Thread: engine mods??
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Old 11-21-2013, 12:48 PM   #40 (permalink)
beatr911
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B2300 - '96 Mazda B2300 SE

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Quote:
Originally Posted by jkv357 View Post
What are your thoughts about bumping up the heat range over the stock plug because of low RPM and light load operation?

The stock heat range factors in a wide range of conditions, including extended high RPM running, to ensure safe maximum temperatures. Consistently running much lower RPMs and loads should put the temps much lower than optimum with the stock heat range - you'd think.
I dunno. Heat ranges are something I don't mess with unless there is a fouling problem or burning. If anything, it seems a slightly cooler running plug at light load would be an asset if the compression was increased at all as has been discussed. One less thing to be a glow plug and cause pre-detonation or inconsistent flame spread.

I'm sure there is someone else that knows a whole lot more than me about heat ranges, and any directly attributable performance benefits within an acceptable range.
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