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- - NGK R7434-8 gap? (https://www.scoobynet.com/general-technical-10/890046-ngk-r7434-8-gap.html)

Harryr34

25 May 2011 11:54 AM

NGK R7434-8 gap?

Hi

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

Cheers

joz8968

25 May 2011 11:57 AM

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

25 May 2011 11:59 AM

Quote:

Originally Posted by Harryr34 (Post 10057145)

Hi

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

Cheers

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

Harryr34

25 May 2011 12:14 PM

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

25 May 2011 01:02 PM

Quote:

Originally Posted by Harryr34 (Post 10057168)

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?

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 :thumb:

joz8968

25 May 2011 02:57 PM

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

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