clunking transmission

Drjonnycatbiscuit · **Joined:** Wed Oct 08, 2008 9:31 pm **Posts:** 40

Not having had one of these guys before, I've noticed a bit of what I can only describe as "slack" in my transmission.

When coming off the throttle in gear there is a noticeable "clunk" as the wheel speed overtakes the transmission speed, and vice versa when accelerating again.
Happens in every gear, so not the gearbox I don't think.

Is this normal?? :roll:

tr7v8 · **Posted:** Mon Dec 15, 2008 9:37 pm

There is quite a lot of play in the 944 trans, if you take the boot carpet out & drive with the seats down it'll sound like the gearbox is about to fall out!

However there is a failure mode in the clutch whereby the hub breaks up & creates a clonk noise.

First shot is to check the gearbox oil. They must NOT be run with a low level it will knacker the box, preferably change the oil for fresh stuff & preferably Swepco from Berlyn as it'll imrove the shift & cut the racket. Whist under there check all the driveshaft bolts with a torque wrench as they can come loose. If any are loose, either locktite them & replace & tighten, or better replace with new 'uns.

Richy_S · **Posted:** Mon Dec 15, 2008 10:43 pm

I would check the driveshaft UJ's first.

Rich

Li Moo Bai · **Posted:** Tue Dec 16, 2008 8:43 am

I suspect the clutch is failing in time -honoured fashion.

MisterGT · **Posted:** Tue Dec 16, 2008 9:54 am

Sounds like the clutch to me as well as mine was doing something similar until the clutch was replaced.

Drjonnycatbiscuit · **Joined:** Wed Oct 08, 2008 9:31 pm **Posts:** 40

Thanks for the suggestions folks - I'll try the obvious ones first (the UJs, and bolts) - how much is a clutch likely to cost me?

John

MisterGT · **Posted:** Tue Dec 16, 2008 3:08 pm

Drjonnycatbiscuit wrote:

Thanks for the suggestions folks - I'll try the obvious ones first (the UJs, and bolts) - how much is a clutch likely to cost me?

John

You dont want to know

Drjonnycatbiscuit · **Joined:** Wed Oct 08, 2008 9:31 pm **Posts:** 40

MisterGT wrote:

Drjonnycatbiscuit wrote:

Thanks for the suggestions folks - I'll try the obvious ones first (the UJs, and bolts) - how much is a clutch likely to cost me?

John

You dont want to know

uh...yeah...I do... :bounce:

Someone tell me please. Either just supplied or supplied and fitted; and estimates will be fine!

MisterGT · **Posted:** Wed Dec 17, 2008 12:22 am

Well as you asked (hope your sat down)

I believe the Sachs kit is around £400, but then you may be looking at £300- £400 for fitting.
Kit can be had from the usual sources (Berlyn, GSF etc)
Mine was replaced at the same time as I had a 48k service plus new belts and a lot of other bits (see viewtopic.php?f=25&t=2249) so I cant give a clear price as to labour costs but John Mitchell quotes £795 plus vat fitted.

Drjonnycatbiscuit · **Joined:** Wed Oct 08, 2008 9:31 pm **Posts:** 40

Anyone want to buy a 1984 Porsche 944? Lovely condition... (lol)

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clunking transmission

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