Quote Originally Posted by joecar View Post
So replacement trans is running at cool temps

(was the problem with the overheating trans ever discovered...?)

It has not been torn down yet, but it has already been back to the builder once for this issue. Took 6 months to get it back and it still had the same issue.

Possibilities? Full time 210 psi line pressure causing something to drag or diverting fluid from the cooling circuit? Mismatched parts causing a lube issue?...but this is an experienced builder. An internal blockage somewhere, or stuck valve?...would the trans shift properly in that case? I didn't log any internal slip. A problem with the trans brake?...I believe the new unit uses the same setup though.