How long do sparks plugs last in H/C car?
#1
How long do sparks plugs last in H/C car?
i have put about 5k miles on my car since a cam swap, and had the spark plugs for about 22k - 25k miles. the plugs are NGK TR55. dont notice any problems and dynoed 440 about 3 months ago. before i go and pull them, how often should these things be changed with a cam and 11.2-1 compression?
#2
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Your going to get mixed answers. Some will say to replace them every 15-20k, and some will say you can take them to 50k.
Im one of the ones that replaces mine every 15-20k. If it was a daily driver that didn't see much abuse I might leave them in longer, but its a daily driver that sees regular abuse haha.
The best answer I can give is pull one or two plugs and examine them.
Im one of the ones that replaces mine every 15-20k. If it was a daily driver that didn't see much abuse I might leave them in longer, but its a daily driver that sees regular abuse haha.
The best answer I can give is pull one or two plugs and examine them.
#4
here are pics of #1 cylinder on the top and #6 cylinder on the bottom in both pics
they are both pretty black, no white residue or anything, and the little "V" mark is still visible on the bottom copper piece. i have not checked the gap but they were originally gapped at .060
they are both pretty black, no white residue or anything, and the little "V" mark is still visible on the bottom copper piece. i have not checked the gap but they were originally gapped at .060