I know this has been asked in many different threads, but I have a slightly different question as well. Right now, it seems like the TR6's or TR7IX's would be my best choices. Aren't those two different heat ranges? Also, with the plug blow-out issues on the 2V heads, does any spark plug have any extended threads to prevent that? I thought I heard that the Motorcrafts were changed to help prevent blow-out. NGK's would not have this feature correct? Just trying to figure out which plug would right when I install my 2.1 KB on my GT in the spring. Thanks! :banana:
What Spark Plug for a KB 2.1L GT?
- Thread starter MineralStang
- Start date
It's hard to beat TR6s. The gap would depend mostly on the boost level. For up to 17 lbs, I gap my plugs at .032. I would regap them to .027 for anything over 18 lbs.
TR6 ftw!
Yup. The 6's are one heat range colder.
tr6 gapped to .032 up to 12psi and .028 for more just to be safe.
with the brisk plugs you can run a bigger gap
with the brisk plugs you can run a bigger gap
NGK BR7EF's at .032" are a great plug to run on the 2v's.
How much power are you looking to make? A 6 should be fine unless you decide to go crazy with the boost.
A NGK tr6 is a hotter plug than the 7.
A NGK tr6 is a hotter plug than the 7.
LS1PUSSOUT
Banned
if you have a 2002, your not going to have a spark plug blowout. your heads already have enough threads. i am using the BR7EF in mine. cant tell any difference between them and the tr6 while driving, but i know the br7ef will handle more heat. I already burnt the tips off a couple tr6 plugs...
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