24 replies to this topic

[Minigman]

I have a pre verto clutch on an engine putting out 92bhp.

The clutch I have is knackered.

I was looking at the minispares caht595

https://minispares.c...c/C-AHT595.aspx

but also noticed MED do a turbo one for £35 which seems cheap

https://www.med-engi...id-clutch-plate

I will also replace my existing orange diaphragm with a new orange one whilst I’m at it.

Any ideas or advice on the clutch plate please?

Edited by Minigman, 26 April 2020 - 07:06 PM.

[Minigman]

Or avoid the orange diaphragm? How much can a standard blue one handle?

[GraemeC]

MiniSpares also do a ‘turbo’ spec one:

https://minispares.c...|Back to search

What is the spec of the engine and car?

[mini13]

was yours slipping? if so its probably due to wear, the mimi set up is a bit sensitive to plate wear, I wpuld check the thickness of yours, and if its well worn a decent replacement plate will sort you out.

 

I would say any of the lined plates will be  fine, my normal critera for a plate is avoild anything with a sprung centre.

[Minigman]

MiniSpares also do a ‘turbo’ spec one:
https://minispares.c...|Back to search
What is the spec of the engine and car?

Engine spec;
1330cc
Stage 3 head 11 bolt.
276 cam
Twin HS4 carbs
Lightened flywheel
Vernier timing gear
Stand 1132 box with cross pin diff
All lightened and balanced

All in a ‘74 mk3 (rod change box)

[Minigman]

was yours slipping? if so its probably due to wear, the mimi set up is a bit sensitive to plate wear, I wpuld check the thickness of yours, and if its well worn a decent replacement plate will sort you out.

I would say any of the lined plates will be fine, my normal critera for a plate is avoild anything with a sprung centre.

Not slipping just knackered when I took the whole assembly apart. It’s quite worn down.

Aren’t all pre verto solid unsprung plates?

[imack]

If it's all been balanced I'd be tempted to keep the diaphragm if there's nothing wrong with it and just replacethe centre plate. My orange diaphragm's 30 years old now and still going strong.

[GraemeC]

The turbo plate will be fine in that so no need pay more for the MiniSpares C-AHT595

As said - no need to change diaphragm if it’s OK and you’re not getting slip.

[Minigman]

Thanks chaps.

[blacktulip]

According to MED the turbo clutch plate is far better than the standard one for all applications so I would go with that one for your spec.

[Minigman]

If it's all been balanced I'd be tempted to keep the diaphragm if there's nothing wrong with it and just replacethe centre plate. My orange diaphragm's 30 years old now and still going strong.

Very difficult to find that centre thrust plate. Nobody seems to stock them. There’s a couple in the USA but they work out dearer than a new complete diaphragm.

[mini13]

Possibly, although I'm sure Ive taken sprung plates out of preverto's they may well have been verto ones that had found their way in there.

 

Ive found after market plates less prone to judder, probly just better friction material,

 

I would also keep your orange cover in there,

 

 

 

was yours slipping? if so its probably due to wear, the mimi set up is a bit sensitive to plate wear, I wpuld check the thickness of yours, and if its well worn a decent replacement plate will sort you out.

I would say any of the lined plates will be fine, my normal critera for a plate is avoild anything with a sprung centre.

Not slipping just knackered when I took the whole assembly apart. It’s quite worn down.

Aren’t all pre verto solid unsprung plates?

 

 

[GraemeC]

 

If it's all been balanced I'd be tempted to keep the diaphragm if there's nothing wrong with it and just replacethe centre plate. My orange diaphragm's 30 years old now and still going strong.

Very difficult to find that centre thrust plate. Nobody seems to stock them. There’s a couple in the USA but they work out dearer than a new complete diaphragm.

 

 

I think he means the clutch driven plate - not the diaphragm thrust plate.

[imack]

If it's all been balanced I'd be tempted to keep the diaphragm if there's nothing wrong with it and just replacethe centre plate. My orange diaphragm's 30 years old now and still going strong.

Very difficult to find that centre thrust plate. Nobody seems to stock them. There’s a couple in the USA but they work out dearer than a new complete diaphragm.

I think he means the clutch driven plate - not the diaphragm thrust plate.

Yeah I mean replace the clutch driven plate only.
The thrust plates don't normally wear unless the clutch is incorrectly adjusted and the release bearing has been in constant contact with the thrust plate.(the thrust plate used to be available separately)
I've just replaced my pre verto release bearing and fitted the heavy duty bearing from mini spares - this type has a much greater surface area in contact with the thrust plate. I'm sure this used to be the standard release bearing that was used years ago.

Edited by imack, 27 April 2020 - 09:01 AM.

[Minigman]

If it's all been balanced I'd be tempted to keep the diaphragm if there's nothing wrong with it and just replacethe centre plate. My orange diaphragm's 30 years old now and still going strong.

Very difficult to find that centre thrust plate. Nobody seems to stock them. There’s a couple in the USA but they work out dearer than a new complete diaphragm.

I think he means the clutch driven plate - not the diaphragm thrust plate.

Yeah I mean replace the clutch driven plate only.
The thrust plates don't normally wear unless the clutch is incorrectly adjusted and the release bearing has been in constant contact with the thrust plate.(the thrust plate used to be available separately)
I've just replaced my pre verto release bearing and fitted the heavy duty bearing from mini spares - this type has a much greater surface area in contact with the thrust plate. I'm sure this used to be the standard release bearing that was used years ago.

I bought a KOR comp thrust bearing. But I’m not 100% sure which was round it goes. Does the side without writing face the clutch? All previous bearings have been the same both sides so never questioned it. I assume the flatter side goes against the thrust plate?