924Board.org

TajMan

My '87 924 S's clutch release bearing always made noise when I pressed the pedal ever since I bought it, but it wasn't bad and never got worse.

I just did the headgasket and timing belt, and now the noise is much louder when I push in the clutch pedal! I'm surprised it got so much worse from just sitting 6 months or abouts.

RockAuto has a Timken release bearing #614132 for $120

Is that part any good, and I suppose the cheapest way to fix my problem?

When I have the clutch all apart, I would take in the disc itself to a local clutch shop I use who will rebuild it like stock for cheap, that way I have a new disc and a new TOB that should keep lasting.

How many hours am i looking at to do a clutch job? Am I right in remembering, removing the rear transmission mounts to drop the trans and the whole torque tube lower will give me enough room to get to the clutch?
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'87 924 S

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

The 924S is the same as an early 944:

http://www.clarks-garage.com/shop-manual/clutch-01.htm

So about 16 hours and I'd replace get a new clutch kit so that you don't have to do it more than once. Don't forget the pilot bearing as well.
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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

Others have successfully used spray lube to quiet an ornery TOB. Do a search. Also, follow clutch inspection procedure from Clark's for long term planning purposes.
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Toofah King Bad

WeiBe (1987 924S 2.5t) - 931 S3

TajMan · Posted: Thu Feb 06, 2014 2:20 am Post subject:

I'm not 'doing it more than once' I am selling the car, just trying to get it into normal operating range first.

I'll search about TOB lubrication, thx

what a nightmare, it never ends,
my custom exhaust, which I just spent much time fixing, is all one piece and can not be removed from the vehicle without cutting it in half,
FML
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'87 924 S

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

Why would you do a custom exhaust for a 924S when you could have just ordered one for a 944?

Or if you had to do a custom exhaust, why wouldn't you put in some removable sections? Since you know that is usually the first step in many of the maintenance items under the car.

Just the cut the pipe in a couple of spots where it is straight and put some of these clamps on it:

http://www.summitracing.com/parts/wlk-33222?seid=srese1&gclid=CIrViPu5tbwCFSFo7AodNyMAhw
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Stefan
1979 924 Carrera GTS (clone-ish)
1988 944 Turbo S (Silver Rose)

TajMan · Posted: Thu Feb 06, 2014 3:26 am Post subject:

I didn't do it, I bought the car that way it already had a 3" exhaust!

I added a cat converter, and I fixed a section in the rear that went over the rear axle and rubbed a hole through the pipe when suspension was fully compressed! But it never had any flanges it was already one-piece, and I didn't add any myself.

I wonder if that exhaust coupler would make a good seal all the way around? maybe
my other option is to weld two flanges on where I cut the pipe in half for a regular gasket in-between.
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'87 924 S

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

3" exhaust? What the.... Some people

Yeah, some 3-bolt flanges would work, but would be a bit harder to install since you have to get the clocking correct.

However, those clamps do a good job of sealing provided the pipe is fairly round and clean and it can be done fairly quickly.
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Stefan
1979 924 Carrera GTS (clone-ish)
1988 944 Turbo S (Silver Rose)

edredas · Joined: 09 Dec 2004 Posts: 861 Location: Charlotte, NC

I realize that you're selling the car, but I would try to get stock exhaust. That 3" is way too big for the N/A and bigger isn't better. You can lose a lot of hp with the wrong pipe.
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'84 944 -White, Brown interior
'84 944 -Red, Automatic
'86 944 -Garnet, Fully loaded, Koni suspension
'87 924S -Red, 300hp 951 swap
'87 924S -Red, Project Car
'88 924S -Red, Daily Driver

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

edredas · Joined: 09 Dec 2004 Posts: 861 Location: Charlotte, NC

I was thinking, he could probably pick up a used one off a junker for $50 if he didn't want to put much money into it. I agree that some might think it's a bonus, but it's would probably be a day and night improvement, and definitely worth fixing, IMO.
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'84 944 -White, Brown interior
'84 944 -Red, Automatic
'86 944 -Garnet, Fully loaded, Koni suspension
'87 924S -Red, 300hp 951 swap
'87 924S -Red, Project Car
'88 924S -Red, Daily Driver

ideola · Joined: 01 Oct 2004 Posts: 15550 Location: Spring Lake MI

Those band clamps are not intended to seal a cut section of pipe, and they WILL introduce an exhaust leak if used in the manner described because the band does not make a complete circle around the cut. They are intended to seal a "slip joint" where the end of one of the sections of pipe is expanded so that it can slip over the adjoining pipe.

So what you should do is cut out a 12"-18" section of straight pipe as close as possible to the downpipe connection, and then replace it with a new 18"-24" section, where the extra 3" on each end can be expanded to slip over the remaining pieces of the exhaust. This will allow you to properly seal the exhaust using the band clamps, and also separate the rear section from the down pipe for servicing.
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erstwhile owner of just about every 924 variant ever made

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

Worked for me just fine, but YMMV.
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Stefan
1979 924 Carrera GTS (clone-ish)
1988 944 Turbo S (Silver Rose)

ideola · Joined: 01 Oct 2004 Posts: 15550 Location: Spring Lake MI

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

Yeah, I'm not disagreeing with you about doing it "right" as it was obviously done wrong to begin with.
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Stefan
1979 924 Carrera GTS (clone-ish)
1988 944 Turbo S (Silver Rose)

TajMan · Posted: Thu Feb 06, 2014 8:22 am Post subject:

'done wrong' was the first guy who did it and a. didn't install a cat b. didn't install flanges for removal

I fixed things that already needed fixing, I just didn't go to the extent I could have the first time I was welding on exhaust.

I'm sorry I didn't want to dispute more with you guys until I double checked, none of the exhaust is 3" my mistake!

This is a very good and cheap 'race' exhaust for this car, and I don't believe the diameter is too large. Yes it was 'pieced together'.

Diameters are 2 3/8" for much of the pipe, 2 1/2" universal high flow cat converter, some re-used mandrel bent curves that are 2 3/4" at the largest, and an aftermarket muffler.

Works well! Especially the more you rev, sounds a bit race but its deeper now and way quieter than it was before with no cat and a bad leak pre-muffler.
Low rpm throttle response is not the best, I suppose that could be associated maybe with the larger than stock exhaust?

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'87 924 S