Max egt temp
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From: benfleet, essex
if memory serves........correct burn is about 750 to 800 c
could be wrong though
and one thing that always amazes me about EGT's is that low temps can also(as well as high) indictate a lean burn.....when you would think that low means rich and high means lean
Pugo
could be wrong though
and one thing that always amazes me about EGT's is that low temps can also(as well as high) indictate a lean burn.....when you would think that low means rich and high means lean
Pugo
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From: Vosselaar-Belgium
That's what I want to know.
Have been seeing temps of upto 870°C lately and want to know if that would be acceptable or not.
Don't want to risk a meltdown now that we have planned to start building our own house next year.
Have been seeing temps of upto 870°C lately and want to know if that would be acceptable or not.
Don't want to risk a meltdown now that we have planned to start building our own house next year.
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From: benfleet, essex
i think your temps are ok personnally, however i would drop STU@msd a pm and just get him to confirm as all my experiance really comes from 2strokes and although EGT'S shouldn't be any different, i would just get somebody that maps these engines regularaly to confirm........you can't beat experiance so they say
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From: Chesterfield
Originally Posted by Speedy G.
That's what I want to know.
Have been seeing temps of upto 870°C lately and want to know if that would be acceptable or not.
Don't want to risk a meltdown now that we have planned to start building our own house next year.
Have been seeing temps of upto 870°C lately and want to know if that would be acceptable or not.
Don't want to risk a meltdown now that we have planned to start building our own house next year.
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From: London, England
You can't associate EGTs with how rich or lean you are running.
Peak EGT is at 14.7:1 air/fuel ratio, anything leaner or richer will lower the exhaust gas temps. A richer mixture lower's the inlet mixture temperatures, often people confuse exhaust gas temps to that , which is very odd.
Peak EGT is at 14.7:1 air/fuel ratio, anything leaner or richer will lower the exhaust gas temps. A richer mixture lower's the inlet mixture temperatures, often people confuse exhaust gas temps to that , which is very odd.
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From: Chesterfield
Originally Posted by Anh
You can't associate EGTs with how rich or lean you are running.
Peak EGT is at 14.7:1 air/fuel ratio, anything leaner or richer will lower the exhaust gas temps. A richer mixture lower's the inlet mixture temperatures, often people confuse exhaust gas temps to that , which is very odd.
Peak EGT is at 14.7:1 air/fuel ratio, anything leaner or richer will lower the exhaust gas temps. A richer mixture lower's the inlet mixture temperatures, often people confuse exhaust gas temps to that , which is very odd.
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From: London, England
Originally Posted by Cam
At TOTB Keith Cowie was getting very high (950+ EGT) due to a faulty fuel pump causing the motor to run lean so that would seem to contradict your statement. Not having a pop just stating what I was told btw.
EGTs at 17.1 is less than that of 14.7:1 so simply correlating the temperatures to the fuel mixture is absolutely false.
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From: Chesterfield
Originally Posted by Anh
Originally Posted by Cam
At TOTB Keith Cowie was getting very high (950+ EGT) due to a faulty fuel pump causing the motor to run lean so that would seem to contradict your statement. Not having a pop just stating what I was told btw.
EGTs at 17.1 is less than that of 14.7:1 so simply correlating the temperatures to the fuel mixture is absolutely false.
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From: London, England
Originally Posted by Cam
The 950deg EGT was an indication that something was amiss and it turned out to be the fuel pump or fuel pump relay being faulty causing the motor to run dangerously lean.
I don't think people were trying question the risks of high EGTs, its just some people were mistakingly associating EGTs to fuel mixture, which is wrong.
The fuel pump problem you're on about doesnt sound as severe as you like to make it out to be. The car would have died if there was "pump or pump relay fault" or a misfire at least.
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From: Chesterfield
Originally Posted by Anh
Originally Posted by Cam
The 950deg EGT was an indication that something was amiss and it turned out to be the fuel pump or fuel pump relay being faulty causing the motor to run dangerously lean.
I don't think people were trying question the risks of high EGTs, its just some people were mistakingly associating EGTs to fuel mixture, which is wrong.
The fuel pump problem you're on about doesnt sound as severe as you like to make it out to be. The car would have died if there was "pump or pump relay fault" or a misfire at least.
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From: benfleet, essex
Originally Posted by Anh
You can't associate EGTs with how rich or lean you are running.
Pugo
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From: W. Sussex
taken from http://www.sdsefi.com/techegt.htm
pugodon't forget that things are going to be different with a turbo engine that has a restriction in the exhaust
Peak EGT generally occurs at an AFR of around 14.7- 15.0 to 1 on gasoline. This is far too lean for maximum power and is dangerous under continuous WOT conditions. Many people think that the leaner you go, the higher the EGT gets. This is also incorrect. Peak EGT occurs at stoichiometry- about 15 to 1 for our purposes. If you go richer than 15 to 1, EGT will drop and if you go leaner than 15 to 1 EGT will ALSO drop. It is VERY important to know which side of peak EGT you are on before making adjustments. It is safe to say that peak power will occur at an EGT somewhat colder than peak EGT.
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Geert, ive seen the same on mine lately although ive got the tiny 0.48 housing on my T34. Its a bit odd though is ive never seen temps above 820. Then I took it on track and suddenly it peaked at 898 and 901. 
Could I really blame this increase in temp on the fact it was on track or should I seek for other explanations? Think I will invest in a wideband device to check how its running.
Could I really blame this increase in temp on the fact it was on track or should I seek for other explanations? Think I will invest in a wideband device to check how its running.
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Originally Posted by Mike Rainbird
Andreas,
That is what you should expect on track
.
That is what you should expect on track
.
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Originally Posted by Andreas
Originally Posted by Mike Rainbird
Andreas,
That is what you should expect on track.
That is what you should expect on track
.Cheap insurance.
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From: S/E Kent, Thanet
925- 950 is tops b4 turbo.
875-890 is the most you want 1 inch from turbo.
these temps are on ex mani, turbo and down pipe with out heat wrap, if you wrap it all your likly to see 50+ oC on same car.
also gt turbos wont last with temps over 980-1000 oC @ turbo temps.
875-890 is the most you want 1 inch from turbo.
these temps are on ex mani, turbo and down pipe with out heat wrap, if you wrap it all your likly to see 50+ oC on same car.
also gt turbos wont last with temps over 980-1000 oC @ turbo temps.
Originally Posted by chip-3door
Originally Posted by Andreas
Originally Posted by Mike Rainbird
Andreas,
That is what you should expect on track.
That is what you should expect on track
.Cheap insurance.
Originally Posted by markk
Originally Posted by chip-3door
Originally Posted by Andreas
Originally Posted by Mike Rainbird
Andreas,
That is what you should expect on track.
That is what you should expect on track
.Cheap insurance.
Flame grilled lambda...
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