Spark Plug Drama

[ULOOOK]

All sorted now thanks.

[RB30-POWER]

If you put a plug in that is to cold

(for NGK plugs, the higher the number the colder it will run)

it will foul up when your driving around the street when its under light loads, and not under big boost. The car will do anything from run rough, misfire, stall, hesitate, you name it if they foul.

This is because the cooler plug isn't hot enough to burn off the carbon deposits.

I would go no lower than a 7 on the street. This will allow extra headroom over the 6 rated plug, but shouldn't foul.

Realistically, if you go to the drags or have the car on the dyno, go to a 8 *if needed* for those conditions.

But if its a street car, I don't think it ever going to see sustained high power output requiring a cold plug.

[doubled]

IRAWAY BKR8E race plug i THINK only has a short life 5000k's so you need to replace them every few months when you change oil, becomes $$$ when they are $30 a pop.

That is what i was told Please correct me if im wrong.

[RB30-POWER]

You don't want all fancy iridium, platinum plugs and crap....

They cost money and do nothing.

Stick with standard copper plugs, for the price you can change them as often as you want and copper provides better spark anyway.

[blind_elk]

I switched to Iridiums and I'm more than happy with them.

I'm running 10psi and 180 Awkw. I left the gap standard (1.1mm). I'm more than happy with them - the car starts much easier, and they haven't missed a beat, including a session at Wakefield Park over Easter.

[ULOOOK]

Thanks everyone I think I have it sorted now.......I hope