MINI MARK 1 CLUTCH PROBLEM 1961
Discussion
THE CLUTCH ON MY MINI WILL NOT CLEAR WHEN ENGINE RUNNING
ITS OK WHEN ENGINE STOPPED IN TOP GEAR AND THE CLUTCH DEPRESSED IT CLEARS
ALL HYDRAULICS HAVE BEEN CHANGED EVEN FLEXIBLE PIPE AND THERES FULL TRAVEL
I SUSPECT PRESSURE OR CLUTCH PLATE
MY CAR HAS THE OLD COIL SPRING PRESSURE PLATE
I HAD THE ENGINE OUT RECENTLY AND NATURALLY CHECKED THE CLUTCH
DRIVEN PLATE MOVED FREELY ON THE SPLINES
THANKS IN ADVANCE FOR ANY HELP
ANDY
ITS OK WHEN ENGINE STOPPED IN TOP GEAR AND THE CLUTCH DEPRESSED IT CLEARS
ALL HYDRAULICS HAVE BEEN CHANGED EVEN FLEXIBLE PIPE AND THERES FULL TRAVEL
I SUSPECT PRESSURE OR CLUTCH PLATE
MY CAR HAS THE OLD COIL SPRING PRESSURE PLATE
I HAD THE ENGINE OUT RECENTLY AND NATURALLY CHECKED THE CLUTCH
DRIVEN PLATE MOVED FREELY ON THE SPLINES
THANKS IN ADVANCE FOR ANY HELP
ANDY
I agree with 'plank'. I had a Cooper 'S' in last year which had cluth engagement problems and it turned out to be 0.040" crank end float resultimng in a scrap crank and considerable machining to the block plus sourcing +0.030" thrust washers.
By the way, I now have a clutch problem with my Innocenti which i'm trying to isolate. Does anyone know what the stroke of a pre-Verto clutch slave cylinder should be? I measured mine at 0.3" whilst my Cooper 'S' seems to measure 0.050". That's measured after taking all the slack out of the linkage and just measuring the linear stroke at the operating push rod.
By the way, I now have a clutch problem with my Innocenti which i'm trying to isolate. Does anyone know what the stroke of a pre-Verto clutch slave cylinder should be? I measured mine at 0.3" whilst my Cooper 'S' seems to measure 0.050". That's measured after taking all the slack out of the linkage and just measuring the linear stroke at the operating push rod.
pete
a mate of mine had this problem and after a lot of messing discovered that that the n.o.s clutch master he had bought of ebay was the wrong bore size - the result was the piston in the slave cylinder didnt move as far as it should when the pedal was pressed.
looking further into it, it would appear that a 'good trick' of people who sell such things is to buy austin 1100 clutch masters (which are the wrong bore), remove the operating rod (which is the wrong length) and fit a mini operating rod - voila, a n.o.s grey coloured master cylinder thats worth 75 quid instead of a tenner......
it took a lot of finding - he even had the motor out because he though it was a flywheel/clutch/crank problem.
a mate of mine had this problem and after a lot of messing discovered that that the n.o.s clutch master he had bought of ebay was the wrong bore size - the result was the piston in the slave cylinder didnt move as far as it should when the pedal was pressed.
looking further into it, it would appear that a 'good trick' of people who sell such things is to buy austin 1100 clutch masters (which are the wrong bore), remove the operating rod (which is the wrong length) and fit a mini operating rod - voila, a n.o.s grey coloured master cylinder thats worth 75 quid instead of a tenner......
it took a lot of finding - he even had the motor out because he though it was a flywheel/clutch/crank problem.
Hi Rich,
I thought you were on holiday this week!
The master cylinder bore did occur to me, but both slave & master cylinders were as fitted to this car when I acquired it and it was working last time it was used, about 12 months ago. You colleague sent me a new slave which arrived this morning (that's Mini Spares North's excellent mail order service) and I'll fit and bleed that. If that's no good I'll call you and order a new master.
I thought you were on holiday this week!
The master cylinder bore did occur to me, but both slave & master cylinders were as fitted to this car when I acquired it and it was working last time it was used, about 12 months ago. You colleague sent me a new slave which arrived this morning (that's Mini Spares North's excellent mail order service) and I'll fit and bleed that. If that's no good I'll call you and order a new master.
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