Plug indexing?
06-07-2011, 07:55 PM
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Plug indexing? Do you guys index your spark plugs? Make sure the open end faces down? I work on a sprint car and we index the plugs to be sure to get the best burn possible. Does anyone do this and should i worry bout doin it?
06-08-2011, 12:24 AM
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Go for it. It requires installing the plugs with the heads off the engine, correct? Most people aren't pulling the heads off their car's engine so it isn't done. Maybe I am wrong?
06-08-2011, 01:12 AM
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I believe to index plugs they should be pointing towards the exhaust valve. just mark the plug with a sharpie so you know where the open gap is pointing. no need to remove heads for indexing plugs!!!!! you will need shims to get it right. I'm running N2O so I index my plugs. do they help? might not on my lousy street-n-strip 5xx+ rwhp car, but top dogs do it. anyways, it makes my feel more confident about what i'm doing..
