Clutches Compatibility

Post by **Coops** » Wed Mar 12, 2008 12:12 am

After the weekend, im still puzzled to wether the clutch was slipping or i lost traction on gear changes when the gas cut in or my lsd is slipping,

Do any of the cosworth clutches fit the RV8 flywheel and inputshaft?
reason i ask the AP racing clutch im using now is

Rover V8 and TR8
Diameter mm 240
Torque Capacity Nm (lbsft) 366 (270)
Year 1976 - 1984
Driven Plate Type Organic
3 in 1 Clutch Kit CP2000-13
4 in 1 Clutch Kit N/A

they list the same style cosworth one:

Ford Sierra- RS Cosworth and 500
Diameter mm 240
Torque Capacity Nm (lbsft) 476 (351)
Year 1986 - 1990
Driven Plate Type Organic
3 in 1 Clutch Kit CP2000-9
4 in 1 Clutch Kit N/A

and:

Diameter mm 240
Torque Capacity Nm (lbsft) 476 (351)
Year 1986 - 1990
Driven Plate Type 6 Paddle Sprung Centre Cerametallic
3 in 1 Clutch Kit CP2015-9
4 in 1 Clutch Kit N/A

Ford Sapphire- RS Coswoth and 4x4
Diameter mm 240
Torque Capacity Nm (lbsft) 476 (351)
Year 1990 - 1993
Driven Plate Type Organic
3 in 1 Clutch Kit CP2000-10
4 in 1 Clutch Kit N/A

and:

Diameter mm 240
Torque Capacity Nm (lbsft) 476 (351)
Year 1990 - 1993
Driven Plate Type 6 Paddle Sprung Centre Cerametallic
3 in 1 Clutch Kit CP2015-10
4 in 1 Clutch Kit N/A

and

Diameter mm 240
Torque Capacity Nm (lbsft) 476 (351)
Year 1990 - 1993
Driven Plate Type 6 Paddle Rigid Cerametallic
3 in 1 Clutch Kit CP2015-10R
4 in 1 Clutch Kit N/A

Post by **katanaman** » Wed Mar 12, 2008 12:34 am

The input shafts are very slightly different in that the rover is imperial and the cosworth is metric. This will mean a slight miss match on the plate splines but if it will matter I have no idea. What I can say is that McLeod went to the bother of making a specific plate to fit the cosworth T5 so they seem to think it matters. The clutch cover plate wont fit the flywheel tho as its a different bolt pattern. Might be possible to re-drill the flywheel but you would probably have to get it balanced after that.

Post by **Coops** » Wed Mar 12, 2008 12:37 am

i wonder if AP would do me a clutch to the cossie spec?
i gather the plates would be similar albeit different splines,
would it be just the cover plate that has a better clamping force?

Post by **katanaman** » Wed Mar 12, 2008 12:39 am

If they wont then try I think its Helix?? that some of the guys go on about. I think Ian S uses them.

Post by **Coops** » Wed Mar 12, 2008 12:43 am

cheers mate,
will see what AP say this week

Post by **Coops** » Wed Mar 12, 2008 6:08 pm

i have watched this over and over again,
http://www.youtube.com/watch?v=ARPoGxaKIys
and im starting to think its not a clutch issue maybe a fuelling issue as in too much at WOT,
as the revs die and pick up slow not like if the clutch was slipping.

Post by **katanaman** » Wed Mar 12, 2008 6:15 pm

That will be my fault getting you thinking then??? lol So you see what I mean about the revs now then?

Post by **Coops** » Wed Mar 12, 2008 6:56 pm

im wondering if when on gas theres too much fuel when at WOT and fuel accel enrich, as well as the nitrous fuel enrichment,
sound logical?
im thinking im going to have to do a datalog when on gas again

stevieturbo · Post by **stevieturbo** » Wed Mar 12, 2008 7:08 pm

Cosworth T5 spline is same as LT77 etc.

The US T5's have a totally different spline AFAIK.

Post by **katanaman** » Wed Mar 12, 2008 7:22 pm

Sorry Stevie but they aren't. They have the same number of splines but one is inch and the other is 25mm. A small difference I know and like I said I have no idea if it will make any odds but they aren't the same.

stevieturbo · Post by **stevieturbo** » Wed Mar 12, 2008 7:39 pm

OK..

Although I am sure the clutch I had on mine years ago, was the same part number as the Cossie one.

r2d2hp · Post by **r2d2hp** » Wed Mar 12, 2008 7:48 pm

A cossie T5 is 1", so is the LT77 25mm

CastleMGBV8 · Post by **CastleMGBV8** » Wed Mar 12, 2008 7:55 pm

Tony,

I'm glad you started this thread because I had completely forgotten that I had to get a new clutch so that it can be balanced with the rest of the internals.

I am wondering if the standard clutch kit CP 2000-13 will stand up to the torque of the new engine which is 4.35L with the equivalent of stage 3 heads and Crower 50232 cam, in a car weighing approx 2350lbs.

I don't really want to go for a heavy duty clutch if I can avoid it as I dont wan't a very heavy clutch action, being a feeble old git.

Problem is I just don't know what level of torque the engines going to make, i can guess at 260 BHP and probably 280lb/ft of torque.

The CP2000-13 is rated at 270lb/ft but that is in the much heavier SD1 and I will probably lose traction before the clutch slips anyway.

Anyone care to comment.

Kevin.

Post by **katanaman** » Wed Mar 12, 2008 7:59 pm

r2d2hp wrote:A cossie T5 is 1", so is the LT77 25mm

other way round http://www.v8tuner.co.uk/product.php?id=464

r2d2hp · Post by **r2d2hp** » Wed Mar 12, 2008 8:04 pm

Think it depends where you look. Burtons have Cossie down as 1"

http://www.burtonpower.com/technical_1/ ... arbox.aspx

https://www.burtonpower.com/product_mai ... %20gearbox

Interesting Article
http://geoff.richmond.users.btopenworld ... earbox.htm

Same clutch can be used in old Type 9 as the T5