[Fot] Exhaust gas temp probe location

[Jim Gray]

At 5200' elevation my timing is 36 degrees BTC, that's 2 below what others
run up here, at Topeka I was at 31 with all my advance in at 4000.
My gas is 108 at 12.5:1 CR. I guess when I installed the probes I was under
the assumption all EGT gauges & probes were the same with the same offset
from the flange. 

Jim G 
# 102

-----Original Message-----
From: Kas Kastner [mailto:kaskas at cox.net] 
Sent: Wednesday, January 05, 2011 6:22 PM
To: toodamnfunky at comcast.net
Subject: Re: [Fot] Exhaust gas temp probe location

That close to the flange will probably still see some flame and that is too 
close for accurate readings.  The retarded ignition will also add to the 
exhaust temp. But then, I don't know what you mean by "retarded" as in 
retarded from what, and what engine and what gasoline octane? (always more 
questions)
--------------------------------------------------
From: <toodamnfunky at comcast.net>
Sent: Wednesday, January 05, 2011 3:26 PM
To: "fot" <fot at autox.team.net>
Subject: [Fot] Exhaust gas temp probe location

> Greetings FoT,
>
> I'm looking for some opinions on probe location . I use the Westach
>
> dual EGT gauge which I bought used, it didn't include the users manual.
>
> I locatedB the probes B about 1.25" from the flange. Last season I was 
> plagued
>
> with high EGT's while jetting very rich and running timing on the retarded
> side.
>
> In the process of updating my build book I downloaded the Westach users 
> manual
>
> and it says to locate the probes 6" from the flange. I can't say I have 
> ever
> seen
>
> probes that far away from the flange.
>
> Input would be appreciated.
>
>
>
> Jim G
>
> # 102
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