What plug and gap to start with?

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Jul 9, 2009 | 01:39 PM

TS6

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From: Champaign Il

What plug and gap to start with?

11.7 to 1 408, PRC stage 3 heads, pump gas (93) in the tank with stand alone cell (probably 110 octane) for the spray. Gonna start on motor, then spray 100 to start. Eventually end up at 200 max. Shift at 6500, A3, etc.

I'm thinking TR6 at about .030, but been into blower cars running NGK8's at .027. Different setups, getting back into the nitrous stuff for now.

Jul 9, 2009 | 01:48 PM

JAX04

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From: Indy

from what i understand, tr6 is a good tried and true plug, i personally run ngk BR7EF, wich is one stage colder then the tr6. but as far as gap, youll get alot of different answers. i started with .035 and still using .035. Probably just cuz i dont know anybetter. lol. im sure someone will come along and help more.

Last edited by JAX04; Jul 9, 2009 at 02:05 PM.

Jul 9, 2009 | 01:48 PM

ShiznityZ28

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From: GB MD

motor ~ 7 or 8. nitrous 9 - 10 don't mess with the gaps on the 9 or 10 just check them to make sure there even.

Jul 9, 2009 | 02:34 PM

TS6

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From: Champaign Il

Quote:

Originally Posted by ShiznityZ28

motor ~ 7 or 8. nitrous 9 - 10 don't mess with the gaps on the 9 or 10 just check them to make sure there even.

That seems really cold on motor, no? I'd think I could run TR6's at .035 on nuts, but I'm trying to learn here.

I plan to street drive this too, not daily, but won't those foul easily?

Jul 9, 2009 | 04:00 PM

ineedamotor

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i was just about to ask this stuff haha!!

Jul 9, 2009 | 04:34 PM

Pro Stock John

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I ran TR8's in the Z/28, might have been a little bit of overkill but the car drove fine NA and never fouled the plugs. I pulled them twice but they were nice. I do think that some folks push TR6's a little too much, they are only like one heat range colder than stock.

Jul 9, 2009 | 05:09 PM

Grant@NitroDaves

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From: Waco, Tx

We also recommend a non-protruded plug against the protruded TR6. Dont get me wrong, the TR6 is a good plug but if your going over 100 shot I would get the BR7EF(non-protruded) just to be safe.