Hi guys I have just got new plugs for my boosted sohc I run 8psi daily and upto 11psi at the track (not often) the plugs are NGK BCP7EV just wondering what the correct gap for them is?? Is it .32 or less?? Cheers

 

.032-.034

 

.032 is good

 

So .32 will be good even at 11psi?? Thanks alot

 

it's a good place to start if you feel any misfiring go down some more.

 

Thanks is misfiring quite easy to pick out?

 

Yeah gapped to .32 and it is misfiring at only 8psi.... Now I am going to try .30 will post up how it go's incase anyones interested!

 

You probably know this, but some people don't so i want to make sure so they don't get the wrong idea. Go with a .030-.035" gap on the plugs, .32" is a big difference from .032". It's a hell of a lot bigger when gapping plugs.

 

how can you tell if your car is misfiring? loud popping noises upon acceleration?


[Modified by zojirushi, 9:20 AM 2/13/2003]

 

yeah basically if you go to big the car will miss pretty bad. Easiest way to describe this is basically just spitting and sputtering under boost. Basically if the gap is to big and your ignition is not strong enough the boost will actually blow the spark off the plug resulting in missing.

 

Will that sound like the same sputtering if you're running too rich? I get that when I boost at 8psi also, so I'm not sure which one it is.