924Board.org

dubrict · Joined: 22 Apr 2011 Posts: 150 Location: Horseheads NY

Well I just bought a 79 924 and thus joined this board. Only thing I have to do with it is reconnect the shift linkage to the transmission.

The disconnect occurs at the back of the car, it looks like there is a hex screw missing right where the linkage connects to the top of the tranny. The issue I'm having is that it's in a confoundingly difficult spot to get to and I really don't want to drop the tranny.

Does anybody have any miracle tips on connecting this, and if not, does anybody have any tips on dropping the transmission?

If anybody's interested in knowing, I got the car for $600 and the motor runs great. It could use a paint job but there's no rust.

Rasta Monsta · Joined: 12 Jul 2006 Posts: 11733 Location: PacNW

Picture is worth a thousand. Can you raise the car and show us the linkage where it is disconnected?
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Toofah King Bad

WeiBe (1987 924S 2.5t) - 931 S3

dubrict · Joined: 22 Apr 2011 Posts: 150 Location: Horseheads NY

Yeah, here's the best pictures I could get with my phone. I circled where the fastener is missing.

By dubrict at 2011-04-21

Here's another picture from a little further back if that'll help get a better idea where this is:

By dubrict at 2011-04-21[/img]

Grenadiers · Posted: Fri Apr 22, 2011 11:56 am Post subject:

Looks like a weird alien space ship shot or something. But, I like stuff like that! Bring it on~!
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'83 944 Track car.
'88 924S Track car.
'89 944 Turbo
2004 Winnebago Vectra monster RV
2012 Jeep Wrangler
2014 Kia Soul
2001 Ford F350 powerstroke

dubrict · Joined: 22 Apr 2011 Posts: 150 Location: Horseheads NY

Just went back out and looked at it, I don't think it's happening without dropping the transmission. Any tips on jack stand placement so they're not on the suspension?

emoore924 · Joined: 13 Apr 2004 Posts: 2822

I cut a hole in the floorboard years ago. F'n impossible to get to.

You might want to drop the tranny. There's a procedure for that. IIRC that bolt is conical, so get the right one...

dubrict · Joined: 22 Apr 2011 Posts: 150 Location: Horseheads NY

Rasta Monsta · Joined: 12 Jul 2006 Posts: 11733 Location: PacNW

Don't cut the tub.

First step is to try just lowering the tranny to see if that gets you the clearance you need to get at the linkage. Pull the axles, you can push everything to the right as well.
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Toofah King Bad

WeiBe (1987 924S 2.5t) - 931 S3

fiat22turbo · Joined: 18 Jan 2006 Posts: 4040 Location: Portland, OR

Here's some pictures of what that looks like out of the car:

http://s148.photobucket.com/albums/s10/fiat22turbo/Porsche924/shiftlinkage/

Yep, its tight in the car and the missing bolt is a special one with a conical tip to properly center the joint. You'll want to use loctite on that bolt.

Its in the lower right of this picture:

You can put that bolt in in situ, but you have to be good with your hands and be able to feel your way around without seeing what you're doing. A 13mm ratcheting box wrench really helps. If you can get it started, then you can tighten it up with the wrench. You'll probably have to wiggle the shift linkage around to get it lined up.

Hope this helps and good luck!
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Stefan
1979 924 Carrera GTS (clone-ish)
1988 944 Turbo S (Silver Rose)

Rasta Monsta · Joined: 12 Jul 2006 Posts: 11733 Location: PacNW

Nice post, Stef.

As an alternative to LocTite, you might have the conical bolt drilled for safety wire if you think it can be secured with the room you have.
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Toofah King Bad

WeiBe (1987 924S 2.5t) - 931 S3

dubrict · Joined: 22 Apr 2011 Posts: 150 Location: Horseheads NY

I appreciate all the helpful posts here. But (rasta monsta,) in order to lower the tranny, do I not have to unbolt the suspension? The problem I was having there was I couldn't find a way to safely jack up the car without putting jack stands under some kind of suspension component. Maybe I should just get some larger jack stands.... I'm hoping those big circular spots close to the back of the car are safe jack points?

It also seemed that I couldn't unbolt the torque tube without dropping the suspension, since they felt the need to couple the bolt holding it on with a hex nut on the other side.

I guess there's just no way around the harder work on this one. Stefan, where can I get that bolt?

hope I don't sound like too much of a newbie here, I just get overly cautious with new cars

Rasta Monsta · Joined: 12 Jul 2006 Posts: 11733 Location: PacNW

You can remove the mounts and lower the trans with a jack, probably quite a bit. I don't think you have to touch the suspension.
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Toofah King Bad

WeiBe (1987 924S 2.5t) - 931 S3

dubrict · Joined: 22 Apr 2011 Posts: 150 Location: Horseheads NY

Rasta Monsta · Joined: 12 Jul 2006 Posts: 11733 Location: PacNW

Did you completely remove the rubber mounts? They bolt to the gearbox and to the torsion carrier.

Did you remove the axles?
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Toofah King Bad

WeiBe (1987 924S 2.5t) - 931 S3

fiat22turbo · Joined: 18 Jan 2006 Posts: 4040 Location: Portland, OR

The TT is not attached to the suspension, only the transaxle is via the mounts.

There are two jack stand points just ahead of the rear suspension, should look like the end of a piece of rectangular tubing. I use the frame rail under the doors to raise one side at a time and slide a jack stand under one of the above points and a forward frame rail.

Place a jack on the transaxle and raise it back up to release tension.

Remove the rear portion of the exhaust system to get room to work.

Remove the outboard CV joints, make sure you have the proper bit to take the bolts loose (triple square or "cheesehead"). Tap the bit in the bolt head to make sure it is seated, use a small dental pick to clean out the splines, etc. Otherwise you could easily strip the head and then you'll be pissed...

Remove the two nuts from the bottom of the transaxle mounts and the transaxle mounts altogether.

Lower the transaxle and you should get a bit more room to work with.

Worst case, you'll need to remove the heat shields and bracing under the TT (in front of the rear suspension) to get a little more movement, but then you're only a few more bolts away from removing the entire TT and rear suspension.

The bolt is probably still available from Porsche or one of the online vendors (unless a forum member has a spare they'd be willing to drop in the mail to you) If you can't find one, you might be able to make one out of a metric bolt and a metal lathe (or even a bench grinder/sander if you're skilled in the ways of "bodging")

The part number is: 901 424 229 00 taken from here:

http://www.porsche.com/usa/accessoriesandservices/classic/genuineparts/originalpartscatalogue/

Looks to be around $4.00 give or take.

The part diagrams also give you an idea how it all goes together.

Here's some ideas on how to R&R the TT and rear suspension:

http://clarks-garage.com/shop-manual/trans-05.htm

http://clarks-garage.com/shop-manual/susp-06.htm
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Stefan
1979 924 Carrera GTS (clone-ish)
1988 944 Turbo S (Silver Rose)