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AC Spark (Delco) CHT probe (Aztec) wanted

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Jeff K

Senior Member
Joined
Apr 28, 2010
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My blasted CHT probe is intermittent, and they stopped making them decades ago.

Anyone got one of these, used or new they want to sell? The Piper Part number is 462-044.

I know about the Rochester probe 82 ohm series resistor trick (for proper redline) but that would mean I have to do both of them, and that would be alot of money on new probes for something that isn't accurate over most of its range. Eventually I'm doing an engine analyzer, but not yet. Just don't want to go bare in the meantime or have to recalibrate my factory gauges.
 

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