Thermocouples common to CHT measurements can be either type J
(Iron,Copper-Nickel) or type K (Nickel-Chrome,Nickel-Aluminim). If
you use the "wrong" type....ie. a type other than that for which the
electronics were designed, the readout will be in error by roughly 30%
(at typical CHTs).

Sid Knox

Velocity N199RS
Starduster N666SK
KR2 N24TC
W7QJQ


wrote in message news:8IgSc.235233$a24.38600@attbi_s03...
A friend of mine is in need of six sparkplug type of CHT probes. He
bought a engine analyzer with bayonette probes, but his GO-300 won't
accept those.
I think that he bought the JPI one, i'm not sure what flavor probes he
needs.
Anybody have any laying around they would like to part with, cheaply?

Thanks

Dave