I started using Dexron VI for the power steering about a year ago. There is a noticeable difference in the amount of effort needed. Also switched to the same stuff in my Chevrolet pickup and noticed an improvement in shifting. I'll give it a go the next time I service the transmission on the 928.

 

Doc is right about the flexplate on the TC pulling it away from the rear of the housing just enough to not rub......the tech that rebuilt my trans showed me that when I picked up mine......the tolerance IS that tight.....

 

Thanks Wally!

 

Thanks, Dan. The tranny is mounted but I need to finish the installation sundries before I can fire it up. Colin's idea to do a "bench test" with some kind of honkin' drill was clever, but I think you are right that it would take a monster drill to spin it up. His point was to see if it still leaked or made bad noises before doing all the work to reinstall it. A poor man's tranny dyno. I could have hauled it over to Burlingame and had the shop there dyno it for $150, but I'm just too impatient and depleted of funds at the moment. So, I did the best I could short of a complete teardown. Tomorrow I will try flushing the way you suggested before I fill and fire it up. I'm going to pull the pan again too and partially disassemble the valve body for a flush as well. I only found one piece of metal and a small amount of "grit", so I'm not all that worried, but this kind of grit, even in small amounts, can cause the shift valves to hang. So, the valve body deserves a little washing out. Anyway, I should know the truth tomorrow. Will it leak or will it not leak?

 

Goodluck Bill i hope this trans works as it should for a very long time.

 

I just caught up on this. Sounds like you are doing great!

Yell if you have any questions. I'm in the shop. this week.

 

I don't think so. If the convertor is not engaged on the oil pump "tabs" completely, it will shear those tabs like the are made from glass. Seen this once or twice.

There's not enough dimension to miss the tabs, have the convertor sit "on top" of the tabs, and bolt the housing on, without this happening.

 

Thank you, Greg. I would have much preferred to have come down to Anaheim and had you look over my shoulder, but I just up and ran with it myself. I found the clearance checking a bit of a challenge with my amateur tools, but I think I got it. The new parts from George's donor tranny look much better than mine. I see no reason to expect it to malfunction, but I won't know until tomorrow. Thanks again for your suggestions and support.

 

Bill,

Good luck. Think of it this way - you have already learned a lot.

 

Yes, I have gotten more familiar with some of the inside of the tranny; I'd say about 20%. But I have seen things I don't understand, like what caused the burning and scoring inside the rear hub of the primary pump. There's nothing that would seem to be able to rub against it, at least on the inside beveled area where it is messed up. The snout end is supposed to be .02-.03" away from a bearing sitting inside the K-1, and it looks like it was. The end is not discolored and the bearing appears to be OK. Oh, well. I hope that my careful assembly remedied that.

If I remove the valve body for cleaning, I may not get it back together today - I don't have the gasket(s). There is a TransTec outlet in San Leandro that I may visit today. They are backordered on the complete tranny seal kit.

 

I've been watching this thread and the previous with great interest and i'm pullin' for ya, Bill! I've RnR'd my transmission 2x and i know what it is you're going through. i had the same leak from the front grate that got worse after i changed the fluid and filter (must have been a thinner formula than what was in there). Anyhow - tried to reseal the front pump o-rings, new pump gasket, and TC carrier bearings in the bell (WYAIT), put it all together and it was worse. I found a good working used tranny from a totaled car, same year, recently running and working - dropped out the original, put the "new" used one in and have been on my way since. 2nd time always goes faster!

Very cool inner workings that i don't think i fully understood the first time around. Actually, the idea of opening one of those up again to replace any parts gives me the heebeejeebees. Sounds like you have all the right karma happening, wish i were closer to lend a hand. Stay methodical (as i've seen you are) and hopefully all will work.

 

Mostly ready for the final test tomorrow. Everything is back in and torqued. The suspense is building.

 

So..go start it.


Very glad you got this far Bill.

 

I wish it goes well and that your Porsche soon is twin screwed again!

Happy new year!

 

xcellent......gr8 way 2 start the New Year