 Spark plugs and compression ratio, Progressive fouling of cold plugs. |
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| Joe Ricard |
 Mar 17 2008, 03:21 PM
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CUMONIWANNARACEU  Group: Members Posts: 6,811 Joined: 5-January 03 From: Gautier, MS Member No.: 92  |
Old motor I was running 7.8:1 compression and 87 octane. NGK 7bpes plug. ran pretty good
new motor 10.1:1 compression 93 octane same plug getting fouling in a gradual progression right on up to horrible preformance. I am picking up some NGK 6bpes plugs tonight. I seen a 5 bpes available too. How do I calculate what or which is best? Tried leaning out the carbs but it had little effect now that the plugs are fouled. Oh and rings are now seated which during break in the plugs got a beating. Hell of a way to fix my traction problem. just reduce my horsepower. |
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Posts in this topic
Joe Ricard Spark plugs and compression ratio Mar 17 2008, 03:21 PM
J P Stein Get a check on your AF ratio. Your compression rai... Mar 17 2008, 05:44 PM Joe Ricard Yep, throwing some pretty big lighting bolts at th... Mar 18 2008, 05:13 AM
J P Stein Does that mean everyone else here is afraid of red... Mar 18 2008, 03:08 PM  |
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