A-4 thermostat

http://www.atomic4.com/thermostat.htm

Has anyone tried the thermostat replacement (raw water cooling) from Indigo Electronics ?

thanks

--Steve

Are you aware of Moyer Marine's new thermostat? It was designed and manufactured by Moyer as a direct replacement for the original Holley 3 spring dual action thermostat, often referred to as the Holy Grail of thermostats, for the late model engine. It's been available for only about a year. I have one installed on my FWC A-4 and it has performed flawlessly. Pricing is a few dollars less than the Indigo product.
https://moyermarine.com/product/mmi-thermostat-150-degree/

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

My FWC A-4 with the Moyer thermostat routinely runs at 150°~160°. I would expect your RWC engine to be about the same and in consideration of salt precipitate that's probably a good thing.

I should add that I'm pumping coolant electrically, the engine is a direct drive and I'm running a fixed 2 blade 10x8 prop.