My brother is putting tr6s in his 93z this weekend and he has bolt ons only.but eventually is going to do n20. since they come gapped .035ish out of the box what should he gap them at? .05? i have read a lot about lack of performance on a N/A car with colder plugs thats why i ask. thanks

 

He can gap them standard until he runs the bottle. Once he starts sparying he should have them gapped .030-.035. I notice no difference driving my car n/a gapped at .035.

 

what is the stardard gap on Z28s ? or do u think he should just go ahead and gap em at .035 so he doesnt have to pull em again when he goes to n20? thanks

 

They are pre-gapped to .35 i think. As long as the No2 is comming relativly soon so where you don't want to pull the plugs again, just leave them as is. Yes it will hurt your n/a time, but it will be much safer when spraying and you shouldn't even really notice it. Just my .02