Clutch sizes from different manufacturers.
bilbo - 3/2/07 at 07:06 PM
OK, this is going to be a bit of a waffle, but please bear with me 
I’m in the process of mating up a Rover T-16 Turbo engine with a type 9 box. Plan ‘A’ is to use the original FWD bell housing attached to the gearbox
using custom adapter plates. This allows me to use the original starter motor, flywheel and hydraulic clutch mechanism. Now the original gearbox was a
Honda unit using a 24 spline input shaft, whereas the type 9 is 23 spline, so I need to find a clutch plate that will fit the original clutch
mechanism, but have 23 splines.
Now, after some research I think I’ve found one. The dimensions/specifications I have for the clutch are from Quinton Hazel (part number C911AF). This
plate is used on 2.3 and 2.6 Rover SD1s and also on some Sherpa vans.
I went to my local motor factors today and they can get hold of one, but only as part of a full kit – along with a full kit price 
Now after an internet search, I found that Rimmer Bros do just the plate:
http://www.rimmerbros.co.uk/cgi-bin/rimmer?findpart&PartID=GCP248&Page=rover/sd1/clutch and even better I’ve also found this on e-bay:
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&ih=014&sspagename=STRK%3AMEWA%3AIT&viewitem=&item=330084532214&rd=1&rd=1
/>
Which is a full kit, but a fraction of the price.
My question here is that these I’ve found are not made by QH and therefore have different part nos. Would it be fair to say that the clutches made by
other firms are exactly the same dimensions as the QH one, or would they differ at all?
gazza285 - 4/2/07 at 04:22 AM
What size do you require?
bilbo - 4/2/07 at 09:13 AM
The original clutch is 228x25.0 with 24 splines (C1809AF)
The closest I've found is the C911AF which is 231x25.4 with 23 splines.
It's very slightly bigger, but it should still fit.
Johnmor - 4/2/07 at 09:21 AM
I have done something similar, what i discovered was that you can use a friction plate 5 or 10 mm smaller in diameter but the pressure plate will not
allow more than 1 or 2mm bigger in diameter.
I take it you are using the rover pressure plate that used a 228 mm dia friction plate originally.
The SD1 is 231mm so it might fit , but I would check the clearance you have on the friction surface on the pressure plate to make sure it doeas not
contact the edge of the pressure plate casing.
Other option may be :
MK1 mondeo 1.8 220x24.5x23
Sierra 215x24.5x23.
The reason is ay this is because my Alfa used a 228mm friction plate and a 232mm does not fit on the pressure plate.
I used the sierra 215 (lots of them and cheap on Ebay), 200bhp so far so good no sign of slip or wear.
The cars are fairly light so i dont think there is that much force on the clutch.
Good luck.
bilbo - 4/2/07 at 09:42 AM
quote:
Originally posted by Johnmor
I have done something similar, what i discovered was that you can use a friction plate 5 or 10 mm smaller in diameter but the pressure plate will not
allow more than 1 or 2mm bigger in diameter.
I take it you are using the rover pressure plate that used a 228 mm dia friction plate originally.
The SD1 is 231mm so it might fit , but I would check the clearance you have on the friction surface on the pressure plate to make sure it doeas not
contact the edge of the pressure plate casing.
Other option may be :
MK1 mondeo 1.8 220x24.5x23
Sierra 215x24.5x23.
The reason is ay this is because my Alfa used a 228mm friction plate and a 232mm does not fit on the pressure plate.
I used the sierra 215 (lots of them and cheap on Ebay), 200bhp so far so good no sign of slip or wear.
The cars are fairly light so i dont think there is that much force on the clutch.
Good luck.
Thanks for that Johnmor, that's very useful to know. I am using the Rover pressure plate. I measured it and a 231 should fit, however, now you
have mentioned that smaller ones will work, I think I'd rather use a ford friction plate if I can due to their much better availability (and
price).
Thanks again,
Bill
[Edited on 4/2/07 by bilbo]