Does any one know what the EGTs are for pre and post exhaust tubine under WOT on a single turbo 13B-REW? Specifically, I'm looking for a close approximation of the temp delta to set my dual pre-turbine thermocouples.

 

Bueller....

 

you should find some good info on this topic if you do some searching.

A basic rule of thumb is approximately 900 C before the turbine. After the turbine you should be at around 800 C or so depending on how far away you mount your thermocouple from the turbine. I have no experience with EGT temps, this is just what I have read in past postings on this topic.

 

Thanks Silver7!

Anyone else want to pipe up with their inputs. This will be my last bump; subsequent learning will be from my dual pre-turbo EGT setup.

 

I see approx 780 deg C post turbo on my Greddy gauge. I've heard the probes melt pre turbo..

 

If it's a K type thermocouple, it should be good to 1200-1300 degrees celsius, so I would not think they'd melt. Guess I'll find out in the near future. Also the cumulative failure may not necessarily be tied to the catastophic failure modes (in my best laymen's terms.)

 

No idea on the probe, its the supplied Greddy one.
I've heard from numerous sources that pre turbo is a BIG no'no on the prob as they melt and go through turbine.. which was a bummer as i wanted the temp pre turbo.. though not game enough to see whether it was true or not!

 

I had an old probe in my manifold pre-turbo and let's say it was a bit shorter than it should have been :-) This is a GReddy unit. I have a new one in the same spot however as it'll respond too slowly behind the turbo. I've heard 4" behind the turbo should yield temps in the 700 degree range but it all depends on your setup.

 

When I had the thermocouple 6" downstream of the turbo, it ran about 820 under max blast and 720-750 at lean cruise.

Actually this discussion has me investigating Inconel K-type TCs that would preclude some of the possible damage discussed. I'll share once I come to a conclusion what will work with my HKS gauge.

 

Sorry, shouldn't that be the other way around?
My cruise EGT's are usually at around 800, but my WOT EGT's are normally low 700's...