Are you SURE you don't mean degrees F????  I used to race and used an EGT to
keep track of exhaust temps.  I had to stay below 1200 degrees F because
aluminum pistons melt at about 1250 F (approx).  At least they get soft
enough that the shock of a high-compression engine detonating the fuel will
blow a hole thru the top of a piston.  Been there, done that - didn't like
it!!

Dennis

----- Original Message -----
From: "Sean Alcorn - PIC Stuff" <picstuff@SDALCORN.COM>
To: <PICLIST@MITVMA.MIT.EDU>
Sent: Sunday, January 05, 2003 5:32 PM
Subject: Re: [PIC]: RE: Reading a thermocouple


> Herbert,
>
> >         I have never seen the exhaust manifold of an engine reach
> > anywhere near
> > 1000 degrees C, at that temperature many bad things would happen.
> > 350-400
> > degrees C yes, but not 1000.
>
> Well if I set my system up for 350~400^C (let's call it 500^C for a
> safety margin) and installed this system on the aircraft I fly every
> other weekend, then I'll fry my sensors shortly after I start the
> engine! Probably just as I open her up and start heading down the
> runway. I think the gauge is actually scaled from 500 ~ 900 - but I'll
> double check tomorrow and let you know. We are still in holiday mode
> here, so I hope to go for a fly in the morning! :-)
>
> >> b)      the engine may be on fire so the cylinder heads may be rather
> >> hot
> >
> >         ROTFLMAO
>
> Well, as Spehro has pointed out, 1300 is still possible.
>
> >> c)      (least likely, IMHO) an adiabatic ceramic military IC engine
> >
> >         Ok, well that one is above my head (and wallet I would
> > assume?). TTYL
>
> Me too! :-)
>
> Sean
>
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