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mark houghton mark houghton is offline
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Join Date: Jul 2008
Location: Central Washington State
Posts: 3,705
I'm using NGK's in if I recall the 7 heat range. Started out with 8's and looked like it was running a bit too cold, so went up on heat range.
GK racing plugs.
R5671A-7 If you are not going to beat the piss out of her.
R5671A-8 if you are (colder)
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Mark H. 1987 930, GP White, Wevo shifter, Borla exhaust, stock everything else. The result of a massive Pelicanite good will fire recovery effort. Truely an open book, ready for the slippery slopes to modification.

Last edited by mark houghton; 01-15-2014 at 01:44 PM..
Old 01-15-2014, 12:44 PM
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