When my 71BGT had this problem, I too hoped for an easy fix. But in my
case, the problem was excessive wear on the pressure plate and the release
bearing. This caused excessive piston travel. Your symptoms correspond.
But I also had a slight squealing sound precede this problem of mine.
If this is the problem, you can get a clutch kit (release bearing, pressure
plate, clutch disc) from any supplier for around $100 or so, but you will
also have to pull the transmission and/or engine.
David
67 BGT
71 BGT
At 11:07 PM 4/9/00 -0400, James Porco wrote:
>Hello all:
>
>I seem to be having a problem with my clutch hydraulics. I have rebuilt
>the master cylinder (Moss kit), purchased new lines, and a new clutch
>slave cylinder (again Moss). I bleed everything fine, and I never get
>good solid pressure. After about ten pumps on the clutch (after it has
>been bleed about 15 times) I loose all pressure at the clutch slave
>cylinder. What happens is that the metal piston in the slave cylinder
>seems to go beyond the housing and the rubber gasket/cup pushing the metal
>piston out gets cock-eyed in the housing. In fact, the last three times
>(I have done this about 5 times already), part of the rubber gasket is
>protruding out of the metal housing with the metal piston cock-eyed in the
>housing. All the fluid drips out via the rubber gasket. This is all at
>the clutch slave; the master slave cylinder is fine.
>
>I have already rebuilt the hydraulics at least five times and it is always
>blowing out at the clutch slave. I did buy a new push rod that attaches
>to the transmission, since the piston keeps pushing beyond the housing I
>wonder if the problem is the pin (but I assume this is stock since I
>purchased it via Moss)? Or, if I have major transmission problems? I do
>have about 2 inches of freeplay at the transmission. That is, I can move
>the connector rod at the transmission all the way back and forth without
>feeling any movement in gears (this is the part that push rod connects to
>the transmission, not freeplay at the clutch pedal). I do not know if
>this is normal (transmission freeplay) or not since the gears are in
>neutral (I get the same freeplay if it is in gear or in neutral).
>
>I think I have covered all the bases, ANY help would be appreciated. BTW:
>this is on a 1971 MGB-GT, all original parts (trany and engine).
>
>Many Many Thanks,
>
>Jim Porco
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