black_widow87 Posted January 5, 2013 Share Posted January 5, 2013 Right guys, I seem to be having a problem with my clutch set-up. Approximatly 12 months ago i had a Competition stage 4 clutch fitted and since then the car has been driven regularly with no problems. Roughly 2 weeks ago, just before christmas the clutch pull collar (pic below) had snapped which i initally thought would be down to genreral wear an tear, so i had it replaced with a brand new part from Toyota. 1 week has passed and the same part has failed again! What is causing this part to fail? I think im right in saying that either the pressure plate is at fault or an unworthy pull collar? Are there any ways of testing pressure on the pressure plate? Any other thoughts welcome... Quote Link to comment Share on other sites More sharing options...
hodge Posted January 5, 2013 Share Posted January 5, 2013 I can't work out from that pic what part it is. Quote Link to comment Share on other sites More sharing options...
bignum Posted January 5, 2013 Share Posted January 5, 2013 So its the centre clutch hub thingy that has broken, i would think the pressure is at fault, does/did the clutch feel heavier before the breakage. Quote Link to comment Share on other sites More sharing options...
black_widow87 Posted January 5, 2013 Author Share Posted January 5, 2013 No pedal felt fine tbh. The fact that one part lasted 12 months and the other 2 weeks makes me think the pressure plate is playing up. Highly doubt its a duff part from Toyota. Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted January 5, 2013 Share Posted January 5, 2013 The pressure plate spring is too stiff for the circlip groove nose depth on the bearing carrier. The pull tension is so great it's pulling the metal land of with the circlip. That or something is going solid and you keep on pressing the pedal until something gives, (the bearing carrier in this case). This is why most high clamping force aftermarket clutches are push type... Quote Link to comment Share on other sites More sharing options...
richarde7927 Posted January 6, 2013 Share Posted January 6, 2013 Im hoping its not the pressure plate that is to stiff for the collar as i have just fitted the same clutch to my car. Quote Link to comment Share on other sites More sharing options...
black_widow87 Posted January 6, 2013 Author Share Posted January 6, 2013 What pressure is the pressure plate meant to produce normally? Is there a way of measuring so we definately know the pressure plate is at fault? Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted January 6, 2013 Share Posted January 6, 2013 No, not really, you will have to assume if it's assembled correctly the pressure plate spring is so strong as to be above what the bearing carrier can realistically stand. Is it one of those Yank things? All spring and no science Quote Link to comment Share on other sites More sharing options...
a98pmalcolm Posted January 6, 2013 Share Posted January 6, 2013 I will ignore this thread about Competition stage 4 clutch's....lol Hope you get the problem solved mate. Quote Link to comment Share on other sites More sharing options...
richarde7927 Posted January 6, 2013 Share Posted January 6, 2013 Its a comptition clutch stage 4 with single mass flywheel. Rich Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted January 6, 2013 Share Posted January 6, 2013 If it's assembled correctly and has a stock master and slave cylinder, I cannot think of what else could cause the circlip groove ring land to pull off other than the clutch spring is so strong as to over stress the component. Personally I think most US clutches are pretty naff. But if others have never had this issue I guess there might be something else wrong. Are you sure it was all assembled correctly??? Maybe refer to the factory manual that shows how the washers should be loaded along with the release bearing? Quote Link to comment Share on other sites More sharing options...
a98pmalcolm Posted January 6, 2013 Share Posted January 6, 2013 (edited) The CC stage 4 clutch is silly stiff if you haven't experienced using one. I have never felt anything like it. I had lower back ache on my right side for 3 days after I had one fitted (the muscle that is linked with the left leg) I know that CC advise that you fit there flywheel aswell at the same time. But my advise is stay away from Competition Clutch... Edited January 6, 2013 by a98pmalcolm (see edit history) Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted January 6, 2013 Share Posted January 6, 2013 I think Malcolm has given you the answer, as one who has had to go into some depth as to leverage ratios and diaphragm spring design in stock type pull clutches I can say with authority if the clutch pedal is really that heavy the loads on the bearing assembly and clutch fork will be insane. Bin it and buy a proper clutch. Quote Link to comment Share on other sites More sharing options...
hackin_n_bashin Posted January 6, 2013 Share Posted January 6, 2013 The CC stage 4 clutch is silly stiff if you haven't experienced using one. I have never felt anything like it. I had lower back ache on my right side for 3 days after I had one fitted (the muscle that is linked with the left leg) I know that CC advise that you fit there flywheel aswell at the same time. But my advise is stay away from Competition Clutch... Have only had mine in for about 1000 miles, but I can't disagree more, only feels slightly heavier than stock, and I mean slightly. I've had 2 ops on my left knee, it's inherently weak, and I have no trouble at all and that's with the stock flywheel. Quote Link to comment Share on other sites More sharing options...
a98pmalcolm Posted January 7, 2013 Share Posted January 7, 2013 (edited) Have only had mine in for about 1000 miles' date=' but I can't disagree more, only feels slightly heavier than stock, and I mean slightly. I've had 2 ops on my left knee, it's inherently weak, and I have no trouble at all and that's with the stock flywheel.[/quote'] You must have the odd lucky one then I have had 2 of those wretched things and both times it was silly stiff like REALLY stiff.. Anyone that I let have push was like "bloody hell that's horrible" My RPS triple plate is slightly heavier than stock and one of the softest uprated clutchs you and pretty much get. Pedal Press: Stock + 10% You have have a low pressure plate in yours that supports around 450BHP.. I maybe wrong but I'm only speaking on experiences Edited January 7, 2013 by a98pmalcolm (see edit history) Quote Link to comment Share on other sites More sharing options...
listy Posted January 7, 2013 Share Posted January 7, 2013 Have only had mine in for about 1000 miles' date=' but I can't disagree more, only feels slightly heavier than stock, and I mean slightly. I've had 2 ops on my left knee, it's inherently weak, and I have no trouble at all and that's with the stock flywheel.[/quote'] I've had mine for around a year now, and never had a problem. As hackin says, feels only slightly heavier than stock to me, and I didn't even have problems when my cruciate ligament went in my left knee. To be fair A98pmalcolm is the only person I have noticed ever complaining about them. Not to say he didn't have bad experiences using them, but more people seem to not have problems. Quote Link to comment Share on other sites More sharing options...
vvteye Posted January 8, 2013 Share Posted January 8, 2013 My competitionr clutch has started slipping on low revs so am changing to an RPS triple carbon soon. I,ll be glad to get rid of the comp which juddered in reverse from the off, hated traffic jams and the gentle pull in to the uphill drive. It,so got the lightened flywheel which I won 't know the conditions of until it's out. This has managed less than 20k miles and even if it's a pedal setting issue (bite is right at the top), it was just the excuse to remove this annoying lump. The pedal is about 20pc more than stock and if you need it for parts, it's available in 2/3 weeks. Quote Link to comment Share on other sites More sharing options...
black_widow87 Posted January 8, 2013 Author Share Posted January 8, 2013 My competitionr clutch has started slipping on low revs so am changing to an RPS triple carbon soon. I,ll be glad to get rid of the comp which juddered in reverse from the off, hated traffic jams and the gentle pull in to the uphill drive. It,so got the lightened flywheel which I won 't know the conditions of until it's out. This has managed less than 20k miles and even if it's a pedal setting issue (bite is right at the top), it was just the excuse to remove this annoying lump. The pedal is about 20pc more than stock and if you need it for parts, it's available in 2/3 weeks. Cheers bud, I may be in touch soon. Quote Link to comment Share on other sites More sharing options...
bignum Posted January 8, 2013 Share Posted January 8, 2013 You need the centreforce clutch thats for sale on here, as light as stock, drivable as stock and will easy hold the power you`ll be using. Quote Link to comment Share on other sites More sharing options...
black_widow87 Posted January 8, 2013 Author Share Posted January 8, 2013 You need the centreforce clutch thats for sale on here, as light as stock, drivable as stock and will easy hold the power you`ll be using. Wont i need to run that with the dual mass flywheel though? Quote Link to comment Share on other sites More sharing options...
bignum Posted January 8, 2013 Share Posted January 8, 2013 Wont i need to run that with the dual mass flywheel though? Yes, he has that too. Quote Link to comment Share on other sites More sharing options...
a98pmalcolm Posted January 8, 2013 Share Posted January 8, 2013 Its surprising the amount of people that CC clutch problems. I have had a few people contact me when I posted up my issues. And I have noticed a few places stop advertising them on there site now.. vvteye that will be the best you ever do... I love mine, its just suburb! Quote Link to comment Share on other sites More sharing options...
Guest Budz86 Posted January 8, 2013 Share Posted January 8, 2013 I did a bit of reading on these before deciding on an OEM clutch and flywheel because the CC ones had a terrible reputation for going wrong. I know they have guarantees but didn't fancy the bill to constantly pull the box and find out what the problem was! Quote Link to comment Share on other sites More sharing options...
a98pmalcolm Posted January 9, 2013 Share Posted January 9, 2013 Budz its only a 90 day guarantee. When my 1st one went wrong in 9 months I had to pay, but the 2nd one lasted a few weeks so honorably they did refund but as you said, the labour isn't refundable Quote Link to comment Share on other sites More sharing options...
Guest Budz86 Posted January 9, 2013 Share Posted January 9, 2013 Tbh they are quite a new company and with so any documented faults, the money you might save initially (which isn't vast) will quickly swallowed up fixing faults. Best to go for something tried and tested. CW for BPU's and RPS, Greedy or OS Geiken for singles. Quote Link to comment Share on other sites More sharing options...
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