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944 Junkie
MJS951's Avatar
Join Date: Dec 2007
Posts: 924
968 clutch pedal resistance continues

Sorry if you have read this before, but I wanted to reach out one final time for info.....

My 968 has an incredibly stiff pedal. It must have started out previous to me owning the vehicle, as the firewall had a number of cracks in it. As the clutch pedal was depressed, the master cylinder moved forward significantly... obviously not good.

After patching the firewall, re-installing the master cylinder, replacing the fork pin and bearings, and havng the system professionally bled, the pedal continues to be way too the point the firewall will fail again unless additional bracing is provided.

This has been an east coast car all its life, and I have heard of others on the east coast with this similar problem, however no one has provided info as to how they may have overcome this problem. One suggestion indicated the welded patch may have put the clutch master cylinder out of alignment, but I really do not think this is the case due to the fact there is no rubbing or binding of the pedal or actuator rods throughout the pedals travel. The pedal moves smooth throughout its travel with even pressure... just way too much resistance.

Any thoughts other than the ones previously posted?

'86 951 : BSA 215s, Konis w/ 250# Welts front, KLA Coilovers rear, SFR 3" SS Catback, TestPipe, Pauer Tuning Fuel Lines, LoTek A-pillar w/ Autometer Boost/Water Temp
Old 12-07-2007, 09:41 AM
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Join Date: Jun 2003
Location: New Haven, CT
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IS the clutch and pressure plate stock?
1986 951, Stock for now.
]87 924S Gaurds red- SOLD after 11 years of ownership
Old 12-07-2007, 12:09 PM
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Join Date: Mar 2004
Location: Leesburg, Georgia, USA
Posts: 1,558
The cracking firewall is only a result of the stiff clutch action.
What normally happens is that the needle bearings on the release fork shaft siezes due to clutch dust and grease drying up.
Overtime, the needle bearings dig in to the shaft and siezes thus resulting to stiff clutch pedal.
1993 964 C2 still makes me smile
1996 318ti (280k miles)
2011 Silverado for hauling (32k miles) - SOLD
2018 Suburban Z71
Old 12-07-2007, 12:32 PM
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Join Date: Jun 2006
Location: O.C. CA
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are you sure it's too stiff? have you compared it to other 968s

you are in jersey - call pete at rs barn
Old 12-07-2007, 02:25 PM
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