Moto Meter vs APCO Temp gauge
 

As I posted earlier; Snynders provided me with a replacement APCO temp. gauge to test and exchange if needed.

I used a digital temp. probe which is very accurate and compared gauges.

I was surprised how accurate they actually were! At 160 degrees they both were within 2 degrees of the expensive digital probe.

Next: I tested the Moto Meter against the temp probe. My control water sample read 145.6 degrees. The motor meter was approx. 1/4 inch off the bottom.

So while my APCO is reading the temps leaving the engine... @ 180-190 degrees... the Moto Metter never got much above the 145 degree mark.

So it goes..... Sometimes with a Model A a Temp. gauge is way too much information ! :)

Re: Moto Meter vs APCO Temp gauge
 

Years ago a guy in our club was having trouble with his car overheating. He retimed the engine, the moto meter showed the temp getting up to the top. He checked the carb, maybe it was running lean, the moto meter showed the temp getting up to the top. He cleaned out the radiator. Still the moto meter showed the temp getting up to the top. He went on and on trying to find the cause of the problem and the moto meter showed the temp getting up to the top with each thing he checked.


He finally removed the Moto-meter and the car never did "over heat "again.