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Spark plug gap for n/a cars

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Old 08-10-2003, 09:28 AM
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Default Spark plug gap for n/a cars

What is the best gap for a N/a car right now mine are set at 35 I was wandering if they would be better at 45 or 60?
Old 08-10-2003, 09:33 AM
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Default Re: Spark plug gap for n/a cars

What plugs? TR-6? I think 35 is pretty tight unless your spraying or forced induction or very high compression.

With TR55's 50 to 55 seems to work pretty well, mine are at 55.
Old 08-10-2003, 09:42 AM
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Default Re: Spark plug gap for n/a cars

I had TR5's gapped at .035 and they fouled with only about 8-9K miles. I think a plug designed for a .060 gap is going to work best.
Old 08-11-2003, 01:10 AM
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Default Re: Spark plug gap for n/a cars

I got DENSO Iridiums .055. Keeps me from running rich at idle in high humidity.




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