I gap my plugs to 0.040"
Joined: Apr 2009
Posts: 6,036
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From: FAR BEYOND THE WHEEL...
When I ran a meth kit w/ my turbo setup @ 13psi I needed to keep them at .022 -.025 or they would break up at higher RPMS
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Joined: Jun 2007
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Often times, someone will do something that works, others will follow and it becomes "gospel". However that does not always mean that what everyone is doing is the optimum.
One of the things that many people will suggest is running BKR8EIX plugs at the NGK supplied gap of 0.026", people will say things like "you need the small gap to avoid spark blowout" and "you can't gap irridiums".
Well, I decided that seeing as Honda thinks you should gap your plugs to 0.040", which is quite a bit larger I would give it a try.
I would love to say I have before and after dyno plots showing fantastic gains running the plugs with the larger gap but I do not. What I can say is that the car runs great with the plugs gapped to 0.040" and if you can run a larger gap without any issues (blowout etc) I can't see how this could possibly be bad. Longer spark, larger flame front, better burn.
Just some food for thought
One of the things that many people will suggest is running BKR8EIX plugs at the NGK supplied gap of 0.026", people will say things like "you need the small gap to avoid spark blowout" and "you can't gap irridiums".
Well, I decided that seeing as Honda thinks you should gap your plugs to 0.040", which is quite a bit larger I would give it a try.
I would love to say I have before and after dyno plots showing fantastic gains running the plugs with the larger gap but I do not. What I can say is that the car runs great with the plugs gapped to 0.040" and if you can run a larger gap without any issues (blowout etc) I can't see how this could possibly be bad. Longer spark, larger flame front, better burn.
Just some food for thought
