EGT sensor life

[zack]

Charles,

Have you looked into aircraft style EGT gauges?

Zack


Charles wrote:

> 
>         I have a thermocouple in the exhaust manifold of my BMW 745i,
> upstream of the turbo. It's a 1/8" diameter stainless probe for quick
> response times. They only seem to last about 40 hours though (the
> sealed end burns right off). Temps are usually around 1200 F at
> cruise, and as high as 1650 F with 15 psi boost. I've tried 321
> stainless and Inconel, both give up eventually. At $40 apiece from
> Omega Engineering, this is an expensive hobby...
> -Charles