Chris Wilson Posted November 9, 2011 Share Posted November 9, 2011 Another clutch advert full of BS. That's what I think. Quote Link to comment Share on other sites More sharing options...
Jamesy Posted November 9, 2011 Author Share Posted November 9, 2011 This looks a decent spec twin plate: http://www.horsepowerfreaks.com/partdetails/SPEC/Clutch/Clutch_Kits/D_Trim_-_Mini_Twin/16977 Quote Link to comment Share on other sites More sharing options...
Jamesy Posted November 9, 2011 Author Share Posted November 9, 2011 Another clutch advert full of BS. That's what I think. ok thanks Chris Quote Link to comment Share on other sites More sharing options...
Jamesy Posted November 9, 2011 Author Share Posted November 9, 2011 Unorthodox - again single plate but boasting of holding big power: http://www.horsepowerfreaks.com/partdetails/Unorthodox/Clutch/Clutch_Kits/Race_Pro_Sprung_4_Puck/12297 http://www.horsepowerfreaks.com/partdetails/Unorthodox/Clutch/Clutch_Kits/Race_Pro_Unsprung/12298 Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted November 9, 2011 Share Posted November 9, 2011 Just add enough clamping pressure and most clutch plates will hold a lot of torque. Making a single plate clutch of limited friction area hold a lot of torque AND behave in a civil manner, AND have good wear qualities is a lot harder. To handle a lot of torque without massive clamping pressure you need friction face area, so you get makers using 2, 3 or 4 plates. Trucks often have single plate clutches that behave beautifully, have huge lifespans and take massive amounts of torque, but they are of huge diameter. It's all a compromise. An unsprung clutch plate won't be as forgiving as a sprung one, even on a stock dual mass flywheel. A 3500 pound spring in a stock cover, like that first one you linked to, will be very heavy to operate, probably to the point the stock release mechanism will be sweating a bit. Quote Link to comment Share on other sites More sharing options...
Jamesy Posted November 9, 2011 Author Share Posted November 9, 2011 (edited) Just add enough clamping pressure and most clutch plates will hold a lot of torque. Making a single plate clutch of limited friction area hold a lot of torque AND behave in a civil manner, AND have good wear qualities is a lot harder. To handle a lot of torque without massive clamping pressure you need friction face area, so you get makers using 2, 3 or 4 plates. Trucks often have single plate clutches that behave beautifully, have huge lifespans and take massive amounts of torque, but they are of huge diameter. It's all a compromise. An unsprung clutch plate won't be as forgiving as a sprung one, even on a stock dual mass flywheel. A 3500 pound spring in a stock cover, like that first one you linked to, will be very heavy to operate, probably to the point the stock release mechanism will be sweating a bit. Great info Chris Edited November 10, 2011 by Jamesy (see edit history) Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted November 9, 2011 Share Posted November 9, 2011 I get to see, fit and mend a LOT of clutches, on all sorts of cars, especially Supras. The one that stands out as trouble free, well made, civil, and with off the shelf spares back up, that is listed for the 2JZ is the OS Giken. I have one in my own car.... I have yet to see a Giken product, be it clutch, gearbox, long stroke RB engine conversion or LSD that is less than superb. Quote Link to comment Share on other sites More sharing options...
Jamesy Posted November 9, 2011 Author Share Posted November 9, 2011 Yes OSG would be one of my 1st choices too Quote Link to comment Share on other sites More sharing options...
dude Posted November 9, 2011 Share Posted November 9, 2011 If your wanting a twin plate like Jamie's why not just order a new one instead of going 2nd hand. The words Jamesy, Brand new and full price are never heard in the same sentance !!!! Quote Link to comment Share on other sites More sharing options...
Samurai 20V Posted November 9, 2011 Share Posted November 9, 2011 I get to see, fit and mend a LOT of clutches, on all sorts of cars, especially Supras. The one that stands out as trouble free, well made, civil, and with off the shelf spares back up, that is listed for the 2JZ is the OS Giken. I have one in my own car.... I have yet to see a Giken product, be it clutch, gearbox, long stroke RB engine conversion or LSD that is less than superb. Chris, I remember reading that OS Giken is not ideal for drag racing.. Any recommendation on a clutch that will handle drag racing/track/street driving? Quote Link to comment Share on other sites More sharing options...
Jamesy Posted November 9, 2011 Author Share Posted November 9, 2011 The words Jamesy, Brand new and full price are never heard in the same sentance !!!! lol yeah this whole auto--->manual conversion if a definite favouirte of the cheap skates Quote Link to comment Share on other sites More sharing options...
Scott Posted November 9, 2011 Share Posted November 9, 2011 I'm gonna be after a new carbon clutch at some point to Jamesy, probably after Xmas though, I might see what Dusty can do on a price for 2 if you're not in a rush? I'm looking for an RPS carbon/carbon if you think you can negotiate a deal Quote Link to comment Share on other sites More sharing options...
dude Posted November 9, 2011 Share Posted November 9, 2011 lol yeah this whole auto--->manual conversion if a definite favouirte of the cheap skates Arthur Daley never died he was reborn and is the man known as Jamesy !!!!!!! Quote Link to comment Share on other sites More sharing options...
Jamesy Posted November 9, 2011 Author Share Posted November 9, 2011 Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted November 9, 2011 Share Posted November 9, 2011 If you go drag racing clutches are every bit as much of a consumable as petrol and tyres. It knocks seven bells out of them, and whatever you fit will need regular maintenance and replacement. Heat is the killer. I have no idea what is the "best" clutch fro drag racing, and suspect that benign road usage and reasonable life as a drag race clutch are mutually exclusive. Cerrametallic clutch linings do not like being slipped a lot. I would *imagine* somthing with centrifugal assistance to the clamping pressure is what you want for drag racing. I am afraid I don't know a lot about it, to me it's quite pointless, and a waste of money, sorry Quote Link to comment Share on other sites More sharing options...
Samurai 20V Posted November 9, 2011 Share Posted November 9, 2011 If you go drag racing clutches are every bit as much of a consumable as petrol and tyres. It knocks seven bells out of them, and whatever you fit will need regular maintenance and replacement. Heat is the killer. I have no idea what is the "best" clutch fro drag racing, and suspect that benign road usage and reasonable life as a drag race clutch are mutually exclusive. Cerrametallic clutch linings do not like being slipped a lot. I would *imagine* somthing with centrifugal assistance to the clamping pressure is what you want for drag racing. I am afraid I don't know a lot about it, to me it's quite pointless, and a waste of money, sorry Thanks Chris.. I get your point, I was looking for something that would handle all forms of racing.. I have the TRD single plate installed, I will just run that for now... Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted November 9, 2011 Share Posted November 9, 2011 I don't think there is a clutch that's both good for drag racing and good for normal street use, the demands are poles apart, and so, by definition, is their design criteria. A true carbon / carbon clutch is probably what I would suggest trying, but they are fearsomely expensive. They can be slipped without judder, bite better the hotter they get, within some bounds, and wear very well. It would almost certainly demand a custom flywheel and custom concentric release bearing. Sachs, AP Racing, Tilton, Alcon etcetera all make them. I would be looking at the biggest diameter they do, in triple or quad plate format, something like this: http://www.apracing.com/info/products.asp?product=Triple+%283%29+Plate+Assembly-%3Cbr%3ECP7213%3Cbr%3E+Standard+Duty+Clutch+Family%3Cbr%3E12+Bolt+Mounting_2820_2818 Torque capacity is adequate, a call to AP would get advice from the horse's mouth, they have excellent technical support. Quite why people want to buy from the US when we have a world leading home grown product I don't know Quote Link to comment Share on other sites More sharing options...
JamieP Posted November 9, 2011 Share Posted November 9, 2011 (edited) Guys what do we think of this HPF Feramic clutch? Yes its a single plate but its the highest HP holding sngle plater rated to over 1000rwhp and has been used in many 9sec drag cars http://www.horsepowerfreaks.com/ViewPartDescription.asp?Brand=HPF&Subcategory=Clutch_Kits&Details=Feramic_-_Supra_MK4 Only thing im unsure of is the 3500lb PP..... how heavy will that make pushing the clutch down and the biting point? On paper it sounds good, its bound to be very heavy though, id pm the guys in them threads that ate running them, first link takes you back to a thread started in 2004. I got my new RPS triple a few days back, cant wait to try it out. Edited November 9, 2011 by JamieP (see edit history) Quote Link to comment Share on other sites More sharing options...
johnny g Posted November 9, 2011 Share Posted November 9, 2011 On paper it sounds good, its bound to be very heavy though, id pm the guys in them threads that ate running them, first link takes you back to a thread started in 2004. I did that. A couple of them have complained about crankwalk Quote Link to comment Share on other sites More sharing options...
JamieP Posted November 9, 2011 Share Posted November 9, 2011 I did that. A couple of them have complained about crankwalk Because of the heavy pressure plate i guess, sounds about right, cheap clutch but kills your engine. Quote Link to comment Share on other sites More sharing options...
Jamesy Posted November 9, 2011 Author Share Posted November 9, 2011 (edited) New clutch looks immense there J Edited November 10, 2011 by Jamesy (see edit history) Quote Link to comment Share on other sites More sharing options...
Hellstrom Posted November 9, 2011 Share Posted November 9, 2011 when the crank is moving from front to back, ie it eats up the thrustbearings on the number 4 crank main bearing. Quote Link to comment Share on other sites More sharing options...
Luxluc Posted November 9, 2011 Share Posted November 9, 2011 Very interesting thread so far. I'm looking for a new clutch too, as I'm going for a build engine, new head, cams and more boost ; I don't think my RPS single plate 6 puck clutch will hold 800+ bhp and 700 tq. Any idea on a price for the OSG clutch Jamesy? Quote Link to comment Share on other sites More sharing options...
Jamesy Posted November 10, 2011 Author Share Posted November 10, 2011 Will see what price we can get for you Luc and drop you a pm Quote Link to comment Share on other sites More sharing options...
Luxluc Posted November 10, 2011 Share Posted November 10, 2011 Will see what price we can get for you Luc and drop you a pm Thx mate Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.