[DeTomaso] Clutch help
John Taphorn
jtaphorn at kingwoodcable.com
Fri Jun 25 19:47:44 EDT 2010
Tom
You require more clearance. A long throw covers up a lot of adjustment
problems. If you would like, send me a pic of the slave attachment to the
fulcrum on the clutch lever and I'll offer an opinion on the setup.
JT
----- Original Message -----
From: <tmshinro at aol.com>
To: <detomaso at realbig.com>
Sent: Friday, June 25, 2010 6:24 PM
Subject: [DeTomaso] Clutch help
>
> First I want to thank everyone that sent me suggestions. I'm still
> trying to figure it out but I have a couple more questions.
>
> I started the car the next morning to move the car forward in my garage
> after I experienced clutch drag the night before when I pulled the car in
> the garage . Everything worked fine; I was able to shift into all gears
> while stationary with the engine running. When I depressed the clutch
> pedal I could "feel" the clutch disengage well before the bottom of the
> stroke. The clutch engaged about half way up when I pulled the car
> forward and totally disengaged when I pushed the clutch in when I stopped.
> I didn't take in out because I know I would see clutch drag after 10 to 15
> minutes of driving based on numerous prior test runs.
>
> Here's my question - I measure 0.020 inches of clearance between the
> clutch disk and pressure plate. I don't see any separation between the
> clutch disk and the flywheel, but when I move the car by hand with the
> clutch pedal depressed I can see the clutch disk move between the flywheel
> and pressure plate. Should I be seeing measurable separation at the
> flywheel as well as the pressure plate? From what I have been told I'm
> don't have as much separation as I should (0.020 vs 0.030), so I'm
> wondering if things are expanding when hot and consuming what little
> clearance I have. Unfortunately, I can't get anymore clearance unless I
> use up all my free play (which I've cut down to about 0.060 inches). Is
> there enough heat/expansion between the flywheel/clutch/pressure plate to
> make a difference?
>
> Also I should mention that the clutch master I installed was one I bought
> 10 years ago from Collectors Choice. The MC sat in my tool chest with the
> outlet plugged the whole time time. I live in Iowa so there were plenty
> of humid days that the MC would have seen in my garage. I disassembled it
> prior to assembly and the bore and seals looked good and I could tell that
> the seals were tighter that my old one when I manually pushed the push rod
> into the bore. I took the MC out a second time to measure the pushrod and
> did not see any fluid leaks in the rubber boot. However, when I bled the
> system, the fluid that came out of the bleeder looked clear through the
> plastic tube I used but was dark once it was collected in a plastic
> bottle. Is it possible that the seals could have deteriorated causing
> blow by? Would it make sense that blow by would get worse after cycling
> the clutch for 10 to 15 minutes? The fluid in the reservoir is clear.
>
> Unfortunately I didn't think about measuring the bore of the new MC and
> comparing it to the old. I'm assuming they are the same, which if they
> are, baffles me because I never had clutch problems before this.
>
> The battle goes on.
>
> Tom
> #5186
>
>
>
>
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