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Spark Plug gap with MSD
This is on a 68S 2.0 weber carb engine. Using NGK BPR8ES with an MSD ignition. values for plug gap range widely from the Porsche manual which ranges from .012" to .018 for a factory ignition system to MSD which says .050" to .060 and from Wayne Dempsey which states .050" to .058". What would be recommended, can I really run .050" gap.
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07-24-2015, 02:04 PM
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non-whiner
Join Date: Aug 2012
Location: Slightly right of center
Posts: 5,235
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You didn't mention compression ratio, but I've found .045" to be about best.
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"Too much is just enough." |
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07-24-2015, 02:25 PM
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Registered
Join Date: Jun 2003
Location: Camarillo, Ca.
Posts: 2,418
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.045 is about the max you want to run with a distributor. Gaps above this starts to stress the cap/rotor and shorten their lifespans.
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Aaron.  F.S. 1965 Solex engine w carbs/cleanerBurnham Performance https://www.instagram.com/burnhamperformance/ |
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07-24-2015, 02:31 PM
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Fleabit peanut monkey
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Quote:
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1981 911SC Targa |
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07-24-2015, 03:27 PM
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1981 Porsche 911 SC Targa
