Spark plug heat ranges
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Scooby Regular
Joined: Aug 2014
Posts: 46
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From: England
Spark plug heat ranges
Hi guys. I tried searching but it didn't make me any the wiser :-(
I'm looking to replace the plugs on my 420bhp 2.1 stroker.
When I bought it it was running 350ish with NGK iridium 7s.
It's just started misfiring on boost (1.7bar) so was looking to replace but I'm confused what the heat scale means (colder for higher tuned cars - what??) and I'd really appreciate a little advice on the subject.
Thanks guys.
CS
I'm looking to replace the plugs on my 420bhp 2.1 stroker.
When I bought it it was running 350ish with NGK iridium 7s.
It's just started misfiring on boost (1.7bar) so was looking to replace but I'm confused what the heat scale means (colder for higher tuned cars - what??) and I'd really appreciate a little advice on the subject.
Thanks guys.
CS
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