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Clutch judder after a run
Posted: Mon Jul 20, 2015 7:32 pm
by 73sprint
Hi all. Any thoughts as to why my sprint suffers from clutch judder only when fully warmed up after a run, say 30 mins or so. The gearbox mount is fairly new and the engine mounts seem ok. No obvious oil leaks around the bell housing,its fine when cold but its a nightmare in first and reverse after a while.
Re: Clutch judder after a run
Posted: Mon Jul 20, 2015 10:55 pm
by trackerjack
First thoughts were oil on clutch face but it could be the centre bearing on prop shaft.
Jonners will most likely be the man on this one.
Re: Clutch judder after a run
Posted: Tue Jul 21, 2015 8:49 am
by Flyfisherman
73sprint wrote:Hi all. Any thoughts as to why my sprint suffers from clutch judder only when fully warmed up after a run, say 30 mins or so. The gearbox mount is fairly new and the engine mounts seem ok. No obvious oil leaks around the bell housing,its fine when cold but its a nightmare in first and reverse after a while.
i had the same issue after a run - renewed the clutch problem gone - all down to a slight buckling with a strip of metal situated between the two friction plates.
viewtopic.php?f=4&t=27610#p268718 - bigger picture here.
Paul
Re: Clutch judder after a run
Posted: Tue Jul 21, 2015 9:55 am
by lazeruspete
i thought all clutches were like that?
Re: Clutch judder after a run
Posted: Tue Jul 21, 2015 10:24 am
by Jon Tilson
Numerous things can cause this so eliminate the cheapies first....
Engine steady bar rubbers.
Rear axle tie bar rubbers
Prop shaft centre bearing
Engine and box mounts...but you've done those...is the box mount tight?
Only then change the clutch....
Jonners
Re: Clutch judder after a run
Posted: Wed Jul 22, 2015 7:53 am
by 73sprint
Thanks for the feed back. Gonna have a look at the prop this week as i have a spare, cant think it can be much else, well i hope so any way.
Hmmm.......
Posted: Wed Jul 22, 2015 10:30 am
by sprint95m
Sorry to bring bad news....
73sprint wrote:Any thoughts as to why my sprint suffers from clutch judder only when fully warmed up after a run, say 30 mins or so.
The warmed up bit is the clue.....
I have twice seen this and it was the clutch itself that was at fault.
This is an original Borg & Beck clutch plate that lost its springs and had the centre rivets shear.
The spigot bearing (Oilite brass type) had broken up, possibly because it had been fitted dry?
It was only juddering a little beforehand.
In my experience the other faults suggested display their symptoms all the time, not just when warmed up.
If it was up to me, I'd remove the gearbox......
Ian.
