Thanks. I like Moyer. Bought replacement head (and gaskets) and carb from them last year.
Will probably convert to electronic ignition this year rather than mess with the points.
They are very helpful in selecting parts and things arrive promptly as advertised.
The Inigo unit looks more complicated, but it might just be razzle l dazzle. I'll compare both in a little more detail.
I note that the Moyer link says keeps the engine in the 170 - 185 range (raw water cooling).
My A-4 routinely runs around 140 with 70-ish (or even higher) deg intake.
What temp have you been experiencing with the Moyer thermo ?
thanks
--Steve