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Author Topic: Clutch problem  (Read 2165 times)
Martin S.
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Posts: 990



« on: June 05, 2015, 18:59:09 pm »

Yesterday my clutch started acting up on the 68 turbo - original trans. It's got a stage 2 Kennedy and Berg dual friction disk along with a Mexican longer clutch lever from Bruce. I felt engine vibrations thru the pedal when driving, otherwise it was normal smooth when the engine was off. When I looked underneath, I see that the shaft is sticking out of the trans about a quarter inch and I can push it back in. My guess is that a circlip let go inside. Is that about right? How can I prevent this from happening again. I haven't seen this before and I'm thinking it's because of the bigger clutch compared to stock.
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Cal Look white 68 Bug with AJ Sims EFI Turbo 2332. 194hp 240tq @ 5500 rpm 3psi boost.
Neil Davies
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Posts: 3438



« Reply #1 on: June 05, 2015, 23:07:56 pm »

Could be that a weld has failed on the release arm, one of the pair that supports the release bearing. I've had that with a stock clutch, let alone a stage 2!
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2007cc, 48IDFs, street car. 14.45@93 on pump fuel, treads, muffler and fanbelt. October 2017!
Martin S.
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Posts: 990



« Reply #2 on: June 08, 2015, 17:33:16 pm »

If that was the problem, would the car still be drivable? The clutch still works ok on my car, but it was a vibration thru the clutch pedal now, otherwise all is normal.
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Cal Look white 68 Bug with AJ Sims EFI Turbo 2332. 194hp 240tq @ 5500 rpm 3psi boost.
Erlend / bug66
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SCC Event


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« Reply #3 on: June 08, 2015, 19:18:04 pm »

Pull the engine and have a look.

If it's the old type circlips, I would buy the HD ones, with an extra loop. Much harder.


You can even safety wire it to the shaft. Drill a small hole, and twist some safety wire around the circlips.
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The '67:
10.626 @ 132mph, SCC 2016
10.407 @ 134mph, SCC 2017
10.221 @ 135mph, SCC 2018

The '59:
Not yet..
Martin S.
Hero Member
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Posts: 990



« Reply #4 on: June 08, 2015, 21:09:45 pm »

I'll pull the engine, but I want to be ready with parts if possible so less downtime. I was thinking of trying a spring center disk this time to see if I can get rid of the last little bit of chatter with this setup (it's a daily driver). I figure I'll need a HD shaft, HD springs, new TO bearing and maybe a new disk this time. Does the HD shaft commonly available use two circlips instead of one to help stop the shaft from moving out?
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Cal Look white 68 Bug with AJ Sims EFI Turbo 2332. 194hp 240tq @ 5500 rpm 3psi boost.
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