hks cast manifold question
#3
We have customers with over 500rwhp running the HKS manifold with the Tial 44, no issues.
We have not experienced any creep issues even at very low (8psi) boost levels, where it is more likely to happen. Higher boost (20+psi) does not usually result in creep issues.
We have not experienced any creep issues even at very low (8psi) boost levels, where it is more likely to happen. Higher boost (20+psi) does not usually result in creep issues.
#4
"Elusive, not deceptive!”
Also no creep.... And mine lasted 12 years with egt temps to 1100*C .
My divided garrett 1.0 turbine housing burned out first.... about two years ago.
Great "factory like" dependability.
Barry
My divided garrett 1.0 turbine housing burned out first.... about two years ago.
Great "factory like" dependability.
Barry
#6
Rotary Motoring
iTrader: (9)
My theory is the slot between runners on the manifold to turbo flange is there to protect against cracking from severe pressure differentials between runners. The pressures equalize through that passage.
I don't think this is a problem if the divided manifold has individual wastegates or even a single wastegate with long equal length runners that equal the length from port to turbo, but it is a problem when runners share a single wastegate with short/unequal wastegate runner lengths.
I don't think this is a problem if the divided manifold has individual wastegates or even a single wastegate with long equal length runners that equal the length from port to turbo, but it is a problem when runners share a single wastegate with short/unequal wastegate runner lengths.
#7
"Elusive, not deceptive!”
My theory is that since the divider is the hottest part of the manifold... being heated from both sides.
It would tend to grow leading to warp (and crack as TII indicated).
The T4 divided housing grows and cracks there.
It would tend to grow leading to warp (and crack as TII indicated).
The T4 divided housing grows and cracks there.
Last edited by Barry Bordes; 03-23-15 at 06:57 AM.
Trending Topics
#9
Rotary Enthusiast
Interesting, I would assume it would not be so great for use with a divided turbine housing because the gas is going to go through that hole, and run into the divided flange part on the divided turbine housing potentially increasing wear.
I also thought it may help controlling boost if one does use a divided housing turbo on it.
I also thought it may help controlling boost if one does use a divided housing turbo on it.