EGT gauge (was: Re: Ignition retard knock sensor.)

[Ord Millar]

What type of sensor is used... is that a thermocouple for those temps?

And, is it possible to measure temp further back, like just ahead of the
cats?  I imagine that the heat loss would be fairly constant.

-----Original Message-----
From: Bruce Plecan <nacelp at bright.net>
To: diy_efi at efi332.eng.ohio-state.edu <diy_efi at efi332.eng.ohio-state.edu>
Date: Wednesday, May 26, 1999 7:13 PM
Subject: Re: EGT gauge (was: Re: Ignition retard knock sensor.)


>
>All out racing, one per cylinder, 6" or less from valve, during
>developement.
>Cast iron, keeps more heat in.  Tubular run cooler.
>Equally distant better.
>For racing you want max power, and depending on materials can go to where
no
>man travels.  For general street use you have to look for best resonable
>power.  Does, 1550dF make enough difference in your testing to be worth the
>extra wear and tear, for what that HP is.  For instantance, if you run a
>13.5 at 1575, and 13.4 is done at 1500dF.  Is it worth it?.  That is your
>choice.  Right now in our Puller, were running a 975dF EGT.  Way too cool
>for max power.  But, at this rate the guy that signs the checks is happy.
>The CID he's running is the smallest in his class, so an out right win
>against some of these really high rent jobs is unlikely, yet at this temp.
>we can do a top 5 anytime, usually better, and drive it onto the trailer.
>Racing can be dun for fun, and not as an exercise in check writting.
Which
>is what he likes.
>  Also, you can find the best fuel/timing to get a given EGT, on some
>combinations,  you can run much different fueling/timing, for similiar
EGTs.
>One usually makes more power.  If you run the high temp, might as well make
>as much power as possible.
>  EGT is for comparison in optimizing your tune-up.  There are general
>guidelines, but optimizing your setup is all that really matters at the end
>of the day.
>Bashful
>
>
>| Question for anyone who knows,
>| WHERE would be the best place to install one of these EGT setups on the
>| engine itself?  Where in the exhaust system?
>| I have a v-8 or two one with headers one with just exhaust manifolds
>| whcih I'd like to throw an EGT on!
>| Do I need one per cylinder or is that overkill?
>| I'm sure one per cylinder would be optimum, but what are the other
>| options?
>| Thanks!
> Todd....!!
>
>
>