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Registered
Join Date: Mar 2007
Location: San Diego, CA
Posts: 203
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Correct Gap
What is the correct spark plug gap for a 2.2 with carburetors and an MSD?
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gary burch 71 911 |
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06-17-2010, 04:19 PM
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Join Date: Mar 2006
Posts: 818
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MSD says to gap to .050" to .060" for engines up to 10.5:1 compression ratio.
.040" to .050" for engines 10.5:1 to 13.0 comp. ratio. They also say to use changes of .005" until you get the best results. So I would gap to .050" and if the engine pulls to redline without misfire then leave it. If it doesn't ...reduce the gap until it performs correctly. |
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06-17-2010, 05:06 PM
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Join Date: Jul 2001
Location: Portland Oregon
Posts: 7,007
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Hi Gary,
"RSScotty" is a VERY sharp fellow with decades of experience (I know him quite well) but if it were me, I'd gap them at .045 and be done with it,...  Make sure your cap, rotor, and plug wires/connectors are all in perfect shape, otherwise that MSD will "find" all the deficiencies,...
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Steve Weiner Rennsport Systems Portland Oregon (503) 244-0990 porsche@rennsportsystems.com www.rennsportsystems.com |
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06-17-2010, 05:31 PM
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Join Date: Mar 2007
Location: San Diego, CA
Posts: 203
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Thanks, I will set the new plugs at .045.
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gary burch 71 911 |
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06-18-2010, 04:31 PM
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