Couple of questions?
What type of probes you using ?? There are 3 types in the std. K model.
Mostly the difference is how fast they react and how long they last - The
most sensitive ones are the one I use with my Digital EGT in all 4 cyl and a
switch to read 2 cyl at once, so far been in for 2 years and no problems -
You said needle so that is a analog type of meter- Is it just starting to
move? Then by your description you are approaching 800 degrees - You should
be between 900-1000 at idle - So if they are working? Then you are very rich
or if the car is not running right I would check all the mechanical issues
first by doing a leak down, just to make sure you are not overcompensating
for something else- I don't have much experience with SU's so I could to
tell you how to adjust the carb - Now at wide open throttle you should be at
around 1275-1300 -(optimum is 1325-1350) I like a little safety zone - I
take a look at this right before I hit the brakes at the end of the
straight - More important that you get all cylinders within 50 of each
other- I gave up the old plug read bit long ago and took the guessing game
right out of it with the EGT's - I can now adjust and fine tune my Webbers
at each track for that particular day as well, mostly with just slight
adjustments and know I'm getting all the power possible -
Good luck -
John Wilkins
Spitfire #892 DP
----- Original Message -----
From: <WEmery7451@aol.com>
To: <fot@autox.team.net>
Sent: Monday, May 02, 2005 10:09 PM
Subject: Exhaust Gas Temperature Gage
> Dear FOT,
>
> I finally got around to installing an exhaust gas temperature gage, with
> sensors in the Number 1 and Number 4 exhaust manifold pipes. The two
> scales on
> the gage range from 8 to 16 degrees F, with a 100 multiplier. At first,
> the
> gage arrows would not move off of their low points, so the gage may be
> faulty.
> Then one of the two arrows started to move upscale, with the other one not
> moving at all.
>
> This brings on the following questions:
>
> -Could there be anything else wrong besides the gage being faulty?
>
> -Approximately, what temperatures should I be seeing?
>
> -If the gage were working properly, are we supposed to adjust the mixture
> to
> the carburetors to obtain nearly equal temperature readings of the two
> needles?
>
> I have been adjusting the carburetor jets by turning the nuts out a
> specified
> number of turns, and then using a depth gage to set the jets an equal
> distance down, with the cover, piston, and needles off of the carburetor.
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