Hello,
From what I remember, the Merlin plugs and inserts that fit the AP Wasp will also fit Cox engines? I currently run the adapters and Nelson plugs (from kitting it together) in my Cox engines. I find they give an extra thousand revs over Cox heads.
I recently heard that Mr Nelson is retiring, does that mean the Nelson plugs will become obsolete? Will the Merlin plugs and adapters give the same sort of gain as the Nelson plugs, assuming they fit Cox engines?
Being a bit of a cheapskate 3 merlin plugs and adapter are about $13 and the adapters for the Nelson heads are around $12. Is it a matter of you get what you pay for, or are the Merlin plugs just as good?
Regards,
Andrew.