Quote:
Originally Posted by invalidsession
Are you thinking of the old racers trick of indexing the spark plugs so that the ignition source of the plug directly faces the exhaust valve Gorno ? I spent hours shimming plugs to create that when I raced motorbikes and never noticed a difference worthy of a nuns fart although some swear by it. (Not the fart btw)
Chris.
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No, I was refering to the fact that the new plug shaft would enter the cylinder even deeper than the old one. The picture that was posted shows this clearly when you line up the threaded base shoulders on the plugs. If there was a clearance issue it just got worse.