800°C Exhaust Gas Temperature!!

[dave Friday]

Hi all,

As above, nearly 800°C. Oil temp 85°C, water under 90°C, boost 5 bar max.
The EGT drops quickly from 600°C to 350°C (at 900 rpm) then takes 5 seconds to drop from 350 to below 300.

Pump timing .95mm
Engine "SB" from a GTD Golf.

Any ideas?
Ta.
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1992 t3 syncro jx 1.6td leisure drive camper van
Now with " sb" engine

[Team WorldTour]

Don't drive it.....
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1990 Feldjäger Syncro AAZ
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[dave Friday]

Good idea!
Have you got any others?
_________________
1992 t3 syncro jx 1.6td leisure drive camper van
Now with " sb" engine

[Wildthings]

Where are you measuring the EGTs? If this is at full load then 800°F doesn't sound that hot to me.

[dave Friday]

in the exhaust manifold where it meets the turbo [800deg centigrade!].
I'm surprised its so high as the max fuel screw still has the tamper proof coller on.
_________________
1992 t3 syncro jx 1.6td leisure drive camper van
Now with " sb" engine

[Zeitgeist 13]

800C = 1472F

That's way too high for my comfort. Under what circumstances are you seeing this high of EGT? Are you sure the gauge is accurate? Your high oil temps may indicate that the pyrometer is indeed telling some sort of story about excessive heat in the engine
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Casey--

'89 Bluestar ALH w/12mm Waldo pump, PP764 and GT2052
'01 Weekender --> full camper
y u rune klassik?

[Wildthings]

Sorry, I missed the 800° was Centigrade, yes that would be awfully hot.

[dave Friday]

85 c too hot?it was 130c before I fitted an oil cooler!
700 to 800c is in top gear up hill,i change down to third gear to bring the temp down of course.
ps I used a test meter to check that egt gauge is correct.
_________________
1992 t3 syncro jx 1.6td leisure drive camper van
Now with " sb" engine

[oceanair]

Hi -- I don't know that it is a problem -- perhaps others can share what they would expect.

I fly airplanes that run on gasoline. 1450F is a normal temperature at TIT, Turbo inlet temperature. CHTs are much more important than EGTs because they cool very quickly and it depends on where you measure them from.
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84 Vanagon Pop Top Conversion from Tin Top, 1970 Ghia - all sweet rides! Love em!
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[Witless Joe]

[mreuter]

above 1600°F you have to expect engine damage. 1450°F sounds reasonable under full load.

[dave Friday]

Thanks all,off to catch a 'plane to the UK.
Will type later.
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1992 t3 syncro jx 1.6td leisure drive camper van
Now with " sb" engine

[dave Friday]

Well...the EGT probe/sensor failed,so I fitted the(exposed tip )sensor that I had been meaning to fit ..
Guess what? EGT now max 450/500 deg c!
Lesson learnt.
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1992 t3 syncro jx 1.6td leisure drive camper van
Now with " sb" engine

[jimf909]

Neato! This is nomination #2 for bump of the month. Thanks for the follow-up. Did you have a good visit to the UK?
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- Jim

[dave Friday]

Thanks Jim ,yes it's nice to visit the uk but I wouldn't want to live there(anymore )
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1992 t3 syncro jx 1.6td leisure drive camper van
Now with " sb" engine

[dave Friday]

Hi all,well the exposed tip EGT sensor failed! So I replaced it but,the exposed tip sensor reads about 250 deg c higher than the enclosed type sensor
Tested by sticking them ( sensors ) in the Gas ring..
Kr.
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1992 t3 syncro jx 1.6td leisure drive camper van
Now with " sb" engine

[Gnarlodious]

I suggest that you are overfueled, possibly because you are not getting enough boost or maybe your oxygen sensor is fouled, or both. My AAZ really gets hot EGT at high elevations when it is overfueling. Apparently the hydrocarbons combust in an oxygen deficit and produce no power but a lot of exhaust heat. 800c is about the max for safety, so take it easy.
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Vanagon ’83 diesel AAZ w/Giles injection, 5spd 4.57R&P+TBD and a '78 diesel Rabbit

[dave Friday]

Hi Gnarlodious and thanks for the advice,I did adjust the wastegate to get the boost up a bit...a month ago I replaced the turbo( £200 Chinese ,looks good )the van runs as it normally does but the EGT sensor is faulty 1.3k ohms between element and casing!
Now the EGT is just over 600deg c ( foot to the floor up hill in third or top gear!)
I now need to repair my boost gauge,and check that the EGT gauge is reading ok( with my new meter)
Kr,Baz
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1992 t3 syncro jx 1.6td leisure drive camper van
Now with " sb" engine

[Abscate]

[dave Friday]

Abscate hi,I agree about the quality? Of the gauges etc,EGT sensors ( the cheap ones ) don't last long..
What I have found is that a £10 multimeter with a temperature setting works well as a EGT gauge,possibily for other sensors..
We live in the mountains at 2350 ft and get some interesting weather,
When the rain in Spain is falling mainly on the plains,up here it's raining golf ball sized hail,dents in your car!! This time of year it's 40 deg c a lot..
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1992 t3 syncro jx 1.6td leisure drive camper van
Now with " sb" engine