 Exhaust Temperatures?, Any idea what exhaust temperatures should be? |
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| LotusJoe |
 Apr 12 2010, 02:29 PM
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#1
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Europa Twink Driver  Group: Members Posts: 406 Joined: 30-November 09 From: Southern California Member No.: 11,085 Region Association: Southern California  |
Has anyone ever measured the exhaust pipe temperatures at the point where they bolt to the heads? I used my Ray-tek gun and got temps from 600 to 700 degrees. Not sure if that is a meaningful place to measure. (IMG:style_emoticons/default/idea.gif)
   I used to own tug boats with 12 cylinder Locomotive engine - 2000 hp, and it was not unusual to see 900 to 1000 at the exhaust flanges, but I'm not sure there is any correlation between the two types of engines and applications. (IMG:style_emoticons/default/confused24.gif) |
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| McMark |
Apr 12 2010, 05:51 PM
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#2
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914 Freak! Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None |
Pipe temp is not relevant.
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| ME733 |
Apr 12 2010, 06:21 PM
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#3
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Senior Member Group: Members Posts: 842 Joined: 25-June 08 From: Atlanta Ga. Member No.: 9,209 Region Association: South East States |
QUOTE(McMark @ Apr 12 2010, 07:51 PM)  Pipe temp is not relevant. .......................correct......I agree. |
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| Russ |
Apr 12 2010, 06:26 PM
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#4
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Newbie Group: Members Posts: 34 Joined: 31-July 06 From: W. Columbia Member No.: 6,544 |
I have EGT sensors on the headers and the exhaust temp runs about 1400F. But it really depends on how hard you running the engine.
R |
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| McMark |
Apr 12 2010, 06:34 PM
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#5
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914 Freak! Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None |
Russ is right, but to be clear that's EGT not pipe temp. (IMG:style_emoticons/default/wink.gif)
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| LotusJoe |
Apr 12 2010, 07:46 PM
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#6
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Europa Twink Driver Group: Members Posts: 406 Joined: 30-November 09 From: Southern California Member No.: 11,085 Region Association: Southern California |
Thanks Guys, I didn't feel like it was the appropriate place to measure temp. but thought I would ask anyway. I also checked the temp at the head temperature sensor (between #3 and #4) and it is only about 180 to 190 degrees. Does that seem about normal?
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| McMark |
Apr 12 2010, 07:59 PM
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#7
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914 Freak! Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None |
Unfortunately, that temp gun is not really precise enough to measure your engine running temps. The points you're scanning for CHT are on the outer edge of the cooling fins. The temp you're interested in is the temp at the combustion chamber. The fins are made for cooling, so if you're seeing 300+ degrees on the outer edges, then you combustion chamber is literally melting.
You're heading in the right direction, but you need the right tools. The Micro100 EGT and CHT gauges are available from Aircraft Spruce and for about $300 you can have both readings available all the time your driving. |
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