How Does An Hei Distributor Work

Re: Converting coil style ignition to HEIwhat is involved? hm, kind of like a Honey do list! Maybe make a calender up to the day you have to have the truck ready, and make sure you have everything done for your part in jumping over the broomstick. I started with a mini distributor from a 1980 S-10 2. The high voltage is transferred through a new rotor to the brass terminals of the distributor cap and out to the plugs. You will do away with the ECU control box, the ballast resistor, and those tangle of wires in the normal Mopar setup. me If the image above is not very clear, please click the picture you wish to increase the size of, then you will certainly be required to one more web page to present a clearer and larger image, you will certainly likewise exist info. With an older HEI, start your diagnostics. (A regular female spade lug is all it takes). Remove both the distributor cap and rotor, then turn the ignition ON but DO NOT START car. part number 6527-r complete distributor, with cap, 65k coil, machined aluminum body, steel shaft, gear, module, and pickup!. I assume there must be other replacements too. This arrangement makes a more reliable connection than the old-school distributor cap with female connectors. You can verify that yours is a RH by looking at the engine tag. GM's high energy ignition (HEI) distributor has been used as an affordable, easy to install performance distributor since its introduction in the mid 70s. Position the module in the distributor then locate the two screws and star washers to secure the module (Figure 1). The caps and rotors last 60K easily in stock applications and usually longer. Do that one tooth at a time until you reach the location you want the rotor to point to. com I thought , no way can this be that good. This Site Might Help You. Automotive ignition capacitors are still commonly called condensers. MSD's Blaster 2 Coil. HEI is a distributor cap style with a male post on top. The distributor is responsible for getting the electrical charges needed for combustion within the engine out to each of the cylinders. (if you are looking for the wires that you cut and crimp on the distributor ends, I do have them. An HEI ignition is actually an upgrade from a "standard" [points] ignition if that is what is meant. To do this I had to melt a tiny hole in the edge of both the dust cover and distributor cap. The Motorcraft ignition used on later 258s has a better reputation, but the computer controlled version seems to limit the top end you can get out of a 258. 10 Common HEI Myths. Accepts standard vials, test tubes, beakers and flasks. The HEI distributor has eliminated the need to do roadside tune ups to a point-style distributor. How to: Install a HEI Distributor I have heard horror stories about folks and even some of out members when it comes to install a HEI distributor. The less ohms, the less resistance!! MADE IN THE USA!!These wires will NOT work on a vehicle with a HEI (Male) distributor cap. Jumped down to 0 a lot. More on the sensor later. MSD Performance tells us that many of the ignition boxes in their arsenal can be triggered by way of a set of points or any number of OEM (and select aftermarket) electronic ignition systems. The ground side of the coil is connected to the breaker points. With an older HEI, start your diagnostics. We rigged a simple bench test to show how this idea works with a Ford distributor. Vehicle ignition systems have evolved significantly over the years to deliver improved, more reliable and more powerful performance. 93440806 Complete "ZZ4" style HEI distributor 12167658 Connector used to connect TACH and B+ to distributor. The below diagram shows a 20gauge ignition wire goes to the + post of the coil (which the HEI does away with) then to the "R" terminal on the starter solenoid. Note that these will require spark plug wires (or a replacement HEI style terminal and boot kit) that accepts the male terminals on the distributor cap end when switching from an application with the typical socket type. 488 cam 750 edelbrock intake, roller rockers. Inside this distributor is a spring loaded contact switch ("POINTS") riding on a revolving cam. If it does not have a distributor then the gear on the oil pump slides over the front of the crankshaft and turns when the crankshaft turns and that is what makes the oil pump work. Performance Distributors is leading the way in performance and racing ignition system innovation. The ignition coil, a vital component of any vehicle's ignition system, is responsible for providing electricity to the spark plugs. You will find that most first gens will allow a HEI to fit if A) the frame is in the factory aligned position and B) the intake is properly positioned so that the distributor fits perfectly in the machined socket in the block and is centered in the intake hole before the intake is torqued down. In most cases, you will want to use one that has both vacuum and centrifugal advance. I converted my distributor on my Chevelle from a point type distributor to an HEI distributor. 1 cylinder location and the rpm of the engine. If you do it right, you probably don't have anything to worry about, but I like a clean set up without splices and joints if possible. A machined Allen screw if half is ground off the top will work with a lock washer and thin nut will fit to limit the weights in the. When all of these parts are connected and working properly, we will get the spark the engine needs to run. I bought a fancy HEI clear, translucent distributor cap/rotor kit for my car and just thought now that I should've made sure I have an HEI system first…if I don't have an HEI distributor, is there a way I can modify my current setup and use this HEI cap/rotor kit that is on its way in the mail?. supervictor intake,. An HEI distributor is a great piece of equipment for an over-the-road car because it is completely self. It should have a number that starts with something like PXRD. A long with dozens of "Opinions" on the "Best" way to do it. These wires are already factory assembled for these engine sizes so you DO NOT cut and crimp on the distributor ends. The original one was driven from the distributor, which had a special geared assembly that attached to a speedometer-like cable. Bosch HEI: Distributor Interchangeability (Six Cylinder): Bosch HEI Distributors from 6 cyl VC, VH and WB's will fit any red/blue/black Six. Anyway, I'm back to trying to figure out what I did wrong with the internal mods for HEI tach signal from the 7 pin module. That's a fine tutorial on how to install a Mopar electronic ignition box, but a GM HEI module creates a hotter spark and doesn't use a ballast resistor. How does an Ignition Module Work? Ignition modules are solid state switching devices that typically use a component like a transistor to switch the current flow through the primary winding of an ignition coil on and off. In the HEI distributor, there are eight sets of teeth, all of which align with one other tooth simultaneously. The Autolite/Motorcraft distributor family consists of distributors with bronze bushings, with some having only one bushing and others having two. The only reason they work in a car's ignition system is that the breaker points (or electronic ignition module) constantly and rapidly makes and breaks the circuit creating a quasi-AC current. I run a Pertronix flamethrower HEI distributor and a stock GM tach w/o any issues. Turn distributor slowly until it one of the reluctors points is directly across from the pickup. What I found is the automotive distributors sell far below 100. You can do it with a stock HEI + hi-po coil but you'll likely have to close the gap way down (. Calibrated for high energy systems. Set the resistance range to the highest setting. Today, there are three primary ignition systems, and despite their differences in technology and components, they all work on the same basic principles. The 6 series ignition boxes are compatible with 4, 6, or 8-cylinder engines and are designed to work with points or electronic distributors. Davis Unified Ignition BTW. The second issue I am having is delivering 12V to the HEI distributor. fishy68,,, what HEI upgrades do you recommend, any particular coil work well with HEI? dgc333,,if I go with a Mopar system,, what are good coil options , with / with out a ballist resistor? motor is ( will be ) a warmed slant six, I have a slant electronic / vaccum distributor, to start with, but I am open to suggestions there to. If you do it right, you probably don't have anything to worry about, but I like a clean set up without splices and joints if possible. Comparing the HEI components to those in a conventional distributor makes it easier to understand and repair. Use connector wire P/N 8917052 to ignition. What is requires, simply, is to get the bottom of a 390 Distributor, and the top of an HEI unit, and join them together, so that everything clears any obstructions on top of the engine. HEI is a distributor cap style with a male post on top. These wires are already factory assembled for these engine sizes so you DO NOT cut and crimp on the distributor ends. Inside the distributor, a rotor spins in time with the car’s camshaft,. So I figure I would just get a whole new distributor. An HEI distributor is a great piece of equipment for an over-the-road car because it is completely self. Inside, the 4-Pin High Performance module (to ensure accurate and reliable timing to 7500 RPM) and, a 65K Volt coil work together to produce a powerful spark to light the fuel mixture for amazing performance. Sold as one kit. I converted my distributor on my Chevelle from a point type distributor to an HEI distributor. I'm trying to convert to an HEI distributor for the ol' 68 Chevy truck. We're talkin' 50,000 volts here, that would make short work of anything thats not up to the task. How to: Install a HEI Distributor I have heard horror stories about folks and even some of out members when it comes to install a HEI distributor. A basic Kettering Ignition Design. HIGH PERFORMANCE FORD 302, 5. It is supposed to have a one wire installation that replaces the existing distributor, coil, and resistor. Make sure the distributor cap screws fit on the body of distr (the spring clamps -4)---for HEI i believe there is a little notch where the cap will fit on the body of the distr. The Ionfire system does not collect data, does not have any rev controller element, does not adjust timing nor does it require any modification of the stock ignition coil, HEI distributor, rotary electronic or otherwise or any other component of a race car. An HEI ignition is actually an upgrade from a "standard" [points] ignition if that is what is meant. Call me if you need to know what I meen. The ignition coil, a vital component of any vehicle's ignition system, is responsible for providing electricity to the spark plugs. He said the GM mini HEI is designed to turn clockwise, and the 6-226 distributor turns counter clockwise, so it probably wont work. Below are a few of the leading illustrations we obtain from various sources, we really hope these pictures will work to you, and also hopefully very appropriate to exactly what you want concerning the Ford Hei Distributor Wiring Diagram is. When I flip the ignition switch ON the tach needle moves to the 0 PRM point which I presume is showing it has power, the light works, however I do not have the most important part the signal??? DEAD TACH!!! I connected the signal wire to the only treminal left on the HEI distributor cap, but I am not sure it the right treminal for this wire. Works like a charm, the HEI style. Attach spark plug wire to tester end. The other guy makes HEI stuff fit in an AMC distributor and uses a coil that is remote mounted. I would like to offer my help to those folks that may not understand capacitors also called condensors. Nothing more. New hei distributor has no spark will not start Dropped in this motor had it running for a bit then lost spark again. Hooking this filter device in series between your distributor and tach should allow your factory tach to work in harmony with your new electronic distributor. HEI however, does not work with the tri-power manifold. The Street EFI system works very much like swapping out to a newer carburetor in that it does not require any modifications to be made to the existing timing control. The stock module and coil are more than adequate and will work as well as any aftermarket units, provided the stock units are in good factory specified condition. It would be tough for me to do a complete rebuild on an original Delco or Prestolite distributor for 150 bucks that a new one that is fully electronic costs when the parts needed and the labor it takes to do a good job are added up. How Does The Honda Igniter (Ignition Control Module) Work? In a nutshell and when the Honda ignition system is working properly; when you turn the key to crank and start your Honda: 12 Volts flow into the distributor which are in turn distributed to the igniter (ignition control module) and the ignition coil. Comparing the HEI components to those in a conventional distributor makes it easier to understand and repair. This is not a common issue on the AMC inline 6 engines. an hei is big because of the coil in the cap, you can get an hei with a remote coil that is about the same size of a point style distributor. You may have to register before you can post: click the register link above to proceed. Once reasonably round, I made a somewhat thin brass bushing and pressed it over the eccentric area. HEI Distributor Installation. GM 4-Pin HEI Electronic Ignition Control Module Wiring Connections/Diagram with a Magnetic Pickup Coil. The only thing left for the operator might be to adjust the vacuum advance after some highway. The below diagram shows a 20gauge ignition wire goes to the + post of the coil (which the HEI does away with) then to the "R" terminal on the starter solenoid. I was able to get a signal from the tach out, but it was a poor one. From what I read, I would have to fab up a mount to keep it in place. Yes, the DUI Distributor is from Performance Distributors. This will work but what most people don't know is that the existing wire is usually a 20 AWG or an 18 AWG wire. On top of that, if the ignition switch is inadvertently left on and there is no distributor rotation, the HEI unit does not power the ignition coil. What cylinder is number 1,2,3 etc. Over the years, there have been several different configurations of HEI's. what is the difference between a mechanical and vacuum advance distributors? i dont know what distributor would work better for my chevy 383 stroker motor. GM offered these wtih 4-, 5-, and 7-pin modules. It seems to me that some how ignition module is not getting the signal from the distributor to ground out terminal C on the 4 pin module and cause the spark plug to spark. Jeep Tech Engines. Drill your holes and mount your ignition module down. Do-It-Yourself Hot Rod Builder Magazine. Bosch distributors are found on many different cars and are generally very reliable. There is plenty of seating and storage for a great day out on the water. Also, you may have to recurve the centrifugal advance in the new distributor to suit your engine. 00: We do not work on Chinese imported HEI distributors. The points would open and close to fire a single coil which would produce the spark for the spark plugs. Those pulses were, like in the GM HEI, generated by the ignition module from input of the pick up coil in the distributor. If the distributor cap is faulty then the ignition sequence inside your engine will be out of order. One of the technologies that enables this long maintenance interval is the distributorless ignition. It has a capacity for 16 persons. HEI however, does not work with the tri-power manifold. Easy to return to stock at a later date if you want to. The only way to be sure what your distributor is doing is to check the advance curve on a distributor machine but since so few of us have them available, that is not always an immediate option. what is the difference between a mechanical and vacuum advance distributors? i dont know what distributor would work better for my chevy 383 stroker motor. You'll want to add a relay thrown by the ignition switch to power the ignition system from a fused line right to battery or the fuse panel with a good new 14ga wire or better, I'd use 12g for the feeder to the relay from the battery or panel. You also need to check the points of contact. It should have a number that starts with something like PXRD. Trucks Gone Wild Classifieds, Event Information and Mud News. An HEI ignition is actually an upgrade from a "standard" [points] ignition if that is what is meant. I was able to get a signal from the tach out, but it was a poor one. I used it on a low CR lump of an engine and it started fine. They supply a current controlled 12 volts for the sensor (located inside the distributor) and receive a series of 5 volt pulses back from the sensor. Danchuk Manufacturing, Inc. GM offered these wtih 4-, 5-, and 7-pin modules. The distributor cap and rotor won't wear any faster than they do on a system designed for a small gap. this is what worked best for me becuase of my situation. Ignition 2, GM HEI Distributor Notes. As always, I’m going to include the disclaimer that many of these are my own comments and opinions based on my personal tuning experience. The solution is to limit the vacuum advance so it maxes out at a lower vacuum than what the motor pulls at idle. Cap and rotor. me If the image above is not very clear, please click the picture you wish to increase the size of, then you will certainly be required to one more web page to present a clearer and larger image, you will certainly likewise exist info. I assume there must be other replacements too. Something like a GM HEI, a Pertronix Ignitor electronic, a Mallory 9000, a Hall effect distributor and many others can be used in conjunction with the 6AL-2. HEI Ignition swap on Pontiac/GMC. Now, I run a locked out total timing of 36* and pull the rest out with the box. MSD Performance tells us that many of the ignition boxes in their arsenal can be triggered by way of a set of points or any number of OEM (and select aftermarket) electronic ignition systems. A bypass wire was also used to supply the distributor with a full 12 volts at startup. 3 volts to the coil. For additional Tutorials visit our Website: http://www. wiring hei distributor on 1957 chevy belair I have a 1957 chevy belair that I am putting back together. Most ignition switches will have the “ignition” terminal of the ignition switch active (live) with the ignition switched “ON” and also when switched to “START,” but not all switches provide this function. Have you looked online for Pertronix D9007 Flame-Throwe r4-Pin Wire Harness/Capacitor for HEI Distributor? That is not the old-fashioned way to do it, but you can often find a better price. NOTE: Make sure your tachometer has a common ground with the signal source (ECU). This distributor is required on all crate engines and roller camshafts that are made of steel. Aftermarket coils can be used, and any ballast can be eliminated, as long as the coil's primary-side resistance is not less than 2. As part of the ignition distributor, they allow each spark to be "distributed" from the ignition coil to the ignition wires and then to each spark plug. Sure you could try to modify a GM HEI 6-cylinder distributor to run on the odd-fire, but HEI has its own issues. Will NOT work with battery-powered ignition systems. The Ford & MoPar modules were mounted on the inner fenders & were much more reliable. I was low on cash and could not figure out what was wrong with my HEI DISTRIBUTER in my 1968 Camaro. I have a HEI ignition and switching to an MSD dizzy and 6AL msd box. Lower the HEI until the gear starts to mesh. Jumped down to 0 a lot. I recently pulled the old distributor out and have replaced it with an HEI distributor. me If the image above is not very clear, please click the picture you wish to increase the size of, then you will certainly be required to one more web page to present a clearer and larger image, you will certainly likewise exist info. Every time I connect the Tach. Welcome to the North American Subaru Impreza Owners Club : Saturday November 2, 2019. 0 with 1 Comment: A couple of years ago I built a 402 BBC and bought a ProComp HEI distributor with external coil. not that that maters but just in case it does i posted it anyways. The only thing left for the operator might be to adjust the vacuum advance after some highway. And while you are there, get the HEI "Batt" wire--you'll have a factory plug for the HEI then. Socket connectors are for a female distributor cap (points style cap)and use brass terminals that insert into the cap. Since this system produces more voltage and amperage output, it demanded a larger-diameter cap to prevent voltage crossfire inside the distributor cap. Here is a picture of it mounted to supplement Dan's writeup. How a coil works. You can then trigger a HEI module with the trigger in the Chrysler unit or run a straight Chrysler electronic ignition. I'm trying to convert to an HEI distributor for the ol' 68 Chevy truck. The distributor also disburses current. You really need to check out the original article. The HEI distributor has eliminated the need to do roadside tune ups to a point-style distributor. In the course of our T-Bird restoration we converted the cable-driven, 50 year-old tachometer, to a new electronic unit. RE: Can u run a MSD 6al box with stock hei distributor? I have a 1968 Oldsmobile 400 big block rebuilt bore. (A regular female spade lug is all it takes). I consider: MSD, Pertronix, and HEI. The bushing deformed to some extent,. I believe the first Square Body came with HEI Distributors so they all have them. The ground side of the coil is connected to the breaker points. It seems to me that some how ignition module is not getting the signal from the distributor to ground out terminal C on the 4 pin module and cause the spark plug to spark. From what I read, I would have to fab up a mount to keep it in place. part number 6527-r complete distributor, with cap, 65k coil, machined aluminum body, steel shaft, gear, module, and pickup!. Wire Kit does not utilize an external coil wire. Distributor- Part # 93440806 GM HEI Large Cap style with internal Ignition Coil. You can do it with a stock HEI + hi-po coil but you'll likely have to close the gap way down (. I used the DUI one. The distributor cap doesn't sound like such an important part, but it is integral to the performance of your car's engine. 00 as for the marine version more like 300-400. Before the original distributor is removed, several settings should be noted: Base timing should be checked, and noted. Included Items: 1 x New Ignition Distributor; Work with Groupon. As part of the ignition distributor, they allow each spark to be "distributed" from the ignition coil to the ignition wires and then to each spark plug. HEI stands for “High Energy Ignition” or, Electronic Ignition. 5L engine, but they have a product that works. i will have one but you know how on the HEI distributor theres 2 wires that need to be connected, says on the cap is the 12v and tach, i cant seem to find the research on where i need to hook it upany ideas on where i connect it. Just use the HEI as it is and hook the tach (blue) wire to the HEI. Tape up and secure remaining wires. The stock module and coil are more than adequate and will work as well as any aftermarket units, provided the stock units are in good factory specified condition. The HEI distributor has eliminated the need to do roadside tune ups to a point-style distributor. We negotiate with retailers on your behalf to save you money. I am not racing the car so I don't need the very top item. If, for some reason you have no spark coming from your distributor, the following will help you check and test the installation, connections, and components, of the unit so that you can get your engine running. Most older models of vehicles contain a mechanical distributor, while more recent models almost always have. Symptoms of a Bad Ignition Coil. Effectively making the interrupter switch a cutoff for the distributor. It is a simple design using a magnetic trigger, electronic controller inside the cap, and a coil. The Ford & MoPar modules were mounted on the inner fenders & were much more reliable. All Acronyms This work by All. The below diagram shows a 20gauge ignition wire goes to the + post of the coil (which the HEI does away with) then to the "R" terminal on the starter solenoid. It has a capacity for 16 persons. I started with a mini distributor from a 1980 S-10 2. In addition to melting/cutting a small space for the wires to feed through, you need to cut off the two small tabs on the dust cover that separated the. So, I can dial in an ignition curve based on boost. Reinstall the rotor and cap. I purchased a Procomp Electronics 6001D HEI to replace the Accel 41000. First step was to remove the point cam and grind/file it down as round as possible. I currently have a 383 stroker, dart 2. MY electronic theory does not support the idea of the capacitor being there to form an oscillator circuit. Start boost comes from a couple resistors that amplify the inductive pickup signal when the start button is pressed. The cap and rotor will fit our HEI Pro-Billet distributor, PN 8365, plus will work on stock applications. Easy Fix Hurky-Jerky Throttles for Less than $5. Anybody installed an MSD 8239 Ignition coil on their Subie? Legacy Forum. Since the early 1990's, many automakers have moved to using ignition systems without distributors. The new HEI needs a minimum amount of voltage to function at its best. 5L engine, but they have a product that works. a red pump back by your tank, and taking your in tank pump out and put a peice of metal line in place of it will work just fine if u dont want to go through all i have had to. here is the info that i got for the conversion. The distributor has a 2-pin connector that plugs directly into an MSD Ignition. The kill switch kit will include: 1 mini-toggle switch, wire, and 10 minute installation instructions. An HEI distributor is a great piece of equipment for an over-the-road car because it is completely self. Nothing less. Part Number 63720-EXT has an extended shaft to allow the distributor to clear the intake and head on 67-71 225 CI Jeepster Commando engines. If you put HEI in an older vehicle with the points distributor remove the hot wire to the coil, it’s a resister wire. How a coil works. I downloaded info on MSD 85551 distributor (some of you may recall that I have had distributor advance problems) which can be locked out but my unsolved query is How do you set the total timing when the distributor is locked out - do you use (at least what was taught to me) the method of bringing it up to 3000 rpm and spot the timing light. As you might guess, the placement can change based on the type of vehicle, so it is important to have the correct diagram or you will be practically going in blind. HEI/ESC Electronic Spark Control used a knock sensor and an electronic controller. We offer a one-year warranty on this A-Team Performance Spark Plug Wire Set. 99 1PCS R77120 Long Axis Motor DC12V 2500rpm Large Power For Fertilizer Distributor. How an HEI distributor works in laymans termshow an automotive ignition system works. If engines are assembled not using this gear, it may affect your engine warranty. The document has moved here. It happened to me. 3 volts to the coil. 0l hei complete distributor long shaft # 6502-5-black 1PCS R77120 Long: $44. Some MSD distributors have built in modules or behave like various factory distributors; these include the Ready To Run series, the Optispark replacement, E-Curve, and HEI distributors; this article does not cover MSD distributors with anything more than the basic two wire pick up. First off, start by removing the toyota ignition and coil, it is one unit on the toyota. In this Throwback Thursday, we’re taking a small jump back to December 2017. I replaced my cap, rotor,coil and even the module, but it would work and then it would run ruff and die. Disconnect the vehicle wiring harness, and distributor wiring harness from the distributor cap. Inventions Begin. Disconnect the ignition coil's high tension wire from the distributor cap only but leave the other end connected to the ignition coil's tower. Crossfire Distributor Caps are a simple, effective solution for the tangled mess created where the ignition wires are connected to the distributor. The kill switch kit will include: 1 mini-toggle switch, wire, and 10 minute installation instructions. What I found is the automotive distributors sell far below 100. You have to supply him a certain kind of distributor and he does the conversion for $175. having a couple hei distributors lying around for the 300/240 i wanted to put one on my 95 w/efi yet realized that it may not work due to the cam position center integrated into the distributor and the hei distributors i have, have the 4 pin module could i upgrade to a 7 pin module and adapt to the computer controlled timing and signals. 00 some as low as 40. It's held in with two 10 mm head bolts. What is an MSD ignition, and how does it work? My buddy got one hooked up to his car, but I'm not clear on what it does and how it benefits you. Well he was taking it on his longest trip to date with this combination and he lost ignition after getting gas 1 1/2 hours into a 2 1/2 hour trip to a car show. When I looked at this thing on Amazon. You do not have to connect anything to the TACH position, but if you want a tach, most semi-modern tachs (like my Sun Super Tach III) work just fine when connected to the TACH output. 1974 and later GM vehicles can use the existing hot wire with the DUI as they were originally set up for HEI distributors. If you have a vacuum advance, ensure that doesn't hit the firewall when adjusting the timing. The Ionfire system does not collect data, does not have any rev controller element, does not adjust timing nor does it require any modification of the stock ignition coil, HEI distributor, rotary electronic or otherwise or any other component of a race car. If you put HEI in an older vehicle with the points distributor remove the hot wire to the coil, it’s a resister wire. As always, I'm going to include the disclaimer that many of these are my own comments and opinions based on my personal tuning experience. KD 2757 Standard Ignition Tester is calibrated for Standard Ignition Systems, while KD 2756 HEI Igntion Tester is but he can't say 100% it would work for the. It wouldn't do you any good to have one that is set up for computer advance control if you don't have a computer!. It has integrated coil, eight teeth pickup module with no missing teeth and an ignition module. Camaro Forums at Z28. The High Energy Ignition (HEI) used on most General Motors products prior to the use of fuel injection was a hall effect type of distributor. Some of the images in this article show them off of the vehicle just to make it easier to explain their testing process. An HEI ignition is actually an upgrade from a "standard" [points] ignition if that is what is meant. The HEI is a unitized distributor with magnetic reluctors to trigger its internal control module and an ignition coil built into the large-diameter cap. Yes, the DUI Distributor is from Performance Distributors. The stock module and coil are more than adequate and will work as well as any aftermarket units, provided the stock units are in good factory specified condition. Remove the distributor cap, leaving the spark plug wires attached. Just to shed some light on the mechanicals it's a Durspark to HEI swap by means of chucking the Duraspark box and wiring a HEI module in it's place. I have two motors, built identical, with the same carbs on them and I can assure you the one with the GM hei runs smoother and jus overall performs better than the other. The guy at the bone yard refused to sell me one that fits a 250 L6 because he says that the parts numbers are different. 10 Common HEI Myths. The factory uses a 12 AWG wire all the way from the ignition switch to the distributor. I consider: MSD, Pertronix, and HEI. I am building up a 302 with mild cam and am trying to chose an ignition/distributor system. I have a few questions. The ignition module can be thought of as the contacts of the breaker points, while the pick-up coil and reluctor (the tooth wheel on the distributor shaft) serves the same function as the distributor cam and rubbing block. 035) to make it work well. The new HEI needs a minimum amount of voltage to function at its best. This electronic ignition system operates with full 12 volts. Camaro Forums at Z28. This positive feedback loop can work the other way as well; rpm goes up, vacuum goes up, advance goes up, rpm goes up more, etc and you are left with a racing idle. No - a tach adapter isn't required as long as you already had a tach in the car. Whether you want to just heat and stir, or perform more complex parallel experiments, StarFish really can make your life easier and improve productivity. It may be too small or a resisted wire thus reducing the voltage. How Does The Chevy HEI Distributor Kit By Summit Perform Wondering how well the 1983 Chevy HEI Distributor kit by Summit performs. Something like a GM HEI, a Pertronix Ignitor electronic, a Mallory 9000, a Hall effect distributor and many others can be used in conjunction with the 6AL-2. If your vehicle falls between these years, verify this is the type of ignition system in your vehicle. The original one was driven from the distributor, which had a special geared assembly that attached to a speedometer-like cable. Great for water skiing and any other water sport. Wherever the rotor lands is the number one position. Some MSD distributors have built in modules or behave like various factory distributors; these include the Ready To Run series, the Optispark replacement, E-Curve, and HEI distributors; this article does not cover MSD distributors with anything more than the basic two wire pick up. What I found is the automotive distributors sell far below 100. Please include at least one social/website link containing a recent photo of the actor. I've read, from peope who have done the coversion, that they use an HEI distributor from a Chev 250 6 cylinder engine. I've also not seen a Mopar distributor burn through a cap, but that's mostly because it can't. Original equipment manufacturers work with distributors to take their products to market. GM's high energy ignition (HEI) distributor has been used as an affordable, easy to install performance distributor since its introduction in the mid 70s. First you need to determin the polarity of the wires going to the distributors pickup. A chain, belt, or gear from the engine drives a "DISTRIBUTOR". To run on a constant 12-14 volts, you do need a "hotter" coil. For blown or nitroused applications I always recommend an MSD ignition amplifier box setup. Not only that, the ignition coil runs cooler at low RPMs in the HEI system compared to a conventional system due to the reduced dwell time in current limit mode. It also uses two GM HEI igniter modules. Great for water skiing and any other water sport. com I thought , no way can this be that good. Start boost comes from a couple resistors that amplify the inductive pickup signal when the start button is pressed. howstuffinmycarworks. Crossfire Distributor Caps are a simple, effective solution for the tangled mess created where the ignition wires are connected to the distributor. I have two motors, built identical, with the same carbs on them and I can assure you the one with the GM hei runs smoother and jus overall performs better than the other. Effectively making the interrupter switch a cutoff for the distributor. Bill Jones says it reduces coil output 80% though, and it will make the module run hot if used long term.