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Thread Topic: Which clutch assembly do I want? Threaded

   
Date: 7-15-08 07:04
From: carlfriedman View user's profile
Subject: Which clutch assembly do I want?

In an effort to fix the problem of a clutch that will not completely disengage, I'm getting ready to order a new clutch assembly (disc, pressure plate, throwout bearing). Apparently there is one assembly for cars up to 1973 and one assembly for later cars. What is the actual difference and why? My car is a 73 but it's not the orignal motor and I don't know if the four speed in the car is even original, thus the need to find out what the difference is so I can order the right parts.

I had already replaced the hydraulic system which made no difference so clearly the problem has to be in the clutch assembly itself.

carl



Date: 7-15-08 08:09
From: mike in Beavercreek, OH View user's profile Send e-mail
Subject: Presuming your engine has its original flywheel...

check the VIN number on the engine--if it's below 1665200, you need the old style "3 finger" coil spring 228 mm clutch pressure plate. This one goes with the 6 bolt flywheel. If the VIN is higher than 1665200, all the 167xxxx and 257/258/259xxxx VINs, it uses the later style diaphragm 228 mm pressure plate (8 bolt flywheel). Both these style pressure plates use the same disk, but different throwout bearings. Oh--all tii's use this later 228mm clutch.

If you have a VIN from a squarelight car (any others besides those above) you have a 215mm clutch.

And if you have an engine VIN in the 155/156/157 range, that's a 1600 engine.

Any other VINs will be Euro cars, and you'll have to post the VIN for us to tell you which clutch to use.

cheers
mike
_________________
'69 Nevada sunroof--"Wolfgang"--bought new
'73 Sahara sunroof-- "Ludwig"--mine since '78
'87 eta E30 coupe--"Johannes"
+ Fiat Topolini (Benito & Luigi), Renault 4CVs (Anatole, Lucky Pierre, Brigette)...
and Kermit, the Bugeye Sprite



Date: 7-15-08 08:39
From: c.d.iesel in South West Connecticut - Darien = The Right Coast View user's profile Send e-mail
Subject: Aasuming your engine has its original flywheel...

. . . IN LIGHT OF THE ABOVE FACTS - AND the
history given how some hacks operate?,
- remove the trans, inspect and measure
the clutch parts FIRST before ordering any parts.
ADD a piliot bearing to that shopping list also.


Everyone is just ASSUMING untill you have the old parts in hand.

_________________
1976 BMW 2002 #2743711(sorry I sold it 12/25/06)
1986 BMW R65 650cc twin 19k miles
1964 BMW R27 250cc single 15K miles
2002 BMW 325xiTouring 29k miles
1984 MERCEDES-BENZ W123 300D Turbodiesel-188k miles fein-DIESEL



Date: 7-15-08 08:49
From: carlfriedman View user's profile
Subject: Re: Aasuming your engine has its original flywheel...

I have already pulled the motor. Has the 8 bolt flywheel and the 228 pressue plate with the taller (longer?) throwout bearing. Still no clue why it would not totally disengage, but it did sit for years and years.

carl



Date: 7-15-08 10:19
From: mike in Beavercreek, OH View user's profile Send e-mail
Subject: With the disengaging problem you mentioned...

while you have it apart, check the tranny's input shaft splines for rust and/or crud (clean carefully and lube sparingly IAW the factory manual), and check your clutch hydraulics for leaks, air in the system etc. Either could cause partial disengagement.

Of course, so could a badly worn disk, or rust on the flywheel causing the disk to stick to it. Not uncommon on a car that's sat for a long time.

mike
_________________
'69 Nevada sunroof--"Wolfgang"--bought new
'73 Sahara sunroof-- "Ludwig"--mine since '78
'87 eta E30 coupe--"Johannes"
+ Fiat Topolini (Benito & Luigi), Renault 4CVs (Anatole, Lucky Pierre, Brigette)...
and Kermit, the Bugeye Sprite



Date: 7-15-08 12:01
From: carlfriedman View user's profile
Subject: Re: Aasuming your engine has its original flywheel...

MC, SC and connector hose are all new, I started with that. Flywheel is smooth and shiny with very slight circumferential ridges, just like a well used/abused brake rotor...it will get machined.

carl



Date: 7-16-08 01:47
From: Beaner7102 in Melbourne, Australia. View user's profile Send e-mail
Subject: Re: Aasuming your engine has its original flywheel...

If you do get the flywheel machined, be sure the put the 'step' back in or it will never be right.

Beaner7102
_________________
1971 - 2002 RHD VIN 1653940. Agave (stock with Pertronix & 32/36 Weber) - "Cactus"
1972 - 1602 RHD VIN 1554408. Fjord (with 2L motor - Weber 40/40, 5speed & LSD to come) - "Bluey"



Date: 7-16-08 11:14
From: john12345678
Subject: sit for years

Had a clutch stick on me after a long period of sitting. Turned out that the clutch disc friction material had swollen from humidity. I was lucky to be able to rock the car in gear and eventually break it lose. Drove it for years afterwards on the same "swollen" clutch. Eventually did an engine swap including new clutch and a lightened flywheel. I highly recomend a new clutch and a lightened flywheel.

have fun



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