Harryr34

iTrader: (9)

Hi

What do you guys running NGK R7434-8 spark plugs gap them to?

Cheers

joz8968

iTrader: (13)

Official Subaru gap is 0.8mm

However, if running more than std boost, anything from 0.6 - 0.7mm seems to keep a good spark i.e. the boost won't blow it out.

A lot of people seem to settle on 0.65mm these days...

banny sti

iTrader: (68)

Harry are these for a daily driver and what power are you running/going for?

Harryr34

iTrader: (9)

Cheers i've got pfr7bs in there at the moment, gapped to 0.65

Banny i'm aiming for 499.3bhp lol, occassionaly gets used as a daily driver, these no good for a daily?

banny sti

iTrader: (68)

No good at all had so many issues with them last winter, car refused to start and would flood the plugs. Andy F advised unless doing top speed runs 7Bs are fine.

7Bs will be fine at that power lol I ran them at over 2bar in the region of 520bhp with no issue

joz8968

iTrader: (13)

Yeah, NGK PFR7B's are commonly used - they work!