What tim saidThanks, gap is 28 at about the same on boost, what works good on cutting the strap?
I have run them down to .18 with no fouling car was street driven alotI have to wonder whether smaller and smaller spark plug gaps increases the tendency for plugs to carbon foul. This might be especially true when our cars are driven in colder weather and stop and go city driving? I widened the gap on my NGK 5430 BCRES plugs from .024 to .030 and there was less carbon fouling when driving in normal conditions. However, if I was only racing the car, the gaps would be tightened up.
So far the hand file works best for me, I'm dangerous with power tools ..You also need a small file to remove the burrs from the side electrode in the gap and all around the tip. You don't want any sharp edges on the side electrode at all.
Read post 70What a load of great tech info in this thread! I just learned about side gapping plugs. On my fresh new motor I'ma run the 5430 BCR8ES with my full port alum heads with new springs seated at 170, I'll do the side gapping and gap the plug at 24. The motor's whole bottom end is now forged so 30psi with a Norbs tune, alky and pump 91 ALL DAY! MY right foot will be my traction controller.
Can't wait to go have fun.