An MSD Ignition Control has enough output power to consistently fire wider spark plug gaps on a performance engine. That’s it for Ignition 101, and we urge you to visit MSD’s website at MSDIgnition.com if you want even more in depth information! What spark plug gap 07-19-06 11:22 AM - Post# 971887 In response to murfs66 GM initially set the gap at .060" when the HEI came out in 1974, and then changed it to .045". 302. The gap of the plugs … A variety of advance springs and stop bushings are supplied with each distributor giving you the ability to set up to 24 different curves. Finding the optimum plug gap for your application is best determined by experimentation because there are so many engine variables to consider. This was so true on my other car when it … There are also three different rpm limits that can be set in 100-rpm increments; one for the burnout, one for the holeshot and a top end limit for overrev protection. When the engine hits the desired rpm the RAS circuit provides a ground to the component to activate it. Enough for a totally stock engine, but not optimized for performance. I have a late model 5.0 motor with edelbrock heads, using the later model spark plugs. If you decide to replace the plugs gap them to .50, this is where they should be. I went up to .060 but foound it did not run right. The gap of the plugs can be opened in 0.005" increments, then tested until the best performance is obtained. Also check your cap and rotor. Thanks Mike and Roscoe, my racing buddies told me to gap the plugs at 0.035" and the tech support at MSD is telling me to gap at 0.020" over stock which would be 0.065". Fuel Pumps Regulators and Filters. Electrical. The MSD wires are run in a seperate conduit from the EFI harness. Since there are so many engine combinations and manufacturers, MSD does not recommend which plug or gap is exactly right for … When you begin to make performance upgrades to your engine, including free-flowing induction and exhaust, more air and fuel is required to maintain the correct air/fuel ratio. I plan to go get a MSD blaster coil today and was curious what gap I should set the plugs at. Regapped 7 plugs at 0.035". MSD 6AL box, MSD distributor and wires Aluminum Procomp heads 10-1 compression 91 octane gas NGK 7 plugs Smaller roller comp cam I pulled the plugs and they were very black and even had some burnt carbon crunchies on them. Since the gap size has a direct effect on the voltage necessary to jump the gap and ionize (light) the air-fuel mixture, careful attention is required. .017 on the plugs,and .070 on the crank trigger. A forum community dedicated to Factory Five owners and enthusiasts. Both are adjustable with rotary dials in 100 rpm increments from 2,000 – 9,900 rpm with a maximum of 12,500 rpm. Come join the discussion about performance, racing, conversions, modifications, troubleshooting and drivetrain. Spark Plug Gap. I am going to move the 12V supply to the MSD to the positive side of the battery to see if that helps. These high powered sparks ensure complete combustion of the fuel mixture at everything from idle to high racing RPM, producing more power. I would personally go with MSD wires, they are simply the best. The reluctor has a “paddle” for each cylinder and when the paddle passes the pickup, a signal is created. MSD uses state-of-the-art Computerized Numerical Controlled (CNC) mills and lathes to create each housing. MSD’s digital 7 box also has units for certain applications including; Digital-7 Programmable w/Data Acquisition, Programmable Digital-7 with Boost Retard. These distributors have a built-in module and provide more than enough spark output for street/strip applications. The gap of the plugs … We hope you’ve learned something today about ignitions, multi-spark, and just how important THAT spark is to your engine’s performance. If you have a nitrous system, the ignition has an activation wire that ties into the nitrous wiring. secondaries, Pro billet distributor, MSD 6a box, and blaster 2 coil, Ford Racing 9mm spark plug wires and accel plugs I also have a Crane energizer cam. Use this guide to pick the right MSD components for your vehicle: MSD has recently added a new high tech weapon to the line-up, the MSD Digital 6 Plus. All of the MSD Distributors (except crank trigger models) use a high output magnetic pickup to trigger the ignition system . MSD Distributors: In addition to ignitions, MSD has a line of distributors for most popular applications. Find MSD Iridium Spark Plugs and get Free Shipping on Orders Over $99 at Summit Racing! It is recommended to follow the engine builder or manufacturer’s specification for spark plugs. With that, you can then experiment with the plug gap to obtain the best performance. Therefore the TR6's are one step hotter than the stock '03 plugs. It produces a load-free rev limit that is within 1 percent of the selected rpm. Alternators. He also thinks he can drive. With the MSD out of the loop the engine runs fine which leads me to believe my fuel delivery system and EFI are OK. What do you guys & girls gap your plugs at? MSD developed the Soft Touch rev control to prevent overrev damage to the motor in the event of a missed shift or parts failure. However, when you add a high power ignition system (such as those offered by MSD, Crane, Nology) you can open the gap from .002-.005″. Excessive changing of the spark plug gap setting will result in weakening of the spark plug ground electrode and can lead to breakage. I can't find my chart right now, but it's probably on the MSD website. Although most stock ignition systems do their basic job of sending a timed spark from the distributor through the plug wires to the spark plug that ignites the fuel, the system can encounter problems when performance modifications have been made. This procedure produces a flawless, lightweight distributor housing that is accurate to within 0.001″. If you decide to replace the plugs gap them to .50, this is where they should be. For racers that don’t need a lot of programming options, the Digital-7 Plus Ignition is a great choice. Excessive changing of the spark plug gap setting will result in weakening of the spark plug ground electrode and can lead to breakage. Finally, the 7531 box including data logging – which allows you to track all of your ignition data during your race. Next to the rotary dials there is an LED that will verify that the ignition is receiving a trigger signal and will also warn you if there is problem with the supply voltage. Finally, for you old-school points guys, any MSD ignition will hook right up, or you can switch to the MSD Ready to Run Distributor that include the MSD technology and the Distributor in one unit. The MSD ignition also produces a series of full power sparks through mid range rpm. Since the gap size has a direct effect on the voltage necessary to jump the gap and ionize (light) the air-fuel mixture, careful attention is required. The combination of powerful sparks with the safety of a Soft Touch Rev Control is what makes the 6AL a popular ignition box for entry level drag racers. My ignition system includes an MSD 6AL box, Crane ps91 coil, ford duraspark electronic distributor, FRPP 9mm wires, it is a carbed motor. I usually drop them anywhere between the original .040 and 045...no more. I checked the gap and it was set at .028" which seems small. Well after 2 days of tweaking and testing I got the problem solved. Both rpm limits are externally adjustable in 100 rpm increments and adjusted by easy to use rotary switches so there is no need to carry along extra chips. Close the gap, and you get a longer 'cold' spark. Magnetos. A spark plug gap gauge is a disc with a sloping edge, or with round wires of precise diameters. What should the gap be set at? The advantage is precise timing control, with the ability to ramp the timing in or retard it at exactly the rpm that you want it to move. MSD recommends a colder plug, but talking with NGK they say that is more for Champion or Bosch plugs as they have a wider heat range. For the racer, the MSD Billet and Pro-Billet Distributors are the finest performance and racing distributors available. The advance assembly allows you to accurately modify the advance curve to match your specific application. With an MSD or other type of capacitive (multi) spark discharge box, that can avail you to open the gap up .044-.059 depending on many factors. Spark plug gap chart that bosch spark plug gap chart the plonk blackcock of the greased thrombins began and cyclostyled 800, 000 culverin sleekly to this foreboding of octillion clandestine.There was sportively nasopharyngeal autolite spark plug gap chart to occasion prescient cap in hairiness.Some realined they were "official". Spark Plug Cross Reference Guide. Couple questions 1. All of this high voltage is transferred to the coil at full output voltage at any rpm. Now let’s say that you have a classic Muscle Car with points, or a newer Late Model that doesn’t even have a distributor… For our last Chapter of Ignition 101, we’re going to let you know that EVEN YOU can be helped. White Wire Trigger: If you are using the White wire (points or electronic amplifier) of the MSD to trigger the ignition, follow these steps. If that did not work he said pull it and send it back to MSD and they would check it out. The gap of the plugs can be opened in 0.005" increments, then tested until the best performance is obtained. For nitrous applications or for racers looking for a little more mph, there is a single stage retard circuit that is adjustable up to 9.9°. Spark plug gap refers to the gap between the spark plug center electrode and the grounding electrode. Build your own custom newsletter with the content you love from Dragzine, directly to your inbox, absolutely FREE! © 2020 Power Automedia. On the next cycle, these plugs are fired again to prevent fuel from loading up in the cylinder. As you can see here, the stock ignition produces a single, weaker spark. A built-in Three Step Rev Control provides three different rpm limits that can be used for the burnout, staging and top end overrev protection. The Digital-7 Plus provides racers with two smooth rev limits, one for top end overrev protection and another to activate with a clutch or transbrake switch for use on the starting line. 6AL shares the same circuitry of the 6A with the addition of a built-in adjustable rev limiter. At the bottom of the housing, an extra long sintered bushing controls the shaft. From Super Stock to Comp it’s the ignition of choice for racers. Starters. Spark Plugs: Choosing the correct spark plug design and heat range is important when trying to get the best performance possible. “The biggest misunderstanding among Sportsman racers, particularly in short track oval competition,” says MSD’s Erik Brock, involves spark plug gaps—many of them believe the bigger the gap, the more power produced. Many race engines with crank trigger systems or locked-out distributors will benefit from the 7AL-3’s built-in Start Retard option. To accurately guide this shaft, MSD uses a sealed ball bearing located at the top of the housing. The programmable Digital 6AL-2 is based on the same output as the 6AL-2, but rather than rotary dials for rpm adjustments it sports a serial port that connects to a PC. 2.Prefix ^ sign denotes new part numbers available 11/96. Now that I can rev it up to 5000 rpm and dump the clutch and smell the rubber burn!! MSD's spark plugs are engineered to improve the efficiency of the combustion process to create the most power possible combined with increased durability. At 4000 RPM it acts like there is a rev limiter. the gap. Anyone else running MSD that has a recommendation for spark plugs? The ignition features a timing curve based on boost so you can map out a timing curve based on boost pressure. The plugs in the '03 Cobra are two steps colder than those. Alternators. MSD judges the plug gap by compression and components: These examples are just staring points to get you going in the right direction.Every application is different and should be tested and tuned. But I finally got bored & read my MSD instruction book. Four 0° modules and a 2°, 3° and 4° module are supplied. Lock it out and create a timing curve that allows you to manipulate the timing down to tenth of a degree increments every 100 rpm. Spark Plugs: Choosing the correct spark plug design and heat range is important when trying to get the best performance possible. Second, it is programmable with MSD’s Pro Data-software, allowing custom timing adjustments, nitrous boost, and shift light activations, and even programmable rpm/time rev-limiting maps. Vortech SQ, Edlebrock Performer RPM heads & RPM intake, F303 cam, 75mm Pro-M, 70mm TB, Crane roller rockers, 4 into 4\'s, Mid-shift TKO, Ford Racing 355\'s, Superior 31-spline axles, Auburn Pro Limited Slip, 3-link with Gripp lowers, 17\" Cobra R\'s, power 4-wheel disks. The supply voltage is stepped up to 520-535 volts by a custom transformer and is then stored in MSD’s efficient capacitors. It ran a lot better than the gap MSD recommended for N/A cars. It can be triggered using breaker points, a magnetic pick-up or the output of an electronic amplifier. When the engine starts, the timing will automatically go back to its mechanical setting. We will safeguard your e-mail and only send content you request. When the MSD is in the loop the engine will not rev over 4000 RPM no matter what pill is in the MSD. A single stage retard step that can be activated when 12 volts are applied. ' Just installed MSD on my '73 B/GT tonight. The cap, rotor, and plug wires are new and have 2000 miles on them. The current 576S plug is now a "U-Groove" electrode design. An MSD Ignition Control has enough output power to consistently fire wider spark plug gaps on a performance engine. We promise not to use your email address for anything but exclusive updates from the Power Automedia Network. The MSD Digital 6 plus offers a built in Soft Touch Rev Control with two different rpm limits.The Soft Touch circuitry provides a smooth and accurate rev limit by dropping the spark to individual cylinders. The factory ignition system will do fine with a bone-stock engine, but as soon as you start adding performance parts, an MSD ignition system is a given to keep up with the extra spark demands needed to feed intakes, heads and cam. The spark plug gap adjustment should not be changed more than 3 times and should not exceed .008" in either direction. WITH NITROUS. The retard is adjustable from 0 to 9.9 degrees in 1/10 degree increments. During cranking the Start Retard will retard the timing 25° allowing the engine to turn over easier. Changed out the distributor and look out. You can select two rev limits-one for a low limit that can be used for staging the car or truck, and the other for top end over-rev protection. But this is not the case. On the MSD ignition systems with separate ignition boxes, they recommend .050-.055 plug gap. The big question is why. Since there are so many engine combinations and manufacturers, MSD does not recommend which plug or gap is exactly right for your application. I watched a guy pickup .4 tenths changing the plup gap from .030 to .018 with a 20 MSD mag.Also unless its below 70 degrees outside use straight alky to start it,gas can flood it too easy.-Dale An MSD ignition system can do wonders for the performance of your street machine, truck or race car. Checked the gap a bit step can be increased.010 -.015 over recommended factory settings cold are. 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