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Old 09-19-2014, 07:43 PM
g zero g zero is offline
 
Join Date: Jun 2007
Location: palm coast fl.
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Default Heat range
Looking at spark-plugs , any correlation between compression ratio and heat range ? I have 10:1 pistons , engine was shipped with 32E plugs , but the wrong barrel thread (3/4, I have 5/8 harness) .
Looking at the Champion chart it appears the colder plugs are used on the higher compression engines ( HIO-360 8:7 uses 32E)
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Old 09-19-2014, 11:00 PM
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RV10inOz RV10inOz is offline
 
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32's or 29's and the pick of them is the Tempest fine wire, I think they are only in 32's.
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