length of exit pipe from flame tube to the turbine

[rickw]

Has anybody experimented with lengthening the pipe from flame tube to the turbo in an effort to cool the gasses a bit?

I was thinking of trying to snake the pipe around to create distance from the flame tube to the turbine as well as making a more axial appearance instead of having a flame tube sticking out like a sore thumb at 90 degrees.

[racket]

NO NO NO ..........why heat the gases only to cool them from lotsa surface area on a delivery tube , as well as a loss of energy from all the extra friction , the sore thumb combustor is "efficient" .

A cool running turbine engine is a whimpy engine , turbines are designed to run at temperatures that the turbine wheel just survives at , not too hot , not too cold , just right .

[rickw]

I've seen cars that run the turbo at the back of the car and it works well. Wouldn't cooler denser air drive the turbine better?

[racket]

Nope , cooler gases have LESS energy , virtually all turbochargers on SI engines have too much hot gas energy going to the turbo, so some loss of energy isn't a problem , it just means the wastegate doesn't open as much .

[rickw]

I'm getting EGT OF 1100F TO 1300F. Is that ok?

[racket]

Fine :-)

[rickw]

Thanks again kind sir.