Thread: Plug recommendations, COP Cosworth.
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Old Jul 6, 2018 | 10:56 PM
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20/20 vision
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Originally Posted by Ridgey
What spark plugs are people using when converted Cosworth to COP running 400-500bhp? Also what gap you have been using as well.
I've been getting some missing.
Thanks
IK27 with 0.7mm gap driven by toyota yaris coils never missed at all on my car at 35+psi.

ive not actually tried openeing them up from 0.7mm and it may also be the case that other coil types may be incapable of firing 0.7mm gap or can fire larger gap
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