The Forgotten On

If it isn't slipping in those gears and there is no metal shavings in the oil you drained you wont do any more damage really. It's just the friction material on gear 3 that is toast.

You'll use more gas for sure but that is about it. Still not advisable to drive it for long though.

4664

Thanks for that.
Yeah, I am just weighing my options right now, with timing of what to do, and when.
The 928 is registered as an Antique and I am now considering just driving it "on rare occasions" for short distances until I attempt the rebuild later on in the year.
Let me see if I can clean up the ATF some more....replacing it again.

skpyle

When you replaced the ATF and filter, did you drain the torque converter? There is a considerable amount of fluid in there, as well.

Good Luck!

FWIW, Mark Anderson at 928 International usually has a selection of used A28.02 3spd automatic transmissions. You might be able to find a decent one for the right price.
Something to keep in mind.

4664

Thanks for your reply.

1) I know about the torque converter but have not drained it because a) difficulties in turning the engine to correct position, and b) too worried I will strip/damage/wreck the drain plug and won't be able to drive the car afterward.
Plan is to change ATF several times, and hopefully clear it up that way.

2) Thanks for the 928intl recommendation; they have a rebuilt A22.01. What's the difference between A22.01 and a A22.02?

3) Anyone know what the maximum HP is for this 3 speed? I have more HP than usually found in a 1982.

gazfish

Setting the engine to TDC should get the plug in the right place. If the trans is going to be re-built and the fluid replacement doesnt help you could chuck a bottle of miracle cure like Lucas into it to see if it buys you some more time. Just don’t romp on it in 3rd.

Petza914

The Lucas stuff made a nice improvement in mine. Shifts are smoother and leaks slowed. It's very thick. If dropping the pan to replace the filter and/or gasket, I'd.recommend putting it into the pan before reinstalling the pan, then add the Dexron III through the reservoir and it will mix together over time as it heats up and gets pumped in from the reservoir. I also used Driven AT3 which also seems to have helped in addition to the Lucas as input the AT3 in first and it helped quite a bit even before the addition of the Lucas stuff. PO has been using something like European ATF from Wal-Mart, which wasn't as good. Mine is an 84 4 speed in case that matters though.

skpyle

1) For what it is worth, most of us with automatics take a good hex bit socket, I think it is a 5mm bit, on a 3/8" drive socket, and hammer it tightly into the drain plug. Ensure good engagement of the bit. Then apply force to unscrew the plug, ensuring the bit stays straight in the plug. The drain plug is part number 900 219 010 02, still available for around $8.00. The matching crush ring is part number 900 123 033 20, available for $1.00. A tip is to coat the crush ring with a thin film of PTFE teflon paste, IE pipe dope. It helps the crush ring seal, and reduces the amount of torque required on the plug for the crush ring to seal.

2) To be honest, I do not know. I would ask 928 International, or start another RL thread with just this question.

3) I also do not know this...sorry.


Regardless of what you do, Good Luck!!!

skpyle

Retraction:

2) I remember reading about the applications of the A22.0* 3spd automatic transmissions in the WSM.
Yep, Volume 2, Section 30, page 30-07. A22.01 used in 1980 and on 928 models. A22.02 used in 1978/79 928 models. (seems a little confusing)

Looking at the Tech Spec Book for '78 - '80 928, A22.01 used in Europe and RoW 928's for 1978-1979, and then worldwide for 1980. A22.02 used in USA and Japan 1978-1979 928's. (somewhat less confusing)
Looking at the Tech Spec Book for '81 - '92 928, '80-'84 928S, A22.01 used in 1981 and 1982 928. A22.04 used in 1981 - 1983 928S. (back to being confusing)

A22.01, .02, and .04 all have the same gear ratios. The only differences are in the stall speeds of the torque converters:

A22.01: 1978-79 Europe and ROW, 2400 +/- 200rpm; 1980 worldwide, 2600 +/- 200 rpm
A22.02: 1978-79 USA and Japan, 2350 +/- 200rpm
A22.04: 1981-83 928S, 2500 +/- 200rpm


So, it looks like it all boils down to converter stall speed. Or, in English, an A22.01 3spd automatic would probably work just fine in your 19982 928.

However, do NOT take my word as absolute. Ask other people, specifically experts. I am just a hack hobbyist who has shoveled money into his 928. I read and absorb alot. That's why I know things. Go find the people who DO things.