ssbowtie1

iTrader: (16)

Is plug gap on iridium plugs any different than the NGK TR55 plugs? Engine is stock with bolt ons. Should I just go with .040-.050.

Also I've had these plugs for about 10k miles. Is there a way to clean them before putting them back in?

Finally, how do you guys gap your plugs. Do you use feeler guages or are those cheap autozone round gappers accurate?

ss.slp.ls1

iTrader: (36)

I think a .045 gap will do you fine. You could spray them with some brake cleaner. I use the little round gapper to measure the gap and I bend the little arm to get the gap I need.

mtuggle86

iTrader: (7)

Iridium plugs come pre-gaped

krill

I gapped my TR55-IX to 0.05 with a caliper and the car runs great.