The V8 Owners Forum -

Hi Mantav8rally.
I agree with SuperV8 in as much that you have a mismatch with the flat bearing and flat fingers on the diaphragm. I'm sure there are plenty of guys out there who have a similar set up and don't realise there is a mismatch. The mismatch shouldn't cause a noise unless it's a self centering type bearing which is not centralising every time due to uneven side ways forces induced by the fingers on the face of the bearing.

Out of interest, what bellhousing are you using to join a T5 to the Rover block? Is it a fabricated item, has it been checked for concentricity?

Going back to your initial post. you said that you always had a noise when you pressed the clutch. Could the whole thing be out of line?

In my previous post I flagged up the possibility of the spigot bush/bearing making the noise. If the bush is worn, the first motion shaft has no support when the clutch is released and all then hangs on the first bearing in the gearbox. In this situation the spigot bearing can buzz , scream or chatter and it won't happen every time. The bearing may just be dry.

It would be worth checking the spigot bush/bearing next time the gearbox if removed.

Regards Denis

Not directly related (sorry) but can anyone confirm that the standard RV8 spigot bearing is oilite and therefore already oil impregnated? I used a std rover one for my T5 and had it opened up to take the T5 shaft.

A bit of Googling suggest it is oilite.

Mike

seight wrote:Not directly related (sorry) but can anyone confirm that the standard RV8 spigot bearing is oilite and therefore already oil impregnated? I used a std rover one for my T5 and had it opened up to take the T5 shaft.

A bit of Googling suggest it is oilite.

Mike

Yes, the standard Rover spigot is a bronzeish impregnated type. I too have opened one up to take a T5 shaft and all worked fine. I'm not sure this is the only option when using a T5 on a Rover so Mantav8rally may have something else fitted.

If the bronze type was over bored in the first place or worn due to frequent high revs at the start line, then it's possible it is chattering when the clutch is pressed. I had this happen on a mk1 cortina which occasionally made a buzzing noise when the clutch was pressed.
Regards Denis

There is a needle roller type available for the t5 to rover which is the one used.

tom

SuperV8 wrote:There is a needle roller type available for the t5 to rover which is the one used.

tom

Hi Tom,
Any idea where I can get a needle type for future projects?
Cheers Denis

Hi Denis,
Think it was from one of the TVR spares shops, may even have been TVR power in coventry although I've just googled them and they only appear to have the plain bush! so that's not much help

I've seen a roller bush listed for the tuscan which uses the same T5 gearbox, would need to check the od?

Tom.

the ends of the fingers on my old clutch housing are all shiny as if the bearing has been polishing them up, is this normal? is a cosworth bearing a self centering one? the bell housing im using is a cosworth one i think, will it help if i post some pics? like i say what puzzles me is the car has worked fine all be it with the noise but its recently that it started doin this so thats why im wondering what has suddenly changed, also when i am sat in 1st gear with my foot on the clutch it can be ok and as soon as i build the revs up it starts to do the noise and tries to jump forward and also the clutch starts to smell, do you think i should pull the box out and take pics for you all to see? thanx for all the help at the moment

Just a quick thought, has the clutch fluid level dropped and as a result you have some air in the system? just a dragging clutch, which this sounds like, can result from this and the noises can seem intermittent, if it is air in the system.
best regards
Mike
Ps just as another thought, when did you last change the clutch fluid? could be water in the clutch fluid.

hi, its a cable clutch

mantav8rally wrote:the ends of the fingers on my old clutch housing are all shiny as if the bearing has been polishing them up, is this normal? is a cosworth bearing a self centering one? the bell housing im using is a cosworth one i think, will it help if i post some pics? like i say what puzzles me is the car has worked fine all be it with the noise but its recently that it started doin this so thats why im wondering what has suddenly changed, also when i am sat in 1st gear with my foot on the clutch it can be ok and as soon as i build the revs up it starts to do the noise and tries to jump forward and also the clutch starts to smell, do you think i should pull the box out and take pics for you all to see? thanx for all the help at the moment

The shiny fingers are not unusual but the fact that you have a flat faced bearing and flat fingers means that the fingers when moving are scrubbing on the bearing instead of a rolling action which would occur with a round faced bearing. So you will get additional wear on the finger tips.
Slight uneven pressure could cause the bearing not to centralise.

To solve the problem you will in any case need to remove the box and pictures would be very useful.

A question, When you changed the plate and cover, did you fit a new release bearing?

The bellhousing is unlikely to be a Cosworth item as the RV8 flywheel will not fit inside it. The bellhousing coud be a modified auto RV8 item with an adapter plate for the T5 or it could be a TVR item converted to cable operation but photos will tell all.
Regards Denis

mantav8rally wrote:hi, its a cable clutch

OK so it's not that then
as I said just a thought
Best regards
Mike

pictures coming soon, thanks for your patients everyone, keep the advice coming!!!!!!

Here is one pic of my box, more to come just tryin it out on my smart phone

Hi Mantav8rally,
From the photo I would say the bellhousing is a RV8 Automatic gearbox item with an adapter plate drilled to suit the T5 box.

I have used the same set up myself on a previous project.

Looking at the clutch cable bracket it appears to be at an angle relative to the pull line. This will cause the release lever to act at an angle and will tend twist the release bearing and pull it off centre.

I suggest you adjust the cable bracket or remake it to give a true pull line,

Regards Denis

Hi, thanks for your reply,so the setup I have is nothing unusual which is a good start, please could you point me in the right direction on how to get a better pull line, if the arm has bent that would maybe explain why it worked before ( even tho a little noisy) and now it has the problem even with a full new clutch, is your arm the same, what bearing do you use? Thanx dave