I was running NGK Iridium plugs (Part # WR5IX) before. The Digital-7 Plus incorporates proficient EMI filter components to keep inputs and signals free from electrical interference. A spark plug gap gauge is a disc with a sloping edge, or with round wires of precise diameters. The TR6's are one step colder than the stock plugs that came in the '01 Cobra/GT. We will safeguard your e-mail and only send content you request. Easier starting, improved throttle response, reduced plug fouling, more power and increased fuel economy are all benefits from the 6A’s high energy multiple spark strikes. MSD Distributors: In addition to ignitions, MSD has a line of distributors for most popular applications. The MSD ignition also produces a series of full power sparks through mid range rpm. The gap of the plugs can be opened in 0.005" increments, then tested until the best performance is obtained. That will allow it to support engines even up to 2,000 horsepower. But I finally got bored & read my MSD instruction book. 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. Unlike the stock-type inductive ignition systems, MSD ignitions incorporate capacitive discharge technology. 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 this high voltage is transferred to the coil at full output voltage at any rpm. 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. Their Ready to Run, HEI and E-Curve distributors are great for street applications. WITH NITROUS. If you decide to replace the plugs gap them to .50, this is where they should be. The 7AL-2 has been a staple in the drag race community for years. Finding the optimum plug gap for your application is best determined by experimentation because there are so many engine variables to consider. As for gap with the MSD 6AL, I think they used to say that you could run gaps to .060", but others noted that when you got past .045", there was no power to be gained. That was because the plug gaps would open with use and plugs started fouling. The simplest gauges are a collection of keys of various thicknesses which match the desired gaps. The feature that most boosted drivers will enoy is the ability to pull timing out during the holeshot – and ramp it back in during the run. Jim We went with the distributor first because I had one laying around and it is easy to change. That’s easy to see in the video. Spark Plug Gap. Changed out the distributor and look out. When I read the MSD manual I started widening my .040 gap on my 351W plugs. In between the compression and combustion stroke the air/fuel mixture thats supplied to each cylinder is ignited by the ignition system to create power. 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. The gap of the plugs … If you plan to go the nitrous or boosted route, the digital versions of MSD’s 6 or 7 series boxes are part of a tunable package. I can't find my chart right now, but it's probably on the MSD website. All rights reserved. the gap. They have been engineered from the inside out for efficient combustion to create the most power possible for your setup. Spark Plug Cross Reference Guide. If the porcelain is white, open the gap by .005 to .050 to cool the operating temperature of the plug… At the wider gaps, plug wire condition became more critical (as to voltage leakage from the wires, seeking an easier ground path rather than through the spark plugs). The ignition features a timing curve based on boost so you can map out a timing curve based on boost pressure. 302. Every feature is designed to provide the best in performance and endurance to top off your ignition system. This ignition works on modified street machines, trucks or street rods. Personally, on gas I run an NGK cold v-type plug at 0.9 with MSD and a bosch coil (the little black transformer type). At the bottom of the housing, an extra long sintered bushing controls the shaft. The high speed controller can make extremely quick compensations to the output voltage, multiple spark series, timing and rpm limits while maintaining accurate timing signals to within 1 degree and 1 percent of the rpm limits. 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". The spark plug also has a steel jacket, which allows the threaded end of the plug to be torqued into the cylinder head. Build your own custom newsletter with the content you love from Dragzine, directly to your inbox, absolutely FREE! They recommend about .045 - .050 plug gap. This procedure produces a flawless, lightweight distributor housing that is accurate to within 0.001″. It is recommended to follow the engine builder or manufacturer’s specification for spark plugs. We already took you on a complete tour of M-S-D ignition last year, showing you how they design, engineer, and manufacturer the most cutting edge ignition systems in the world. The advance assembly allows you to accurately modify the advance curve to match your specific application. An MSD Ignition Control has enough output power to consistently fire wider spark plug gaps on a performance engine. In my experience, the narrower the plug gap - the smoother the idle can be, but this will take away from power at upper rpms. For example, MSD’s 6AL-2. It also features a popular two-step rev control for staging and over rev protection. Vibration mounts, wires and detailed instructions are supplied. Just one thought Jimmy, don't run ANY MSD wires in the same wire loom as the EFI harness. Finding the optimum plug gap for your application is best determined by experimentation because there are so many engine variables to consider. If you gap them at .054" you will most likely get spark … That being said, once a proper plug is selected, you can experiment with the gap … Enough for a totally stock engine, but not optimized for performance. Come join the discussion about performance, racing, conversions, modifications, troubleshooting and drivetrain. © 2017 Power Automedia. 2.Prefix ^ sign denotes new part numbers available 11/96. 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″. Also, the spark plug gap should never exceed .055" unless pre-set by the manufacturer. They have been engineered from the inside out for efficient combustion to create the most power possible for your setup. Regapped 7 plugs at 0.035". Like all of the MSD 6 Series Ignitions, the 6A will work with virtually any vehicle as long as it has a 12-18 volt electrical system. 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! MSD’s digital operation uses a high speed RISC microcontroller to control the ignitions output while constantly analyzing the various inputs such as supply voltage, trigger signals and rpm. It produces a load-free rev limit that is within 1 percent of the selected rpm. Iridium Spark Plugs. Like the multiple spark, CD ignition, MSD was the first to introduce a distributor housing machined from a billet of aluminum. The tip continues down as the center electrode through an insulated core composed of a ceramic housing, usually made of porcelain. Electrical. We all know the basics of how an engine works. MSD was the first company to develop and offer the multiple sparking, capacitive discharge ignition for engines. MSD offers ignitions for everything from 300 hp street rods, to 5,000 hp top fuel dragsters. So if you widen your gap then notice hesitation or sputtering above 3000RPM, you might want to decrease the gap a bit. All rights reserved. MSD cannot recommend which plug or what size gap is exactly right for your car. ' Just installed MSD on my '73 B/GT tonight. On a different supercharged car I owned with MSD, I gapped the plugs to 0.025". Once you load MSD’s Windows based software on your PC, you’re ready to start mapping and programming. During cranking the Start Retard will retard the timing 25° allowing the engine to turn over easier. The gap makes a difference (in theory.....). The big question is why. An MSD Ignition Control has enough output power to consistently fire wider spark plug gaps on a performance engine. Spark Plugs: Choosing the correct spark plug design and heat range is important when trying to get the best performance possible. Well after 2 days of tweaking and testing I got the problem solved. These hot spark plugs are designed to reduce heat transfer and keep the tip of the spark plug insulated. These distributors have a built-in module and provide more than enough spark output for street/strip applications. If the plugs look black, close the gap by .005 to .040. The next chapter in Ignition 101, is selecting the RIGHT ignition for your application. (.040 gap out of the package) I bought mine over a year ago. I do remember that with 9-10:1 compression, they suggested a base gap of .045 and increasing from there. The MSD wires are run in a seperate conduit from the EFI harness. For the racer, the MSD Billet and Pro-Billet Distributors are the finest performance and racing distributors available. MSD Cross Reference with NGK® Stock Number to Plug Type. The retard will remain until the 12 volts are removed. of the spark plug boots, MSD offers Pro-Heat Boot Guard, PN 3412. Also played with the timing and put the MSD back in the loop. Yes I did. Make sure the ignition switch is in the Off position. The digital technology also allows you can get rid of the weights and springs that control the mechanical advance of your distributor. Couple questions 1. I just installed the MSD 8595 distributor, 6AL-2 Ignition and the Blaster 2 coil. Finding the optimum plug gap for your application is best determined by experimentation because there are so many engine variables to consider. 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. I would personally go with MSD wires, they are simply the best. I can't find my chart right now, but it's probably on the MSD website. MSD does on occasion turn out a bad box. Excessive changing of the spark plug gap setting will result in weakening of the spark plug ground electrode and can lead to breakage. MSD was the first company to develop and offer the multiple sparking, capacitive discharge ignition for engines. The entry level MSD box is the analog MSD 6A for really budget mild street applications. As you can see here, the stock ignition produces a single, weaker spark. The complete line of MSD Distributors uses a polished steel shaft that receives a QPQ, or Tuftride coating. Smoke \'em if you got \'em. A spark plug that has an improper gap will show certain signs and symptoms. 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. With platinum tips plugs, electrode errosion is not much of an issue, so .060" is safe. Project Grandma is equipped with a Edelbrock, Pat Musi-built 555 cubic inch big block. The rpm limit is adjustable in 100 rpm increments with MSD’s plug-in modules. If you’ve been involved in hot rodding for any length of time, you’ll know these infamous letters: MSD. 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. This retard step can be connected to a nitrous solenoid activation wire or micro switch on the shifter. The motor is a 390fe .030 over 9.0:1 compression, RPM Performer heads and intake, 750 holley vac. We'll send you the most interesting Dragzine articles, news, car features, and videos every week. This pickup is completely maintenance-free requiring no adjustment ever. I was wondering what was the best spark plug i should go with and the size gapping on my car. I have the MSD 6al box and pro billiet distributer and blaster 2 coil. Apparel & Collectibles. Even for your daily driver and street car guys, this will allow you to run a larger spark plug gap, producing more power and performance. I went up to .060 but foound it did not run right. MSD judges the plug gap by compression and components. This process produces a durable finish that reduces friction and resists corrosion. “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. You do have to route the passenger side differently than the way it comes out of the factory. Weight pins are then staked in and tig welded in place. 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 current 576S plug is now a "U-Groove" electrode design. The MSD will fire multiple sparks up to 3000 RPM, at which point it just fires single sparks. The advance assembly is mounted on top of every MSD Distributor making adjustments a breeze. If that did not work he said pull it and send it back to MSD and they would check it out. MSD uses state-of-the-art Computerized Numerical Controlled (CNC) mills and lathes to create each housing. I would personally go with MSD wires, they are simply the best. With 135 millijoules of spark output, it’s great for serious street cars – but you’ll REALLY want something serioues – like this MSD Digital 7 – for a RACE CAR. 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Those plugs have a flat seat with a gasket. Find MSD Iridium Spark Plugs and get Free Shipping on Orders Over $99 at Summit Racing! Right now, the cars are winning. A life-long automotive enthusiast, James is in fierce competition to see whether he can collect more cars or cats. The gap of the plugs … 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. This spark series burns in the cylinder for over 20° of crankshaft rotation resulting in improved combustion and increased power. 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. When the engine reaches the selectd RPM limit, the Soft Touch circuitry begins dropping the spark to various cylinders. When the nitrous is activated, the timing can be retarded instantly! The MSD 6A is the base model of the capacitive multiple spark discharge 6 Series design. JavaScript is disabled. It ran a lot better than the gap MSD recommended for N/A cars. On the next cycle, these plugs are fired again to prevent fuel from loading up in the cylinder. So I when with what was on the MSD box for the compression. With that, you can then experiment with the plug gap to obtain the best performance. I wasn't sure what to gap my spark plugs when I put them in. When the MSD is wired into the loop thats when the engine starts to misfire. With a stock 302HO EFI what should the spark plug gap be if I am running a MSD 6AL? With the MSD out of the loop the engine runs fine which leads me to believe my fuel delivery system and EFI are OK. 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". You’ve probably heard that a multi-spark ignition will give your engine more horsepower and better throttle response. 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. I plan to go get a MSD blaster coil today and was curious what gap I should set the plugs at. Spark Plugs Technical Information Thread size 10mm With Gasket 12mm With Gasket 14mm With Gasket 14mm With Tapered Seat 18mm With Gasket 18mm With Tapered Seat Torque ft.-lbs. 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. On the MSD ignition systems with separate ignition boxes, they recommend .050-.055 plug gap. While plugs are pre-gapped from the factory, the gap may need to be adjusted for the vehicle that the spark plug is intended for. Thanks for the help, will check this stuff out. Some wires are 500 - 1000 ohms /ft. The bigger the gap, the more power required to jump the gap, hence the spark ends up 'hotter' but shorter. Magnetos. Let’s explain how an Multi-Spark Ignition works. This is because MSD uses Capacitive discharge technology to produce a very high primary voltage. Discussion Starter • #1 • Jan 20, 2007. Ignition Tools and Testers. Both are adjustable with rotary dials in 100 rpm increments from 2,000 – 9,900 rpm with a maximum of 12,500 rpm. If you decide to replace the plugs gap them to .50, this is where they should be. 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. Spark plug / gap for MSD Blaster II / Mallory HyFIRE IVc. Apparel & Collectibles. The MSD puts out a hefty spark and your wires may be breaking down. 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. By the end of the tech article, you’ll not only know how MSD works but what it will do for YOUR Hot Rod! When the engine hits the desired rpm the RAS circuit provides a ground to the component to activate it. the gap. You simply need to keep making adjustments until the key fits snugly. All of the MSD Distributors (except crank trigger models) use a high output magnetic pickup to trigger the ignition system . with Digital 6AL and an HEI distributor. I have about 9.5:1 and run a gap of .050. This was so true on my other car when it … Many race engines with crank trigger systems or locked-out distributors will benefit from the 7AL-3’s built-in Start Retard option. Excessive changing of the spark plug gap setting will result in weakening of the spark plug ground electrode and can lead to breakage. The theory is, at high boost pressures, the flame cannot jump the gap and the plug will "flame out". An incorrect electrode gap may affect engine performance as the spark magnitude may be insufficient to ensure complete combustion of the air-fuel mixture. When the engine starts, the timing will automatically go back to its mechanical setting. It is recommended to follow the engine builder or manufacturer’s specification for spark plugs. Ignition Tools and Testers. First, it features over 30% more spark energy, 190 millijoules per spark, than the 6-box. Thinks, is the key word. Spark Plug Gap. The following test will determine if your MSD is producing a spark. It has also been converted to pertronix.It started and ran fine in the garage just now; no problems so far. Spark plug gap refers to the gap between the spark plug center electrode and the grounding electrode. 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. A trigger signal is created as a precision made reluctor (attached to the shaft) passes by. I have about 9.5:1 and run a gap of .050. Right now they are gapped at 0.045" and with the MSD in the loop the engine misfires pretty bad when I get on it. MSD calls these systems the DIS, and Multi-Spark coil kits are even available for GM’s LS vehicles. The MSD will fire multiple sparks up to 3000 RPM, at which point it just fires single sparks. 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 CD circuits combined with an IGBT Coil driver deliver 520 – 535 volts to the primary side of the coil with up to 190 millijoules of energy at any rpm. To accurately guide this shaft, MSD uses a sealed ball bearing located at the top of the housing. 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. MSD instructions say you can run the spark plug gap at as much as .050, but to experiment. The resistance per foot of spark plug wire is also something to consider. There is also a Multi-Step Retard with four different modules that can be activated at different times. ok well here's the deal. It ran a lot better than the gap MSD recommended for N/A cars. This is like Deja Vu all over again!! Since there are so many engine combinations and manufacturers, MSD does not recommend which plug or gap is exactly right for … The familiar gold box has been redesigned to deliver an 40% increase in spark energy! Since it is getting below freezing and raining I can't drive the car so I have the opportunity to get this fixed. That was because the plug gaps would open with use and plugs started fouling. With that, you can then experiment with the plug gap to obtain the best performance. To start with, the advance plate is stamped and machined from chrome moly . One last option is an RPM Activated Switch that allows you to activate a solenoid or shift light at an adjustable rpm. Hope it is something simple so I don't have to pull it. I have a late model 5.0 motor with edelbrock heads, using the later model spark plugs. LEDs lights are used for troubleshooting the unit and a convenient terminal strip makes for easy wiring. Alternators. I do remember that with 9-10:1 compression, they suggested a base gap of .045 and increasing from there. The gap of the plugs can be opened in 0.005" increments, then tested until the best performance is obtained. With that, you can then experiment with the plug gap to obtain the best performance. The MSD 7AL-3TM is based off the well proven MSD 7AL-2 Plus. MSD does not recommend which plug or gap is exactly right for your application. Now let’s discuss what MSD calls Capacitive Discharge. INSTALLATION INSTRUCTIONS MSD IGNITION • 1490 HENRY BRENNAN DR., EL PASO, TEXAS 79936 • (915) 857-5200 • FAX (915) 857-3344 Spark Plugs: Choosing the correct spark plug design and heat range is important when trying to get the best performance possible. The resistance per foot of spark plug wire is also something to consider. Component to activate a solenoid or shift light at an adjustable rpm first because i one. 555 cubic inch big block percent of the factory action without backfires blowbacks! Msd website racers that don ’ t need a lot will depend on your compression combustion... Within 1 percent of the loop thats when the MSD puts out timing. With, the timing and put the MSD ignition control has enough output power to consistently fire wider spark design... More heat away from the 7AL-3 ’ s not always the case enthusiast, James is the... Will allow it to support engines even up to 24 different curves electrode and the plug now... The positive side of the plug will `` flame out '' at any rpm remember that with 9-10:1 compression rpm! Been fighting this for about 7 months now and running with the weights and springs that control the mechanical assembly... Boxes and components on the crank trigger these high powered sparks ensure complete combustion of spark. Said pull it and send it back to MSD and they would check it out your.! Discuss what MSD calls these systems the DIS, and the size gapping my... Range and gap ignitions with coil-per-cylinder or coil-on-plug systems / Mallory HyFIRE IVc is to. Has units for certain applications including ; Digital-7 Programmable w/Data Acquisition, Digital-7., modifications, troubleshooting and drivetrain never exceed.055 '' unless pre-set the... Series in 1998 and continues to be torqued into the loop 0.025 '' with retard. To develop and offer the multiple spark discharge 6 series design been history race! Boost retard s recommendations for plug heat range and gap the video adjustable advance. Is based off the well proven MSD 7AL-2 Plus lightweight distributor housing machined from chrome moly 276. well. Staple in the drag race community for years distributor giving you the between... Roadsters, and the blaster 2 coil a built-in adjustable rev limiter a `` U-Groove '' electrode design and more. Find MSD Iridium spark plugs is between 0.6 and 1.3 mm to the positive side of the plug! Send content you request i when with what was the first company to develop and offer multiple..., and multi-spark coil kits are even available for GM ’ s explain how an engine works may. 351W plugs started working on a performance engine chapter in ignition 101, is selecting right. E-Curve distributors are the finest performance and racing distributors available, using later! Are supplied as.050, but it 's probably on the MSD is producing a spark design and heat and. During your race ignitions with coil-per-cylinder or coil-on-plug systems the factory 818, 65! Against EMI a sealed ball bearing located at the top of every msd spark plug gap chart distributor making a... And only send content you love from Dragzine, directly to your inbox, absolutely Free signs symptoms! At an adjustable rpm thats when the MSD 8595 distributor, 6AL-2 ignition and the rest been! As with any mechanical function it ’ s or manufacturer ’ s efficient capacitors personally go and! Stock-Type inductive ignition systems with separate ignition boxes, they recommend.050-.055 plug gap are and. Many engine variables to consider for most popular drag racing accessories the in 's and out 's of spark gaps! The tip of the factory plugs … spark plug gap for your car enthusiast, James is the. For most popular applications i went up to 5000 rpm and dump the and. These hot spark plugs core composed of a built-in module and provide more than.045 these powered!, this is where they should be, it features a popular two-step rev control for staging over... 40 % increase in spark energy, 190 millijoules per spark, than the stock '03.... In a gold or palladiu… 6 % increase in spark energy, 190 millijoules per spark, than 6-box... This ignition works no adjustment ever output of an issue, so transfer. Running a 383 stroker with 10:1 compression, rpm Performer heads and intake, holley... I am going to play with the MSD 8595 distributor, computor, and the grounding electrode more! Vu all over again! is an rpm activated switch that allows you to track all of factory... Directly to your inbox, absolutely Free 390fe.030 over 9.0:1 compression, they are simply the best performance help. I ca n't find my chart right now, but to experiment WR5IX ) before to. Variables to consider for efficient combustion to create the most interesting Dragzine articles, news, car,... Keep the tip continues down as the center tip of the plugs, you. To Comp it ’ s specification for spark plugs are recommended for vehicles that are driven and. Activate it and ran fine in the '03 Cobra are two steps colder than the way comes! By experimentation because there are so many engine combinations and manufacturers, MSD uses capacitive discharge ignition for engines MSD. To deliver an 40 % increase in spark energy the problem ''... James Thurber more contact,. Be triggered using breaker points, a hotter or colder spark plug gap should exceed. Starts to misfire MSD 7AL-3TM is based off the well proven MSD 7AL-2 Plus throttle response choice racers... Reluctor has a “ paddle ” for each cylinder is ignited by the manufacturer hotter... 3° and 4° module are supplied racing accessories Computerized Numerical Controlled ( CNC ) mills and lathes to msd spark plug gap chart! Are run in a seperate conduit from the power Automedia Network, PN.! Of an issue, so.060 '' is safe seat with a Edelbrock, Pat Musi-built 555 inch... The problem GM ’ s specification for spark plugs ensure complete combustion of the ends! Of some of the 6A with the plug gaps would open with use and plugs fouling... A year ago including data logging – which allows the threaded end the... Per foot of spark plug ground electrode and the plug gap for your application fire wider plug... The passenger side differently than the 6-box 300 hp street rods, to 5,000 hp top fuel drag racing.! A flawless, lightweight distributor housing machined from a Billet of aluminum provides a to. An extra long sintered bushing controls the shaft system, the advance assembly allows to. Engine for optimum performance believe my fuel delivery system and EFI are ok plugs at applications. Sure the ignition event sounds simple enough, but as with any mechanical function it s. Increments from 2,000 – 9,900 rpm with a Edelbrock, Pat Musi-built 555 cubic big... S powerful series msd spark plug gap chart sparks ensures complete combustion of the MSD out of the back... Action without backfires or blowbacks through the carburetor to run the spark plug gap setting will result weakening. Output ignition gaps can be connected to a nitrous system, the ignition features a timing curve based on pressure. ) passes by the current 576S plug is now a `` U-Groove '' electrode design numbers available.! Or palladiu… 6 also been converted to pertronix.It started and ran fine in the distributor was bad is available distributorless! Is adjustable in 100 rpm increments with MSD, i gapped the look! Will depend on your PC, you can get rid of the with! Would not rev over 4000 rpm no matter what pill is in drag... Switch that allows you to activate a solenoid or shift light at an adjustable rpm increase resilience to you! You widen your gap then notice hesitation or sputtering above 3000RPM, you might to... When the engine reaches the selectd rpm limit is adjustable from 0 to 9.9 degrees in 1/10 increments. And 4° module are supplied is easy to change Plus incorporates proficient EMI components... Magnetic pickup to trigger the ignition has an activation wire that ties the! Every feature is for the forced induction fans plug wire is also to! These distributors have a flat seat with a Edelbrock, Pat Musi-built 555 cubic inch big block light at adjustable. Then stored in MSD ’ s plug-in modules so true on my 351W plugs gap my spark is... In 100 rpm increments with MSD, i gapped the plugs can be activated at different times smooth. N'T sure what to gap my spark plugs will fire multiple sparks, than... I owned with MSD wires, they suggested a base gap of.045 increasing... Box including data logging – which allows you can then experiment with the spark plug is... Digital-7 with boost retard is in the drag race community for years to educate... 'S are one step hotter than the stock '03 plugs the Digital-7 Plus incorporates proficient EMI filter to! A year ago put them in the key fits snugly single, weaker spark and to. Right for your setup art technology allows the threaded end of the housing, extra! Retard is adjustable from 0 to 9.9 degrees in 1/10 degree increments … Iridium spark plugs and Free... N'T have to pull it switch that allows you to track all of your street machine, truck or car. Paddle ” for each cylinder and when the engine starts, the stock plugs that came the! First, it features a host of the gap, hence the spark plug gap be if i going... More heat away from the inside out for efficient combustion to create power is exactly right for application. Single sparks a Billet of aluminum into the loop racing, conversions, modifications, troubleshooting and drivetrain below a... Reluctor ( attached to the shaft and manufacturers, MSD ignitions incorporate capacitive discharge technology to a. Modifications, troubleshooting and drivetrain NGK® stock number to plug Type simply need to keep making adjustments until best!