Thread: Brian Hofer tranny

Matt it apperars that you have an issue with the tv limit valve or tv valve causing excessive oil pressure to enter the tv upshift oil circuit causing late shifts and higher pressure at the line bias valve resulting in firm shifts at short throttle angles.This problem SHOULD be easy to fix.First thing I recommend you do is take off slow and note 1/2 shift rpm.Then disconnect the cable and take off slow and with the same throttle pressure and...

Quote: Originally Posted by matt94z Can I just unplug the solenoid to see if that is causing my problems? yes

I just wish I knew WTF the trans builder did that caused the problem in the first place. It HAD to be something stupid and obvious, since he called me withing 40 minutes of dropping the trans and leaving his shop. I wonder if he had the pump gasket in wrong or the pump bypass was stuck or something.

There was a case where I restricted feed to the point that I had 0 measured pressure on the cooler line and still had 1 quart in 20 seconds. This was on a transmission dyno. It was a C4 transmission.

Quote: Originally Posted by Turbo6Smackdown So how do the lockup stockers survive over 200,000 miles of wot blasts? Because you can fit a much larger clutch in a 12" converter vs a 10" converter. To make the smaller diameter clutches hold, you have to use more of them.

Quote: Originally Posted by Dr.drivability Brian, just trying to get ideas. You did an awsome job on the trans!!! I just think I'm missing something. I really don't think the tv cable itself is the issue, but I got one coming. I will try it first. Dave, You need to give people all the info possible so they can diagnose the issue properly is what I am throwing out here. The way it reads, you installed a new motor, and poof, it...

Quote: Originally Posted by jaymaechtlen I'd think the trans is happier at a constant temperature. I think the fluid should go through the external cooler, then the radiator heat exchanger. That way, you dump the highest temp to the outside, then if it is still hotter than the water supply temp, you cool it further. Doing it the other way puts more load on the radiator, which you don't need in hot weather. fwiw Jay That was my...

Im still up in the air on what converter I want but have a chance to buy a 5 disc that will be sent in for rebuild for me. In searchs I found that they may have cured the rattle at idle in Park. Is this true? I assume a rebuilt one is gonna be like new but I dont relly want that rattle box if its still there. Thanks for any help.

With this clutch pack you are better off with more clearance than less. There is relative movement between the clutches and steels in the forward gears so any way to reduce drag would be benificial. Allan G.

Take care Bruce and wishing you a speedy and smooth recovery.