sarajitTR6 Posted February 22, 2012 Report Share Posted February 22, 2012 Im changing the steel bearing carrier with the pin for a phosphor bronze one. And changing the shaft/bearings to the TR4 type. The question is which release bearing to fit. Revington has sent me a KYK brand. I googled it and didnt get much info on it, other than its Japanese. Hopefully not made in some factory in China, resulting in my having to pull out the transmission again in 3 months. Any experiences with this bearing in the TR6? Im using it in conjunction with an original B&B clutch cover i.e. pin type. Lots on the Gunst bearing. Any experience with these? they are expy ! Thanks Sarajit Quote Link to post Share on other sites
Alec Pringle Posted February 22, 2012 Report Share Posted February 22, 2012 There's nothing wrong with KYK bearings. Revington's choice of consumables is usually appropriate and reliable. I wouldn't personally pay too much attention to the country of origin, it's how the item performs that matters. I've experienced plenty of fine engineering products from the Indian sub continent, Far East and Pacific Rim countries - and some rubbish from UK, USA, German and Japanese manufacturers. The Gunst bearing works well enough, by most accounts, with the LUK clutch assembly for which it was designed. LUK and B&B assemblies differ significantly, which is doubtless why I've heard a few adverse reports from folks who have tried mating the Gunst bearing to a B&B cover and plate. Don't mix apples and pears. I wouldn't personally have any qualms about using a KYK bearing with a B&B cover and plate, but that's just my opinion. Cheers, Alec Quote Link to post Share on other sites
Steve in Dublin Posted February 22, 2012 Report Share Posted February 22, 2012 Plenty of experience with 'uprated' bearings. Be careful which plate you use. I figured it won't work correctly with a Laycock plate. See this thread I created a while back http://www.tr-register.co.uk/forums/index.php?showtopic=32233 Quote Link to post Share on other sites
Alec Pringle Posted February 22, 2012 Report Share Posted February 22, 2012 I'd suggest your thoughts are reasonable Steve, I too would prefer an original type bearing with a Laycock assembly. I don't, however, reckon that there will be any problem with the KYK bearing and B&B assembly. For what it's worth, my clutch rebuilder chappies are of similar view on both counts, and they know a damn sight more about clutches than I do !! Cheers, Alec Quote Link to post Share on other sites
Steve in Dublin Posted February 22, 2012 Report Share Posted February 22, 2012 (edited) I would agree with that as the fingers on the B&B plate sit proud\high enough for lip on the bearing to make decent contact. A few seem to have some issue with the B&B but apart from being heavier and then only a little heavier, I can't see the problem The Borg & Beck always reminds me of that episode of the Simpsons where Homer goes to the gym and only works out one arm...maybe I have the something similar Borg & Beck leg! Edited February 22, 2012 by Steve in Dublin Quote Link to post Share on other sites
Alec Pringle Posted February 22, 2012 Report Share Posted February 22, 2012 Hi Steve, I've never had a problem with a B&B clutch, not on any TR and not on anything else either. As for pedal pressure, anyone who grumbles about a TR6 clutch hasn't driven a V8 Wedge, and as for my wife's ruddy dragster, I'd rather not think about the force required on that specialist multi-plate clutch - think quadruple the pressure of a TR6, at least ! Cheers, Alec Quote Link to post Share on other sites
johnny250 Posted February 24, 2012 Report Share Posted February 24, 2012 Some release bearing comparisons...... Quote Link to post Share on other sites
Alec Pringle Posted February 24, 2012 Report Share Posted February 24, 2012 Thanks John, useful to see the 3 bearings side by side. In the past I've been told by several 'usually reliable' TR specialists that the Koyo and/or KYK bearings were the way to go. No question they are both decent manufacturers. Hence I accepted the recommendations. Having subsequently compared the diaphragm finger profiles of B&B and Laycock clutches with the various bearings, I don't see a problem with utilising any of the 3 in conjunction with the B&B cover. I am not now, however, persuaded that the larger bearings are in fact appropriate to the old Laycock cover - I'd prefer to stick with the RHP original specification. Just my opinion ! Cheers, Alec Quote Link to post Share on other sites
Anschutz Posted March 5, 2012 Report Share Posted March 5, 2012 Oh dear I've just fitted a KYK bearing with a Laycock plate and cover! Ok so far though, fingers crossed. Quote Link to post Share on other sites
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