question, about OE CHT sensor Options

[bd1308]

now that i have carbs, i have no use for my CHT....is there any way to get a CHT guage to work with the stock sensor rather than having to buy a setup........

[Dave_Darling]

The common aftermarket CHT gauge uses a thermocouple to measure temperature. The thermocouple puts out a very very small voltage which varies depending on the temperature difference between the two ends of the TC.

The FI's CHT sender is a Negative Temperature Coefficient thermistor. It changes resistance with temperature, and does not put out any voltage on its own.

The principles are completely different; you cannot mix/match the senders and gauges between the two.

You can, however, hook up the FI's CHT sender to the stock oil temp gauge. It will be only marginally less useful than the stock oil temp gauge, telling you "hotter" and "cooler" but not hotter or cooler than what. And, as the Cap'n pointed out, it will max out its reading somewhat before full operating temperature is reached. But at least it'll show something during warmup. Not sure how much of the gauge it will cover, though.

--DD