| Sort of GMCMH related [message #370645] |
Thu, 06 October 2022 12:04  |
kingd
Messages: 592
Registered: June 2004
Karma: 2
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Senior Member |
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I'm involved with an anature Road Racing Association, somewhat like Canada version of SCCA. At least
one of our members has a GMC MH (content)
A person with a VanDieman Formula 1600 ( Formula ford) suddenly ha a clutch problem.
When the clutch pedal is pressed, it stays on the floor and clutch won't engage,
Theyv'e tried everything they could think of including lots of new parts
The engine is a Honda Fit like allowed in SCCA. Flywheel, clutch disc, presussure plate
all stock Honda Fit. Anyone with a Honda powered race car or Honda Fit road car had this problem ?
I know, not much GMC MH content but one of the guys in the class has a GEORGEOUS 26'
GMC MH
DAVE KING
lurker, wannabe
Toronto, Ontario, Canada
[Updated on: Thu, 06 October 2022 15:41] Report message to a moderator |
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| Re: Sort of GMCMH related [message #370647 is a reply to message #370645] |
Thu, 06 October 2022 12:41  |
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Matt Colie
Messages: 8547
Registered: March 2007
Location: S.E. Michigan
Karma: 7
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Senior Member |
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kingd wrote on Thu, 06 October 2022 13:04I'm involved with an amature Road Racing Association, somewhat like Canada version of SCCA. At least one of our members has a GMC MH (content)
A person with a VanDieman Formula 1600 ( Formula ford) suddenly has a clutch problem.
When the clutch pedal is pressed, it stays on the floor and clutch won't engage, ' GMC
Theyv'e tried everything they could think of including lots of new parts
The engine is a Honda Fit like allowed in SCCA. Flywheel, clutch disc, pressure plate all stock Honda Fit. Anyone with a Honda powered race car or Honda Fit road car had this problem ?
I know, not much GMC MH content but one of the guys in the class has a GEORGEOUS 26' GMC MH
Dave,
I had numerous go-rounds with hydraulic clutches, I have seen this before but more often than that is when the travel will not release the clutch. They both come from the same issue. In your friends' case, the problem is that there is either a serious mis-match of parts or the clutch master cylinder is not venting when the pedal is released. This causes residual pressure in the system and that residual pressure allows the slave cylinder to be pushed over center and the diaphragm can't push it back.
First, Check part numbers. Are that master and slave part of the same set??
Second, Make sure that the return spring for the pedal arm is in place. (Not all have this, but many do.)
Third, Check that the master cylinder is getting all the way home and can vent the system pressure. A quick check is to open the bleed screw at the slave. There should be no pressure there when the pedal is released.
Cheap and dirty fix for today... Put a block under the pedal so it can only go as far as is needed to release the clutch.
Let us know how it goes.
Matt
Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
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| Re: Sort of GMCMH related [message #370648 is a reply to message #370645] |
Thu, 06 October 2022 15:47 |
kingd
Messages: 592
Registered: June 2004
Karma: 2
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Senior Member |
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Replies for Larry and Matt. Thanks for your insight.
I'll pass it on
BTW this is happening on a system that worked fine for more than 2 years and then this "problem" started
To Larry it's a hydralic system with an "annular" secondary cylinder.
(we aren't supposed to say slave any more)
DAVE KING
lurker, wannabe
Toronto, Ontario, Canada
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