Egt Guage

[SEATCOOBER]

surely as im going gtrs i want to see if the turbo temp is at optimum runing temp, probe is 3cm long screwed all the way in

 

[DPJ]

On thinking about this, you'll only get the temperature of gas coming from cylinder #4 anyway. That's going to be considerably less than the combined temps of 1,2,3,and 4 in the manifold collector.

 

[SEATCOOBER]

the dp is going to have to come off to fit it anyway so might aswell do it when fitting my gtrs do it all in a oner!!

 

[h17och]

yep your right. goes thru to exhaust port

your not looking to get an optimum temp your just making sure you dont melt anything

 

[SEATCOOBER]

surely putting this in the ally blanking plate will not tell me if im melting the turbo though!!

 

[h17och]

no. too far away

 

[SEATCOOBER]

thats what im rearly worried about as its the new bit of kit im adding and neeed to keep an eye on it!!

 

[DPJ]

yep your right. goes thru to exhaust port

your not looking to get an optimum temp your just making sure you don't melt anything

Thanks for checking. I just dug out my 'Maximum Boost' by Corky Bell and it's suggesting that where you might see combined EGT of say 900 degrees C, it might only be 600 degrees off a single port....

 

[SEATCOOBER]

so top of the dp it is then to see correct temps

 

[h17och]

yea thats it. i see about 900 C

 

[SEATCOOBER]

ok cheers when do things start to melt as temp varies with abuse

 

[h17och]

you dont want to see 1000c. i cant say exactly when it melts but i would aim at 900 tops

 

[ibizacupra]

if you get egt's >1000'C then you may suffer exhaust housing distortions, wastegate cracking etc. if post turbine measurement it can be 100-150'C higher pre-turbine remember.

my IHI used to run 1100'C it turns out, and on IHI >900'C and you are toast in the housing dept. they're not good at high temps like some other makes. My hybrid mitsi/garrett has been >900'C in race duty, no housing problems. Usually running 850'C to 900'C with minimal off throttle spikes to >900'C

That and the wideband gauge are two I always make reference too.. health check.