what spark plug gap must have, specs. b18c1 itr pistons, pro1 cams, msd 6a. bkr6 ngk sp. for drag racing. thnks for help.

 

any help.

 

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you should be runnin the bkr7 with that kind of compression, set the gap at about .040. someone correct me if im wrong?

 

Brk7e for sure I had a gsr block with .038 gap. It depends on the gap put it on a dyno and check for any misfires. Also rule of thumb the higher your compression tighter the gap. Unless you're running an aftermarket ignition system

 

whit msd i need increase the gap? or reduce? thnks

 

good question, i dont really know. with MSD you get a better more consistent spark, so in theory i guess you could raise the gap without harm because of the more intense spark output. just to be safe set it at the recommended gap for now. someone with a little more knowledge please correct me if im wrong?