12.01:1 compression. TR55's or TR6's.
06-24-2008, 07:06 PM
#1
12.01:1 compression. TR55's or TR6's. Like above says. I am running the TR55's right now with no detonation. But doing some reading it looks like I should be running the TR6's. I thought the 6's were for boost and nitrous. With either plug what should the gap be. I am running .045" right now and have run .035". I just don't want to give any thing up with plugs. So, what plug and what gap?
06-24-2008, 07:16 PM
#2
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I'm at 12:1 also, and I run TR6's and so far so good! I have them gapped somewhere between .038 and .040" and again seems to be working fine. I was afraid to go with the TR55 and be too hot of a plug and cause detonation. I figure it is better to be colder and not risk it.
06-24-2008, 07:19 PM
#3
TECH Addict
The general rule (including NGKs site) is 1 range lower for each 100hp and gap .004 lower for each 50HP not to exceed .008 from the manufacturers gap. Having said that, use what burns right and gives the best power.
