new clutch slipping

[v8cer]

Just had a new clutch fitted and it is slipping when I try to accelerate Hard I talked with the garage and they said it was the clutch 'bedding in?' has anyone else experienced this?

rgds Peter

[Toady1]

yes but not with the cerb. Has it had a new flywheel too as if it has this will take even longer to bed in. Drive carefully for a good couple of hundred miles, and do as much clutch pulling away driving as pos to help bed it in. Dont panic!

[trackcar]

Sorry but that's bad information about it needing to "bed in" to stop the slip .. there's a transfer of friction material like the bedding in process of brakes, but the clutch should not slip under these conditions because unlike brakes there's no cooling effect of airflow inside the bellhousing .. the heat generated from a slipping clutch gets dumped straight into the pressure plate and flywheel and can kill the grease in release bearings in a very short space of time. All of the above require the gearbox and bellhousing to come out again.

Something is wrong and needs sorting out before you kill the new clutch.

Don't drive the car and get the garage who fitted it to trailer the car back for further investigation.

[satman]

Joos...hope mine doesnt suffer from this!...

[trackcar]

well it'll get a workout on the dyno tomorrow morning .. everything else done : clucth, gauge, short induction, linked decats .. only mapping to do now

[numbnuts]

trackcar said:

Sorry but that's bad information about it needing to "bed in" to stop the slip .. there's a transfer of friction material like the bedding in process of brakes, but the clutch should not slip under these conditions because unlike brakes there's no cooling effect of airflow inside the bellhousing .. the heat generated from a slipping clutch gets dumped straight into the pressure plate and flywheel and can kill the grease in release bearings in a very short space of time. All of the above require the gearbox and bellhousing to come out again. Something is wrong and needs sorting out before you kill the new clutch. Don't drive the car and get the garage who fitted it to trailer the car back for further investigation.

Never heard of bedding in a new clutch

[trackcar]

Why the waggy finger?

[Nickccc]

Hmmmmm, short induction pipes for Satman, hello paddy, not sold up yet?
Joolz, where's my short pipes? You hear that daggers fellow snatched our crown? Well I want it back.
Come on, you just goto call and I'll be there.
Nick

[2 sMoKiN bArReLs]

trackcar said:

Why the waggy finger?

It's more polite that the other waggy thing

[trackcar]

Nickccc said:

Hmmmmm, short induction pipes for Satman, hello paddy, not sold up yet? Joolz, where's my short pipes? You hear that daggers fellow snatched our crown? Well I want it back. Come on, you just goto call and I'll be there. Nick

Sorry Nick, there's a queue! But you will get yours
Two more kits turned up today so I'm getting through them

[Cyclone1]

v8cer said:

Just had a new clutch fitted and it is slipping when I try to accelerate Hard I talked with the garage and they said it was the clutch 'bedding in?' has anyone else experienced this? rgds Peter

Just get it back to the bandits who fitted it and let the have a drive, if they still insist that it is ok and just bedding in then take it somewhere else for an alternative opinion, it sounds like it was fitted incorrectly or there is a parts related issue, either way the people who fitted it will hopefully diagnose and rectify the problem for you.

Best advice is to always use a recognised Independant Specialist or Dealership when getting these jobs done.

Seems to be a bad week for unsatisfied Cerb Owners / Customers, first the poor guy with the badly set-up suspension and now you.

Hopefully you get it sorted soon...

Jules.

[trackcar]

Echoed. there really is no excuse for sending a car out with a new clutch that's slipping. Cerbera clutches are fragile enough as we all know! And as I've said in the past many times, a lot of cerbie clutch problems are exagerrated by poor set-up.

[Toady1]

trackcar said:

Sorry but that's bad information about it needing to "bed in" to stop the slip .. there's a transfer of friction material like the bedding in process of brakes, but the clutch should not slip under these conditions because unlike brakes there's no cooling effect of airflow inside the bellhousing .. the heat generated from a slipping clutch gets dumped straight into the pressure plate and flywheel and can kill the grease in release bearings in a very short space of time. All of the above require the gearbox and bellhousing to come out again. Something is wrong and needs sorting out before you kill the new clutch. Don't drive the car and get the garage who fitted it to trailer the car back for further investigation.

are you saying my info is wrong? If the flywheel is a new machined surface and the plates are new too, then they WILL need to bed into each other before the friction is at its optimum. Im not saying slip the clutch like a tt to wear them into eachother, as thats more likely to cause it to glaze. The simple answer was that initially it will need to bed in, depends how bad its slipping of course.

[Scrooloose]

When I had a new clutch fitted to my bike (stage 2 tuned GSXR750), that needed gently bedding in before ragging the tits off it. I can't see why it would be any different on a car engine......

As it happens, the pattern part they fitted wasn't up to the job and sortof melted a bit after a while, so it was replaced with an original Suzuki part.

[Cyclone1]

How's the clutch? Have you had it sorted out yet, or are you still being advised to bed it in?

[trackcar]

Just to clarify .. clutches do "bed in" like brakes do, I said this in my earlier post, but the clutch should *not* be slipping during that process .. ie if it's slipping there's a fault. People seem to be thinking I'm saying you got bad advice to bed it in .. that's good advice, but it won't stop it slipping.

[Julian64]

This is a wierd thread full of strange comments. I have to say that you can destroy a perfectly good clutch in a single drive if its slipping. And bedding in has nothing to do with slipping, they are actions seperated by the same distance that seperates male from female drivers.

[dickkark]

I have fitted 4 cerbera clutches now(twin plate) and the only problem I have had has been clutch drag from the poor design of the slave cylinder,they must be spot on.
but I never had one slip even with new flywheel.
P.S I have got about five old units, is anybody is reconditioning these yet?