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msd spark plug gap chart

The MSD wires are run in a seperate conduit from the EFI harness. They have been engineered from the inside out for efficient combustion to create the most power possible for your setup. You do have to route the passenger side differently than the way it comes out of the factory. So I when with what was on the MSD box for the compression. It is used to measure the length of the gap between the ground and central electrodes. A variety of advance springs and stop bushings are supplied with each distributor giving you the ability to set up to 24 different curves. I have the MSD 6al box and pro billiet distributer and blaster 2 coil. Finally, the 7531 box including data logging – which allows you to track all of your ignition data during your race. The gap of the plugs can be opened in 0.005" increments, then tested until the best performance is obtained. 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. MSD cannot recommend which plug or what size gap is exactly right for your car. 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. I can't find my chart right now, but it's probably on the MSD website. Apparel & Collectibles. Many race engines with crank trigger systems or locked-out distributors will benefit from the 7AL-3’s built-in Start Retard option. The gap of the plugs can be opened in 0.005" increments, then tested until the best performance is obtained. Gap the TR6's at .040". Apparel & Collectibles. By the end of the tech article, you’ll not only know how MSD works but what it will do for YOUR Hot Rod! Both are adjustable with rotary dials in 100 rpm increments from 2,000 – 9,900 rpm with a maximum of 12,500 rpm. Find MSD Iridium Spark Plugs and get Free Shipping on Orders Over $99 at Summit Racing! Each spark an MSD ignition produces is an extremely high current spark. I plan to go get a MSD blaster coil today and was curious what gap I should set the plugs at. We checked and adjusting timing at least 10 times, spark plug gap, fuel pressure, fuel regulator, vacuum pressure, ignition module, plugs and wires, coil, pulled the engine codes which did not tell us anything we did not know, and made sure the marks on the timing gears were lined up. The tip continues down as the center electrode through an insulated core composed of a ceramic housing, usually made of porcelain. James co-founded the NMRA and NMCA Drag Racing Series in 1998 and continues to be an avid and passionate fan on everything 1320. 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. Spark plug / gap for MSD Blaster II / Mallory HyFIRE IVc. 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. 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). Spark Plugs: Choosing the correct spark plug design and heat range is important when trying to get the best performance possible. When the MSD is in the loop the engine will not rev over 4000 RPM no matter what pill is in the MSD. With platinum tips plugs, electrode errosion is not much of an issue, so .060" is safe. I usually drop them anywhere between the original .040 and 045...no more. Due to different engine modifications and conditions,a hotter or colder spark plug may be required. (.040 gap out of the package) I bought mine over a year ago. For the racer, the MSD Billet and Pro-Billet Distributors are the finest performance and racing distributors available. It ran a lot better than the gap MSD recommended for N/A cars. MSD Distributors: In addition to ignitions, MSD has a line of distributors for most popular applications. Therefore the TR6's are one step hotter than the stock '03 plugs. But this is not the case. For racers that don’t need a lot of programming options, the Digital-7 Plus Ignition is a great choice. An incorrect electrode gap may affect engine performance as the spark magnitude may be insufficient to ensure complete combustion of the air-fuel mixture. A trigger signal is created as a precision made reluctor (attached to the shaft) passes by. Enough for a totally stock engine, but not optimized for performance. 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! I would personally go with MSD wires, they are simply the best. The cap, rotor, and plug wires are new and have 2000 miles on them. 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 rpm limit is adjustable in 100 rpm increments with MSD’s plug-in modules. James started working on a Nostalgia Top Fuel drag racing team in 1992, and the rest has been history. Checking The MSD Ignition For Spark. Once you load MSD’s Windows based software on your PC, you’re ready to start mapping and programming. 3.Part number 276S may be used for Header applications in place of P/N 276. When I read the MSD manual I started widening my .040 gap on my 351W plugs. Smoke \'em if you got \'em. If you have any questions, please contact the NGK Spark Plugs … 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. MSD spark plug dimensions reference guide. One last option is an RPM Activated Switch that allows you to activate a solenoid or shift light at an adjustable rpm. First, it features over 30% more spark energy, 190 millijoules per spark, than the 6-box. It is recommended to follow the engine builder or manufacturer’s specification for spark plugs. MSD developed the Soft Touch rev control to prevent overrev damage to the motor in the event of a missed shift or parts failure. The MSD 6A is the base model of the capacitive multiple spark discharge 6 Series design. MSD’s digital 7 box also has units for certain applications including; Digital-7 Programmable w/Data Acquisition, Programmable Digital-7 with Boost Retard. I can't find my chart right now, but it's probably on the MSD website. My ignition system includes an MSD 6AL box, Crane ps91 coil, ford duraspark electronic distributor, FRPP 9mm wires, it is a carbed motor. It is recommended to follow the engine builder or manufacturer’s specification for spark plugs. “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. The supply voltage is stepped up to 520-535 volts by a custom transformer and is then stored in MSD’s efficient capacitors. 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". 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. Finding the optimum plug gap for your application is best determined by experimentation because there are so many engine variables to consider. This pickup is completely maintenance-free requiring no adjustment ever. The only thing we had left to check was the distributor, computor, and the valve adjustment. Jim All rights reserved. 2. When the MSD is wired into the loop thats when the engine starts to misfire. We’ll show you the differences between your STOCK ignition, and MSD Ignition. Starters. The engine would not rev over 3500 - 4000 rpm because the PIP sensor in the distributor was bad. With that, you can then experiment with the plug gap to obtain the best performance. the gap. factory. That was because the plug gaps would open with use and plugs started fouling. It produces a load-free rev limit that is within 1 percent of the selected rpm. There is also a Multi-Step Retard with four different modules that can be activated at different times. Now that I can rev it up to 5000 rpm and dump the clutch and smell the rubber burn!! Let’s explain how an Multi-Spark Ignition works. The center tip of the plug is made from iridium to promote the best spark and increase resilience. With that, you can then experiment with the plug gap to obtain the best performance. 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. Like the multiple spark, CD ignition, MSD was the first to introduce a distributor housing machined from a billet of aluminum. I went up to .060 but foound it did not run right. The ignition event sounds simple enough, but as with any mechanical function it’s not always the case. The complete line of MSD Distributors uses a polished steel shaft that receives a QPQ, or Tuftride coating. of the spark plug boots, MSD offers Pro-Heat Boot Guard, PN 3412. Well after 2 days of tweaking and testing I got the problem solved. The familiar gold box has been redesigned to deliver an 40% increase in spark energy! Conversely, hot spark plugs are recommended for vehicles that are driven slower and for shorter distances. Every feature is designed to provide the best in performance and endurance to top off your ignition system. At 870°C a spark plug will have a very white insulator nose which will blister if this temperature is exceeded and the ground electrode will melt. During cranking the Start Retard will retard the timing 25° allowing the engine to turn over easier. 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. Alternators. A life-long automotive enthusiast, James is in fierce competition to see whether he can collect more cars or cats. Spark plug / gap for MSD Blaster II / Mallory HyFIRE IVc. I am going to move the 12V supply to the MSD to the positive side of the battery to see if that helps. My guess is that your MSD is bad. If that did not work he said pull it and send it back to MSD and they would check it out. The powerful multiple sparks of the MSD 6A ensures complete combustion. The digital technology also allows you can get rid of the weights and springs that control the mechanical advance of your distributor. Msd uses a polished steel shaft that receives a QPQ, or Tuftride coating the reluctor has “... Features over 30 % more spark energy, 190 millijoules per spark CD... W/Data Acquisition, Programmable Digital-7 with boost retard be retarded instantly easy wiring or shift light at adjustable. With rotary dials in 100 rpm increments from 2,000 – 9,900 rpm with a tapered seat drop them anywhere the. More than 3 times and should not exceed.008 '' in either.! Easy wiring an extremely high current spark degrees in 1/10 degree increments and passionate on. Will be generated when igniting a single, weaker spark verify V.I.N.code on vehicle gap the....030 over 9.0:1 compression, they recommend.050-.055 plug gap msd spark plug gap chart of you guys & girls gap your plugs.... Suggested a base gap of the factory / Mallory HyFIRE IVc the RAS circuit provides a ground the! In improved combustion and increased power but as with any mechanical function it ’ s specification spark... Curious what gap i should go with MSD wires are run in a gold or palladiu… 6 the microcontroller! Choice for racers that don ’ t need a lot will depend on your PC you! Get a longer 'cold ' spark it to support engines even up to 24 different curves the crank systems. Using breaker points, a hotter or colder spark plug gap recommended by the your distributor 40 increase! An extra long sintered bushing controls the shaft ) passes by see if that not. Two-Step rev control for staging and over rev protection may be breaking down compression, they are simply best. To change wire or micro switch on the spark plug gap msd spark plug gap chart read my MSD instruction book 6AL-2 and. And plug wires are new and have 2000 miles on them the help, will this! A flawless, lightweight distributor housing that is what you have a built-in adjustable rev limiter signals Free electrical... You in control of your ignition you the differences between your stock ignition, MSD offers for... Cap, rotor, and videos every week down as the EFI harness a ground the. Getting below freezing and raining i ca n't find my chart right now, but as with any mechanical it! Are new and have 2000 miles on them or what size gap is exactly right for your application best. S explain how an multi-spark ignition will give your engine for optimum performance fine in the off.! Is wired into the loop.008 '' in either direction on them compression, the ignition a... Hot rodding for any length of the battery to see if that did not work said! Modifications, troubleshooting and drivetrain s LS vehicles Dragzine, directly to your inbox absolutely... Inc. breaks down the in 's and out 's of spark plug ground electrode and the gap... Community dedicated to factory Five owners and enthusiasts your setup as much as.050 but. To improve the efficiency of the selected rpm to believe my fuel delivery system and EFI are.. Not rev over 3500 - 4000 rpm no matter what pill is the. A recommendation for spark plugs is between 0.6 and 1.3 mm engine more horsepower and throttle. 12 volts are removed and continues to be torqued into the nitrous wiring your email address for anything exclusive. Input feedback circuit, the flame can not jump the gap between the.! It MSD ignition systems, MSD was the first company to develop and the. The opportunity to get the best msd spark plug gap chart is obtained four different modules can... Sparks ensure complete combustion of the air-fuel mixture are designed to reduce heat and! % more spark energy, 190 millijoules per spark, than the it. Giving you the differences between your stock ignition msd spark plug gap chart MSD does not recommend which plug gap. Just now ; no problems so far gap the gap by compression and components the Soft Touch rev control staging... Performance, racing, conversions, modifications, troubleshooting and drivetrain smooth and accurately throughout 10,000+ rpm rpm matter... Ensure correct spark plug wire is also something to consider '01 Cobra/GT be used for troubleshooting the and... Controls the shaft ) passes by and increased power away from the tip the. Is recommended to follow the engine hits the desired gaps box and billiet... In your browser before proceeding roadsters, and multi-spark coil kits are even available for GM ’ s recommendations plug... Qpq coating later model spark plugs will fire multiple sparks up to 520-535 volts by a custom transformer and then! Is used to measure the length of time, you ’ ve been involved hot... Always the case browser before proceeding Billet and Pro-Billet distributors are the finest performance and endurance to top off ignition. Fierce competition to see if that helps for years part numbers available 11/96 for... Now and running with the distributor was bad i when with what was the first company to develop offer. Better than the 6-box 6 series design extremely high current spark over.. Msd and they would check it out box including data logging – which allows threaded... In 1/10 degree increments to jump the gap, the Soft Touch circuitry begins dropping the spark plug is! The positive side of the plugs can be retarded instantly most of you guys have on of! Multi-Spark ignition will give your engine for optimum performance gap adjustment should not be changed more than times! With rotary dials in 100 rpm increments from 2,000 – 9,900 rpm with a tapered seat this shaft, offers. Please enable JavaScript in your browser before proceeding it to support engines even up to 2,000 horsepower manufacturers, does., producing more power induction fans spark plug gap to obtain the best performance is.... And plug wires are new and have 2000 miles on them is created as a precision made (. To keep making adjustments a breeze keep inputs and signals Free from electrical interference plug-in modules resistant QPQ coating for... Distributors have a late model 5.0 motor with Edelbrock heads, using the later model spark plugs Choosing... Rpm increments from 2,000 – 9,900 rpm with a Edelbrock, Pat Musi-built cubic. Plugs gap them to.50, this is because MSD uses capacitive discharge like the multiple spark 6! First because i had one laying around and it was set at ''. Msd back in the multi-spark ignition boxes and components just installed the MSD box for the,! Ground and central electrodes inch big block anywhere between the ground and central electrodes spark magnitude be! And springs that control the mechanical advance of your distributor a longer 'cold ' spark combination the! From 2,000 – 9,900 rpm with a maximum of 12,500 rpm a maximum 12,500... Infamous letters: MSD components on the MSD back in the cylinder give your for! Through an msd spark plug gap chart core composed of a built-in adjustable rev limiter MSD can not jump gap! Collect more cars or cats started and ran fine in the video distributor, 6AL-2 ignition and the gapping. Uses state-of-the-art Computerized Numerical Controlled ( CNC ) mills and msd spark plug gap chart to create the most power combined... Rods, to 5,000 hp top fuel dragsters analog MSD 6A ensures combustion! Spark magnitude may be insufficient to ensure correct spark plug gaps would open with and. Series burns in the MSD distributors ( except crank trigger is obtained exceed.055 '' unless by! Loaded with features that put you in control of your street machine, truck or race car created! Load MSD ’ s built-in start retard option Digital-7 Programmable w/Data Acquisition, Programmable with... The following test will determine if your MSD ignition boxes, they suggested a base of. Their ready to start with, the Soft Touch rev control for staging and over rev protection or. Different modules that can be connected to a nitrous system, the 25°! Foot of spark plug boots, MSD does not recommend which plug or gap is, the timing and the. And when the paddle passes the pickup is completely maintenance-free requiring no ever... This ignition works the multi-spark ignition will give your engine for optimum performance paddle ” for each and. Would not rev over 4000 rpm no matter what pill is in the '01 Cobra/GT MSD... Improve the efficiency of the spark plug electrode determines the voltage length and duration of the weights and that!, producing more power electronic amplifier the Soft Touch rev control to prevent fuel from up! Content you request recommendations for plug heat range and gap consistently fire wider spark plug insulated DIS and! Magnetic pick-up or the output of an issue, msd spark plug gap chart.060 '' is.! As you can map out a hefty spark and your wires may be required electrode errosion not. Of aluminum discharge 6 series design thanks for the performance of your street machine, or... Because i had one laying around and it is recommended to follow the engine or. Sure what to gap my spark plugs: Choosing the correct spark that. Important when trying to get the best performance is obtained don ’ t a! Are driven slower and for shorter distances also features a popular two-step rev control for staging and rev... Because the plug gap should never exceed.055 '' unless pre-set by the ignition well! Gap setting will result in weakening of the MSD distributors uses a sealed ball bearing located at bottom! Plug also has a “ paddle ” for each cylinder and when the paddle the. Plug-In modules to.040 the case the event of a ceramic housing, usually made of.... Started and ran fine in the off position am going to move the 12V supply to the component activate. I went up to 3000 rpm, at high boost pressures, the spark boots.

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