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Registered
Join Date: Aug 2001
Location: Twilight Zone
Posts: 387
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MSD HE CDI ignitions WAYNE
Wayne,
MSD, Multiple-Spark Discharge HE, High Energy Electronic Ignition CDI, Capacity Discharge Ignition I've looked in my books for answers, but found no answers. What is the differance between these ignitions? And, which is the better of the three? Ed-u-ma-cate me......... Thanks! -2.0 |
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PRO Motorsports
Join Date: Nov 2001
Location: Burbank, CA
Posts: 4,580
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They're all forms of Capacitive Discharge Ignition. The MSD just has multiple sparks per firing event.
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'69 911E coupe' RSR clone-in-progress (retired 911-Spec racer) '72 911T Targa MFI 2.4E spec(Formerly "Scruffy") 2004 GT3 |
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Registered
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Actually MSD is only multiple spark up to about 3000rpm where it becomes a single strong spark. It can be generally said that an aftermarket performance unit such as MSD produces a stronger spark than stock as well as offering some features or options not available stock such as soft rev-limiting, various types of timing control including programmable and boost controlled and multiple rev-limiters used in drag racing for burnout, launch and topend.
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Email me about 911 exhaust stud repair tools, rsr911@neo.rr.com 1966 912 converted to 3.0 and IROC body SOLD unfortunately ![]() 1986 Ford F350 Crew Cab 7.3 IDI diesel, Banks Sidewinder turbo, ZF5 5spd, 4WD Dana 60 king pin front, DRW, pintle hook and receiver hitch, all steel flat bed with gooseneck hidden hitch. Awesome towing capacity! |
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Author of "101 Projects"
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As said, they are all about the same thing. What are you requirements?
-Wayne
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Wayne R. Dempsey, Founder, Pelican Parts Inc., and Author of: 101 Projects for Your BMW 3-Series • 101 Projects for Your Porsche 911 • How to Rebuild & Modify Porsche 911 Engines • 101 Projects for Your Porsche Boxster & Cayman • 101 Projects for Your Porsche 996 / 997 • SPEED READ: Porsche 911 Check out our new site: Dempsey Motorsports |
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