#61880, "RE: Spark plugs on a turbo 420A" In response to Reply # 0
I assume your turbo so your gonna want to go with NGK BKR7E-11 plugs... Gap them at .35 (some will say .48 but the .35 works a hell of a lot better for turbo and less stuttering) and youll be all set...
#61886, "RE: Spark plugs on a turbo 420A" In response to Reply # 4
The only difference is that the BKR7E-11 comes pregapped at .044 Thats why u should just get the BKR7E so that way you can gap them yourself, unless u want to try the .044 (up to you but it never worked for me)...