best spark plugs?
#7
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I don't know what to gap TR55's at anymore - their website says .044 now. Used to be .055 was recommended and they came close to .060. I'm going back to Denso's.
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#8
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Originally Posted by 2001NBMZ28
I don't know what to gap TR55's at anymore - their website says .044 now. Used to be .055 was recommended and they came close to .060. I'm going back to Denso's.
#10
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Originally Posted by taintedmeat
Gapped my last set at .050
#12
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Well, I'm going back to the original plugs that came with my car - Denso PTJ16R15's gapped at .060. Somethings going on with NGK changing the gap/plug? Apologize to the original poster, kinda got off-track.
Edit: Similar discussion from a couple days ago on the new TR55's - www.ls1tech.com/forums/showthread.php?t=645606
Edit: Similar discussion from a couple days ago on the new TR55's - www.ls1tech.com/forums/showthread.php?t=645606
Last edited by 2001NBMZ28; 01-25-2007 at 09:19 PM.
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Originally Posted by 2001NBMZ28
How long ago, just curious? Did they come gapped at .044? NGK used to say .050 for 98's and .060 for 99 and up on their site, which I never understood either. Gapped mine at .055 w/no problems a couple years ago, but wondering why they changed the TR55's gap. New ones come pregapped at .044.
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Anyway, been running mine at .050 for over a year, been fine the whole time.
#14
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Just saying NGK has changed their gap on the TR55's on their website for LS1's. Same part numbers but changed the gap from .060 to .044. Wondering what the difference is? Is the heat range the same?
#19
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Originally Posted by 2001NBMZ28
Just saying NGK has changed their gap on the TR55's on their website for LS1's. Same part numbers but changed the gap from .060 to .044. Wondering what the difference is? Is the heat range the same?
Just thought I'd share...