Hi,

I just pulled the tranny and removed the clutch. My car has tons of records with it from 175k miles. What it doesn't have was any record of the clutch having been replaced.

Could someone confirm if this (photo below) is the standard Dual Mass Flywheel? The clutch disk is 8.5mm thick and 2mm to the rivets. The clutch is not rubber centered. That and pressure plate are Sachs brand. The flywheel and pressure plates have some spotting and I assume the flywheel will need to be machined. There's no evidence of fluids leaking from the tranny or engine main seal.

Thank you for your input!
Dan J.

 

It looks like the same flywheel I have. Mine is the LUK style dual-mass model. In hindsight, when I changed my clutch, I should have switched to the lightweight flywheel. At this point, I will wait till I have a reason to pull the engine again.

 

yeah, it's the stock DMF/clutch items

 

Here are some pics of mine while the engine was out. I needed to replace the guide tube. If you clutch was replaced at one time, chances are the guide tube was too.
FYI... Judging from the amount of material on your clutch disc, that thing still has a fair amount of miles left on it.
Bill

 

Yes as the others have said it looks like the stock DMF. Though ther is some useful life left on the disk, you don't really know the disposition of the flywheel.
You have it all apart and could save work later on by replacing parts now. The LWF is the greatest, and you will never have to worry about it failing. I just did one a few months ago and love it.

 

Bill-
ignorance topic: Guide tube -- that's only on a C4?
[me going off to the PET comics]

EDIT -- Never mind, found it. Guide tube, # 15:
guide tube.gif


What I thought, too.
(What? -- 0.3 mm (0.018" !!) remaining clutch material thickness warrants a clutch change? Lots of theoretical life left in those pictures.)

Can this clutch be used, again, should the plate be changed? Or is that false economy?

 

Thanks much for the confirmation. I'm doing a bunch of 'while you are in there' work anyway.

If I were to change to the LTW flywheel, would that require changing any other clutch related parts parts in order to change the flywheel?

Last question, is there some kind of motorsports/RS transmission mount available to replace the large rubber mounting location at the nose of the trans?

Again, thanks guys,
Dan.

 

I do know that mny other parts do go with the LWF. Since you are in Oregon I would suggest you look up Jeff Gamroth at Rothsport (no affiliation) in Tualatin. He would be the guy in your area with all the answers.

 

I am not suggesting keeping the current used clutch... just curious why you have it apart for a clutch change since there is a decent amount of material left on it. Were there issues? You might as well replace it since it is out.
Be advised... you are on the slope.

 

Good suggestion on contacting Jeff about options. His shop did all the suspension and misc refresh work on the car a few years ago.

Yes, I'm on the 'while you are in there' slope for sure. Here's why I took all this stuff apart...

This is my first G50 car. I've had a couple 915 gearbox 911s previously. Since buying the car 2 years ago I've thought the gearbox was a little more notchy than I'd expected the G50 trans to be. Note: the motor was rebuilt by a shop on the east coast a few years ago at 155k miles. The records from that (and previous records) don't mention replacing the clutch. So until yesterday I had no idea the condition of the clutch components. I do some track days with the car in addition to daily driving and wanted to make sure I wasn't going to do any damage to the gearbox or flywheel if indeed the clutch was toast.

Note, when the car was in for a refresh and suspension redo at Rothsport, they replaced both master and slave cylinders as well rebuilding the pedal bushings. Also, I bled the system. So, I could rule out those items.

Since the shifting was a bit notchy and I already had the thing up in the air to do other things (replacing the main oil line from the case to the oil filter housing...it has been dripping) I dropped the tranny out to see if the shifting issue was due to a worn out clutch disk.

So, I think at this point I just have to decide which items to replace. I'll also put different gear oil in the trans to see if that helps with the shift feel.

Also, while it's all apart, I may change the shift linkage joint (not sure of exact term, it's the little joint where the shift lever mates up with the front of the trans) which seems kind of sloppy. I also have to do some research to see if there's any kind of stiffer bushing to use at the nose of the tranny.

Again, thanks everyone for your input. This is all really helpful.

Dan.

 

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