Still more Re: <VV> CHT data calibrate

[FrankCB@aol.com]

        Well, Roger, where calibration comes in handy is in comparing 
DIFFERENT CHT gauges in DIFFERENT engines.  Does 350 deg F in YOUR 140 Corsa mean 
your engine is running colder than the 400 deg. F shown on MY 180 Corsa?  Or does 
it mean that our gauges are out of calibration?  Maybe YOUR 350 is really 400 
deg.F. and MY 400 deg F. is really 350.!!!! 
       I do agree that with any ONE gauge in ONE car, it is the CHANGE in 
reading from normal operation that provides the most important information.
       Frank "comical engineer" Burkhard  

In a message dated 10/26/04 3:15:52 PM Eastern Daylight Time, 
r.gault@sbcglobal.net writes:

> So, Frank, you're driving down the road and you look down and your CHT 
> gauge
> is reading 327 degrees.  What are you going to do with this information that
> couldn't be gotten from "Gee, it's a needle width higher than it was last
> week."
> 
> This is not to say that I didn't calibrate my VDO gauges in boiling water to
> see what the assumed reference junction temperature was, because I did.  I 
> am,
> after all, an anal engineer who likes to know useless things.  ;-)
> 
> Roger Gault