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Kyle, the OP is asking about the RX-8 oem plugs if I'm not mistaken. The link you posted refers to the NGK race plugs.... that info is correct for the 6725s but may not be for the RE9B-Ts.
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Kyle, the OP is asking about the RX-8 oem plugs if I'm not mistaken. The link you posted refers to the NGK race plugs.... that info is correct for the 6725s but may not be for the RE9B-Ts.
The gap should be car specific (for the most part), not plug specific. i.e. if the plug should only use the same gap, why make it gappable?
Different plug designs, different electrode thicknesses, etc.
If Timemachine is quoting the mazda FSM gap for the oem RX-8 plugs, then it's about double the gap for the NGK race plugs.
I've never seen the gap spec change for the same vehicle just because of the plugs. Not saying it's not correct, but typically the gap is vehicle (application) specific regardless of the brand of plug.
OP, get BUR9EQPs - $6 a piece.... bada bing, bada boom.
You mean the oem FD NGK plugs that don't need to be gapped?
Kyle, I know what you mean. Being that the majority of rotary plugs don't need to be gapped, it can be a bit of an odd subject.
Add to that the japanese NGK 7420s, which are technically gappable but due to the design you can't use a standard plug gapper to get an accurate gap. Quite the PITAzz
Add to that the japanese NGK 7420s, which are technically gappable but due to the design you can't use a standard plug gapper to get an accurate gap. Quite the PITAzz
I just gapped the old rx-8 9's I had to .030, then using a small flat head screwdriver I measured how far it would go into the gap then used the screwdriver to gap the 7420's to the same.
I just gapped the old rx-8 9's I had to .030, then using a small flat head screwdriver I measured how far it would go into the gap then used the screwdriver to gap the 7420's to the same.
I ended up doing something similar. Still a pain, lol.
Quote:
Originally Posted by 1Revvin7
Going to be a downgrade using the Rx- 8 plugs, they have less reach. @ 10psi you should just be running 4 x stock FD T plugs( ngk bur9EQ)
I've never seen the gap spec change for the same vehicle just because of the plugs. Not saying it's not correct, but typically the gap is vehicle (application) specific regardless of the brand of plug.
this is correct, gap is vehicle specific. I sell plugs on a daily basis and haven't seen different gaps specs for a given vehicle.
gapping RE9B-T
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