[alfa] Exhaust temperature

[Jon Pike <jhpike@xxxxxxx>]

Hi all..

Another quick question.. this one for the mixture guru's..  Just stuck a 
thermocouple probe into my exhaust just upstream of my cat converter, 
and am reading temp's for the first time.  Curious on what is a "normal" 
range.  I know that one can get a gross idea of mixture by the temp,  
with a lean mixture causing it to go high.

I'm seeing a range of 500-700C, (932-1292F!) with 570-600 being average 
during cruising,  and going as high as 700 during a WOT romp thru the 
gears..  Seems kinda high, but I don't know..   I have the thermocouple 
in the exhaust path, but not touching the ceramic matrix of the 
converter.  It's probably an inch away from it, though.. so hard to say 
if it's very hot and radiating extra heat into my reading..    I 
adjusted my Spica on a friend's exhaust analyzer.. think I'm running 
about 1-1.5% CO now, but it may be leaner than that in normal on the 
road operation..  Was reading about 3%, and it felt a bit more solid then..

Waiting on getting a WBO2 sensor and controller, then I'll be better 
able to know where I'm at... so this is playing around and curiosity 
satisfaction till it gets here.

Jon
77 Spider
Irvine, CA
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