simple spark plug question

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Dec 28, 2006 | 08:06 PM

skylancer

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simple spark plug question

when to use colder spark plug? they told me 1 degree colder will be good? why?

Dec 29, 2006 | 07:31 AM

gregivq

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If you're boosted or highly modified.

Dec 29, 2006 | 07:34 AM

TxEvo8

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High boost applications..

Dec 29, 2006 | 07:36 AM

tribe

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Rule of thumb is 1 step colder for every 100 hp.

Dec 29, 2006 | 07:47 AM

tuning g

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If you are making more power you are creating more heat in the cylinder so one step colder I believe will lower the cylinder temp.

Dec 29, 2006 | 08:36 AM

Mirage2.0

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Or if you are running high compression pistons.

One step colder:
http://ngk.carshopinc.com/product_in...40838/BKR6E-11

Two step colder:
http://ngk.carshopinc.com/product_in...81167/BKR7E-11

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