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+--- Thread: Racing plugs? (/showthread.php?tid=8847)
Racing plugs? - Dirk73 - 30-08-2023
I wonder if anyone in the A7 racing fraternity could recommend a good plug? I've been using the Champion D16 18mm as available from our cherished suppliers but have had a few failures.
I've got a set of 18mm-14mm adaptors so could change to a 14mm plug if that gives more options. The engine is fairly hot (blown 12psi).
Any suggestions very welcome
RE: Racing plugs? - David Cochrane - 30-08-2023
The Champion D21 18mm plugs seem to work better than the D16s and are available from the Cherished Suppliers.
RE: Racing plugs? - Howard Wright - 31-08-2023
+1 for D21s. They work well on my Special with a Ricardo head!
Cheers
Howard
RE: Racing plugs? - Charles P - 31-08-2023
I've found the older style NGK A6's (not AB6) work well with my blown car.
Charles