Spark plug gaps

[maximumrpm]

Just a quick question is it advisable to gap plugs with only 60k use from 1.1mm to 0.8mm or is it better to buy a new set...will re gapping them weaken them???

[SLY33]

depends on the state of the plugs themselves as it couldve been an easy 60k or a hard driven 60k. If you do it carefully with a good gap tool it shouldnt weaken them. My plugs dont usually stay in for too many k's so if it were me id just get new ones. depends on your application, stock or modified, boost etc...

[BHDave]

And if the car has been running fine with the plugs at 1.1mm for 60k whats the point in gapping them down? I ran a 1.1 plug gap on my rb20 up until it was making 165rwkw with no problems. I only started to gap the plugs down once i swapped the turbo and started winding in the boost.

If it is staring to miss now but hasn't before then i would just be getting a new set of plugs.

I tend to do mine at 10k anyway as i run copper plugs and previously ran platinums swapped at 40k.

[maximumrpm]

easy driven...im getting back fire with my mods now so ive deciding to gap them smaller and add a safc

[BHDave]

Go the new plugs if you are going to the bother of pulling the existing one's out then as it's a prick of a job becuase of the amount of stuff that has to come off to get to the plugs.

Though i did mine in 5 minutes this evening as i now have external coils