reading plugs. copper v. iridium
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Joined: Feb 2002
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From: St. Cloud, MN, US
reading plugs. copper v. iridium
1) alright, I've got a 94 GSR and when I bought it it had copper plugs that an LS should have ( had nitrous) . So I put in the stock iridium plugs( Autolite) and noticed a big power improvement. The copper plugs where a perfect tan color, then when I put in the iridiums they are just white 
. Do iridiums read differently? am i lean?(no knocking or white specks)
2)I turned my timing from 14-18 BTDC. and put in new plugs(top). My FPR reads 37 psi at idle and 4k. This seems wierd. car shoould be faster. should I adjust the FPR? alsothey guy who owned it said it had a 5 angle valve job and higher comp. , but I don't think it does, would this affect my FPR.
I/H/E.. I know it's a lot of Qs but thanks for the help
. Do iridiums read differently? am i lean?(no knocking or white specks)2)I turned my timing from 14-18 BTDC. and put in new plugs(top). My FPR reads 37 psi at idle and 4k. This seems wierd. car shoould be faster. should I adjust the FPR? alsothey guy who owned it said it had a 5 angle valve job and higher comp. , but I don't think it does, would this affect my FPR.
I/H/E.. I know it's a lot of Qs but thanks for the help
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ringgold
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May 16, 2004 05:41 PM
