Saxperience - Citroen Saxo Forum - View Single Post - Standard 16v clutch bhp and torque rating

axsaxoman · 17th November 2011, 11:36

BHP IS A CALCULATION OF TORQUE X RPM divided by 5250
so yes torque is way you rate a clutch and the higher the rpm for a given bhp ,the less torque there is .
so to get a real answer you need to know both the torque value and rpm max torque wil be at ,
a REAL 180 bhp is too much for a std clutch ,UNLESS ITS AT above 8K. and then its still too much really as with rpm the cntrifical effect on the cover will reduce its torque capcity
std clutch is designed for 120bhp --not +50%--
I think you will find the cars that run std clutch and are ok do not have 180 bhp--
just like the dutch guy a few months ago who was claiming 300bhp on his turbo car,usingstd internals and using a helix uprated pressed steel cover type clutch --If he had 300 bhp the clutch would be slipping on the dyno if its was fully loaded up and not just a "flash" bhp figure .
I have ripped the cover off the flywheel with that type of unit at lees power than that .
the saving grace on most road cars is that you will get wheelspin before you see a real 260+@wheels ,so that saves the clutch a bit
if its boosted and giving 180 bhp at around 5500-6500 --no way will std clutch last ,you can raise the capacity a little by making the step on the flywheel a little bigger ,but not much

17th November 2011, 11:36	#8
axsaxoman Saxperience Forum Bum Join Date: Jan 2003 Location: Scotland Posts: 3,380 iTrader Score: 1 (100%)	BHP IS A CALCULATION OF TORQUE X RPM divided by 5250 so yes torque is way you rate a clutch and the higher the rpm for a given bhp ,the less torque there is . so to get a real answer you need to know both the torque value and rpm max torque wil be at , a REAL 180 bhp is too much for a std clutch ,UNLESS ITS AT above 8K. and then its still too much really as with rpm the cntrifical effect on the cover will reduce its torque capcity std clutch is designed for 120bhp --not +50%-- I think you will find the cars that run std clutch and are ok do not have 180 bhp-- just like the dutch guy a few months ago who was claiming 300bhp on his turbo car,usingstd internals and using a helix uprated pressed steel cover type clutch --If he had 300 bhp the clutch would be slipping on the dyno if its was fully loaded up and not just a "flash" bhp figure . I have ripped the cover off the flywheel with that type of unit at lees power than that . the saving grace on most road cars is that you will get wheelspin before you see a real 260+@wheels ,so that saves the clutch a bit if its boosted and giving 180 bhp at around 5500-6500 --no way will std clutch last ,you can raise the capacity a little by making the step on the flywheel a little bigger ,but not much __________________ when the flag drops the bulshit stops. owner of GMC motorsport 01671404030/01671403699 Last edited by axsaxoman; 17th November 2011 at 11:43.