Which clutch

[850 t5 vs 600cc]

I've been sorting out getting a new clutch from Rufe. I read on this forum about putting on a 850 R clutch on my 850 T5 and and it fits ok. I've been given 3 prices depending on what gearbox i have but where do i find this information.
This is Rufe's information i was given:
If you wish to order please confirm which one you decide to go for -

All prices include Vat at 15% -

Clutch Kit, 1997 B5234FT, M56: [272237]
Retail Price £251.28 / Our Price £183.44

OR:

Clutch Kit, B5234T5, M56: [271956]
Retail Price £230.00 / Our Price £167.90
(*Sweden)

OR:

Clutch Kit, B5234T4, M59: [272218]
Retail Price £251.28 / Our Price £183.44

AND:

Release Bearing: [9181780]
Retail Price £45.78 / Our Price £33.42

Cheers Dave

[p fandango]

its the M59 one you want for the 850R clutch

[t5 pete]

its the M59 one you want for the 850R clutch

What gear box does the t5 have is it m56

[p fandango]

What gear box does the t5 have is it m56

yeh, M56H. They also do a M56L which has a lower ratio on 1st & 2nd for smaller engined 850's

[PaulZX]

yeh, M56H. They also do a M56L which has a lower ratio on 1st & 2nd for smaller engined 850's

so an M56L would be beneficial to drag racing then? you'd deffo hit 4th with time to boost surely?

[p fandango]

so an M56L would be beneficial to drag racing then? you'd deffo hit 4th with time to boost surely?

i think the lower ratios would be wasted in a T-5, it would just spin the tyres up easier. If you could guarantee the grip & wanted to lower the ratios i think sticking with the M56H but using a final drive from a B5204S engined car as it would lower the ratio of the whole gearbox not just 1st & 2nd. The B5204S has a final drive ratio of 4.45:1 while all other models have a ratio of 4.00:1

[p fandango]

despite the fact i'm in bed & should be sleeping, i got bored & ran some numbers thru a simulator to see what it came out with. I've entered my own tyre size (215/35/18) & the rpm limiter at 7k & it gave out some interesting figures

Max speeds

M56L with 4.00:1 final drive
1st = 37mph
2nd = 66mph
3rd = 105mph
4th = 143mph
5th = 178mph

M56H with 4.00:1 final drive (standard T-5)
1st = 41mph
2nd = 70mph
3rd = 105mph
4th = 143mph
5th = 178mph

M56L with 4.45:1 final drive
1st = 33mph
2nd = 59mph
3rd = 94mph
4th = 129mph
5th = 160mph

M56H with 4.45:1 final drive
1st = 36mph
2nd = 63mph
3rd = 94mph
4th = 129mph
5th = 160mph