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Do these tr6 plugs look too hot? Should I switch to a tr7? This is a n/a 12.75:1 large ci stroker running on e70. Wot fueling is perfect, 28 degrees timing no knock.
You have more than 1 turn of color in the threads so I would say yes by those pics. Should be able to swap and try a 7 and see how it does, pretty easy to do.
Last edited by ddnspider; Apr 9, 2020 at 06:01 PM.
Tr6 plug too hot? 
