Spark Plugs

[JamesS12]

Originally Posted by adzs12

cant you sleep coz youve had a nightmare lol

Shhhh, dont tell anyone!

[adzs12]

Originally Posted by JamesS12

Shhhh, dont tell anyone!

Haha dont tell me, you was being chased down the road by a giant spark plug

[30psi]

There are 2 possible plugs.

BCPR7ES come pretty close to 0.9mm.

There is also the BCPR7ES-11 with is pregapped to 1.1mm.

[adzs12]

Originally Posted by 30psi

BCPR7ES come pretty close to 0.9mm.

Yeah 0.7mm as i said

[30psi]

Only clarified the above because you dont want people opening the 1.1mm gap further.

[PukkaSilvia]

lol. Next thread would be

misfire problem on boost

[JamesS12]

Basically I only asked the question because i was thinking of getting a set of iridium plugs for an s13! Dont know if this changes matters??

[Conkers]

The bcpr7es plugs.. is that for the 4 plugged ca18et engines?
Mine has the 8 spark plug ca18et and standard the plugs should be 5 on the exhaust side and 6 (heat range) on the inlet side... anybody know how this twin plug set-up works and the purpose...
Maybe I should just run 7's on both sides.... any ideas?

Mike.

[30psi]

Yeah, run 7's all round.

The 4 plug setup is only geared towards emissions, where by both plugs only fire together up to a low rpm like 3,000rpm, then it switches to just using the inlet spark plug.

[Conkers]

Thanks mate... so you reckon she'll run ok with 7's all round.... I'll get 8 of those on my way to the workshop later then....

Thanks...

Mike.

edited in:
Was just trying to figure out why they run a softer plug on the ewxhaust side, but it must be as these shut down at 3000rpm and could therefore duff up if there is a tendency for that sort of thing.... probably not helped by the turbo intermittantly smoking on idle from time to time, but not all the time.... Think James Bond.....

But back to plugs... so all 8 run up to 3000rpm for emissions... and then only the inlet side after that... correct????