able to run the car with a jumper from horn relay or anther 12v consent under the hood and it runs just fine. Jun 29, 2023 · it probably achieves much the same impact i have some idea how it works but not enough to fully explain it limits a volatge spike from the coil primary while its creating a spark via the secondary, to 400volts, at one of the transistor junctions in the module and of couse you tacho has to deal with this back emf as well. Another option to consider from MSD is the external coil/6a HEI conversion. It seems to be OK. Mar 9, 2008 · C3 Tech/Performance - MSD billet HEI problems (big pictures too) - This started about 1-2 months ago and my car has stranded me 2 times in that period. took the car apart for new radiator, electric fans, serpentine drive. New plugs and wires. p. Felt like a fuel problem so rebuilt the carb and put in a new fuel pump. Yanked that out, got an MSD pro billet with 6AL box and rev limiter, totally love it! Motor starts faster, plugs are cleaner, little more low RPM power, and nice to know the rev limiter is there too. Wiring for 'Test/Rescue Module' is fairly easy, and the 'Hard' part is finding a heat sink material to mount the module on. all this stuff cost about $90. Unquote. Digital: If using an MSD Digital-6 or Digital-7 Plus, or the Programmable Digital-7 Ignition Controls, the correct connection is when the timing is more advanced. The MSD CDI is a upgrade. Some of these coils have 0. Such noise or voltage fluctuations can quickly fry a MSD HEI module or the circuitry in a MSD ignition module. Installed the module in a MSD Streetfire HEI Distributor on my mildly modified 350. I bought a 1972 GMC Sierra 6 months ago. <flame suit on> Jun 17, 2012 · PIP signal is also routed to GM PCM to provide cranking signal. Haven't had any (ignition) problem since. go from there. If you want the part # I still got it in the garage. basically HEI changed a Jul 16, 2021 · C3 Tech/Performance - New HEI Distributor Ignition Module Failures - I put a new HEI distributor from O'Reilly's in my car less than 100 miles ago. You could take it all the way to the ground screw under the rotor for the module. Oct 3, 2004 · this is the combination that I want to use for my 289 mustang. 9% the performance of a 7-AL box and billet distributor up to about 8000 RPM. Degrading of this stuff can cause problems cold or hot. here is the GM HEI module diagram, controlled by the MC3334 chip with zero-crossing and current sensing, output through a Jul 17, 2004 · i redid my distributor over the winter. -Dave Feb 19, 2008 · Hello, I'm running a Mopar electronic distributor with a GM HEI module controlling it. Jul 16, 2021 · The HEI ignition modules are sensitive to voltage, anything less then 12v and you will have problems. Installed it over the weekend and I will have to say it was a straight forward simple install that took maybe a half hour. Same Problem. It's hard to throw away 100 dollar peice of junk! Mar 7, 2018 · Switching my MSD HEI module to a GM 990 and wanted to check if it’s a light coat of compound like the MSD or does the GM 990 module need the recessed area to be filled with compound? The computer store was out of Arctic Silver, so I picked up Thermal Grizzly Kryonaut and don’t want to use too much or too little. 3L ZQ8 black on black Sep 11, 2008 · HEI MODULE!!!! THAT'S THE PART I COULDN'T RECALL!! does my MSD distributor have a "module" internally? if so,are they prone to malfunction? i'll follow patman's advice and confirm my connections,but i'm fairly certain they're ok. Jan 17, 2007 · C4 Tech/Performance - Ongoing HEI Ignition module problem - My 86 has eaten ignition modules about every 6 months since I've owned the car (7 years). with an HEI chev module. Mar 18, 2005 · I have a MSD6AL. 3:1 CR, 0. The engine backfires through the exhaust with the msd and does not with the HEI. They can say it puts out 10 million volts, but if it only takes 20,000 volts to jump the spark gap, you will only be getting 20,000 volts to the plug. 9. Most replacement modules come out of china now, if you can get and original GM module I would try that next after checking the voltage at the distributor. Any thoughts? Did I smoke the module? Jun 14, 2013 · I ran HEI in my car for years with no problems. Otherwise I dont really see a need to "upgrade" when people are going plenty fast even with bone-stock HEI's. Aug 26, 2007 · For starters, the car is a 57 chevy with a 383, and using an HEI with MSD blaster HEI coil. The ignition offers capacitive discharge technology and will fire a series of multiple sparks that lasts for 20 degrees of crankshaft rotation when the engine is running under 3,000 rpm. Sep 8, 2018 · I had a MSD in my avatar 49 Chevy for 17 years and just a few months ago switched it back to a regular GM HEI unit. I like the looks of their module, but I am not sure if it is as reliable as the OEM style. I want to get the duraspark dist. HEI module provided with 12v ignition power, EST signal from PCM, IDM signal from EDIS module. Jan 31, 2004 · HEI modules have a reputation for not providing decent spark after 4500-5000 rpm. Jan 13, 2011 · MSD vs. Mar 21, 2020 · Analog: If using an analog controlled MSD 6A, 6T or 6AL series, SCI series, 7AL series, MSD 8 or 10 or Blaster Ignition, the correct connection is when the timing is retarded. After that the MSD is worth a couple h. Stock HEI module attached to EDIS mount to control vehicle Check Engine Light. Apr 11, 2017 · But I've installed several HEIs in 50s-70s project vehicles starting in mid-1990s, and none of those ever had a module, pickup, or coil failure. Aug 24, 2014 · I took out the one in the truck and scraped the paint off on both sides where the grounding strap makes contact. Dec 9, 2013 · First Guess: Not a bit different from any other high-quality HEI module or coil. No problems with the unit per say other than my module went south for the second time and a new module is north of $110 whereas a GM Module is $30. The only HEI dizzys out there worth discussing is the Performance Distributors DUI Jun 30, 2005 · -are you using the white wire to trigger the msd6 or are you bypassing the HEI module and using the magnetic trigger?-Has this combination ever ran right?-is the center post (of the three posts of the internal coil) at the cap connector grounded? this is the metal strap or the wire that grounds the coil frame to the distributor body. Also put a Proform HEI in my 82 C10 in 2015. I recently installed an MSD module with a rev limiter, as I thought the root cause may be the crappy replacement modules and I wanted the stealth rev limiter capability. 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. Jun 15, 2021 · No MSD on any of them. Specially if I alreadyb had the MSD dizzy. DUI HEI Distributors Jump to Latest 9K views 7 replies 6 participants last post by ditchdog Jan 19, 2011 Jun 30, 2015 · Has anyone used the MSD E-curve distributor #8394? Looking at buying a new distributor for my L31 350 crate motor and been looking at the MSD E-curve and MSD pro billet hei #8365. Last about 10 minutes then fried. bought all the pertronix stuff from summit Mar 12, 2000 · Then a CDI MSD module (Summit sells the MSD-6A for $131. Picked another up at Auto Zone and it ran fine for the break in. 030 over. My problem is that I'm burning up coils. You just cut off the end at the HEI Module and crimp on Female Connectors. I'm at 4 years/10,000+ miles on this setup with no issues. The typical problem is that the engine stalls when hot, but a few minutes of rest will let it start back up. 5 ohm resistence in the primary side to best fire the HEI module. Jul 13, 2005 · I put their coil+module (P/N 8501) in my HEI after I started having heat problems with the original module. I still tend to shove an MSD box in anything I care about. Feb 13, 2010 · The 'Test Module' made from a HEI style module won't be nearly as powerful as the MSD unit is, But it doesn't come with the potential for problems he can't fix with the HEI clone. I have been having voltage issues and will be installing a different alternator tomorrow. my problem is that I was told that I needed a coil with . 2011 Chevy Colorado crew cab 5. I did a little research and found that several other people have had weird issues with them. This street fire CDI ignition is perfect for budget minded enthusiasts. Will see if this solves the problem. Mar 7, 2011 · (MSD Streetfire HEI Dist-- essentially an OEM version). Disappointing I have always used and sold MSD products. the ignition control module is in the distributor. Car starts just fine in the morning - drive it 30 miles or so to a friends house - work all day. The problem is that you still have points. Even with all these problems it is a equal to the DuraSpark Stock Igntion. So now all i have is a Accel module and a MSD coil. It's from relatively new MSD moduleSo, it should be. Mar 17, 2004 · With the HEI coil in cap there is a lot of heat in the distributor which could affect the longevity of the capacitor, but the module is more sensitive to heat and you're not having any problem with it. And of course the digital 6. I would get another HEI module as a spare for my MSD! PS I runa Dave Ray small base as a magentic trigger for the MSD. Aug 5, 2003 · Well now I don't have the MSD 6AL box on the car. Jul 14, 2006 · I have one with about 2k miles on it, "worked" great until the module crapped out 11:00 pm. MSD weights and center also in order to get the curve where I want it. I replaced my plug wires during the dowtime for digital 6 repair and again it ran well after that too. May 26, 2014 · After installing the new distributor same issue, fired right up for about 10 minutes then died out with no spark, 12v at the pin (when unplugged form the HEI). Sep 29, 2008 · Im running an MSD blaster two internal coil on my gm hei distributor I cant seem to get myself not to have any miss firings everything is brand new except for the coil. Which is only 6 months old I put that one in because one I put in 7 monthes earlier had a bad main power wire. used the pickup and HEI 990 module but with an external coil using an msd adapter harness). There are plenty of posts to do the MSD or the HEI conversion. Only ran that one for the rev limiter feature. May 22, 2020 · If you're having problems with repeat module failures, it's time to find another ignition coil. This thing failed me tonight (had to tow car home) and I have also had problems in the past with GM and aftermarket HEI modules. 73 gears. Jul 2, 2012 · Right -- follow the HEI instructions, not single coil instructions. Then I will get my MSD back again. I also checked that the grounding wire from the internal module is making a good connection. Well with all that i've heard seems the combo of the 6AL, MSD coil, Accel module is what was frying my Cap and rotor. when the weather breaks I'll go junking and aquire a TFI coil and remove the MSD setup and go stealth HEI. I also carry a plate with a HEI module mounted to it is my backup if the MSD craps out. I've eaten two 1. 2 use HEI distributors and the other one uses a Dave Ray small body HEI Keep it simple I do like the idea of the rev limiter HEI module I have been drag racing for over 21 years and never felt a need to use an MSD box I have had friends test out the 6AL vs. Also, the magnetic pickup has a pair of wires that go to the module, these wires are special, so they shouldn't break when the vacuum advance moves Apr 9, 2014 · No, not trying to run 2 modules. Mar 1, 2009 · Over the winter I took the dead duraspark module and gutted it and mounted the HEI module inside and hooked the factory wires up to it. For reference. Oct 8, 2022 · Are the MSD 83647 ignition module and MSD 8225 coil worth it (total around $260+ship+tax), or should I be looking at something else? 1968 Chevelle Malibu 454, mild cam, 30 over, 12-bolt 3. Apr 16, 2009 · Quote:MSD is claiming 42000 volts max and other perks, you bring up a good point thought. The first MSD failed due to water intrusion. Truck ran great for 4 months then one day started sputtering and wanting to stall if I got more than 1/2 throttle. May 14, 2008 · Add an MSD module and coil to your HEI and you'll have 99. Fired it up later for a test drive and about 10 seconds later-poof. . 73 rear 1977 Corvette 350, performance turd but fun to drive Feb 4, 2019 · ChevelleFan wrote: With that said, I run the 8pin module, but just let the module trigger the MSD box. Is the HEI you bought one of those fine Pro Comp Electronics for 50. The recommened coil is a Bosch coil from a volvo or bmw new at $80 thats not a go. Although I did blow a couple of fuses running a MSD HEI module b/c that sucker pulled so many amps. 5 ohm internally resisted coils. I had the MSD HEI module in temporarily and the car seemed to be running quite well. If the box happens to die on the road I can unplug one and plug another one in with less hassle than changing distributor on side of road. symptoms exactly the same both times. I use BWD from advance on customer stock vehicles. , but nothing you would ever notice. I have the HEI C-terminal connected to the white wire on the MSD. got a pertronix HEI coil, pertronix module, pertronix cap and rotor and went to napa and got a new connector and capacitor. I won't use anything else on my personal and customers performance vehicles. i'm thinkin' that the offending part is Aug 31, 2023 · I also never had a OE HEI module fail either. Wouldn't start so we took the module to the store and had it checked, it was May 3, 2013 · I have a 3 year old msd HEI streetfire p/n 8362. Maybe the technology is WAY better with the modules Etc for the HEI systems in the aftermarket nowadays, But i can tell you after that experiance I will never go with HEI again. 5:1 CR. The MSD module is a direct replacement for the stock module. 1969 Chevelle 300 454! finally, 29-3200 stall, TH400 and moser 12 bolt 3. They all use a real, GM design HEI module, 4 or 8 pin, NOT a Chinese TCBI module that ISN'T a real HEI, but is touted to be. Long story short-had to use an old HEI today to break in a cam,fired up and ran about 10 seconds then poof. Apparently hecho en china, but supposed to be msd's performance low budget multi-spark setup. HEI's (-) terminal to white wire on MSD. The have a ground spark problem thru the distirbutor body and loose the spark energy that way. Jan 29, 2008 · I had an MSD module for an HEI. Oct 25, 2024 · The HEI's increased thirst for power comes from the coil being part of the HEI module in the dizzy cap unless you have a detached coil HEI set-up (like the MSD or the Edelbrock Pro-Flow 4 HEI distributor I have). Jan 3, 2009 · I used one of the MSD dust covers that eliminates the internal HEI coil and allows for use of an external coil(I had it set up like this even before adding an aftermarket box. Sep 29, 2013 · Usually, an HEI module that has intermittent problems has trouble with heat. As a long shot there could be a problem with the module causing the capacitor failures. Oct 21, 2017 · The MSD 8207 is a great E core coil you can use with HEI, I use one with the above module, as does a friend who runs low 11s with his street driver, 6500 rpm max, NA, 11. At minimum, test the ignition coil for spark intensity using an HEI-calibrated spark tester. I guess you better have AAA or a pair on shoes in the trunk ! Oct 20, 2012 · My problem is it's been hard to get reliable new hei distributors or replacement parts as time has gone by in my 55 I prefer the MSD because it has a small cap and the remote box. Mine is that about two years ago I was having problems with way too much heat building up. Truck is bone stock except a Street Fire 8362 HEI distributor. Sep 13, 2008 · As I said before, I purchased the MSD 8860 cable from Summit for ~$12. Thanks for the input guys. Apr 11, 2008 · It's using the Motorcraft distributor, but you use a GM HEI module to 'Fire' the coil You have to do some moderate wiring, but you are using a module that uses a full 12 volts, and the module is reliable, available everywhere (even in salvage yards!) and the module us usually around $20 to $50 ('79 Chevy Impala with 350 V-8 engine for source) May 7, 2012 · Running that ground is a good idea. Apr 28, 2009 · HEI preforms well enough. 0 ohm internally resisted coil, and the car barely runs. On your HEI module, what are you connecting the B-terminal to? MSExtra2 manual says to go to D16. May 21, 2024 · Flipper, alternatively, get that MSD 6AL box and use the HEI's mag trigger only. The connection to the distributor becomes the MSD 8860 harness. Oct 22, 2016 · After burning up 4 modules and finding out my pickup coil was bad on my distributor, I replaced the entire system with a MSD HEI Billet Distrubuter with the MSD HEI HEAT Module. According to MSD, any weakness in the voltage system can make the module malfunction. I'm not running a ballast resistor as the HEI module doesn't like using one. Holley 4bbl with vaccum secondary. 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. I have new wires and plugs and the cap and rotor look good. the distributor handles higher rpm's better, problems are easier to diagnose and you end up with a brand new distributor that should give you many years of trouble free service, I May 25, 2013 · It is not as robust as the GM module is. 95, which includes the MSD-6A, remote coil and mounting bracket, dust cover and coil wire, but it is an conventional oil filled coil). I've seen a lot more rusty HEI's than MSD's, but mine is really old so maybe that's why. I may have a power supply issue. 070" plug gaps. No codes set. In that case, the system really isn't HEI anymore. Check Engine Light functions properly. An ohmmeter can tell you if a coil is bad. owq rks nudhwq vnazxo nsqj tsoikr jdpxn rurpsd xrsya dgcjrv