Andy Lef Posted July 8, 2013 Share Posted July 8, 2013 I've had it for a while (a very long while - 14 years) and I would be never have worried about it ..... except a friends caterham doesn't have one and I then read stuff on BC - Advice / thoughts would be appreciated. Clonking noise / feeling when I change up and release the clutch (I'm pretty carful and don't bang it out = no noticeable clonking; sometimes being less careful and generally at lower speeds it clonks. is something lose or has it always been lose. It's never mentioned by James W (who looks after it every once in a while - So..............to be worried or not? Andy Edited by - andy lef on 8 Jul 2013 13:04:56 Edited by - andy lef on 8 Jul 2013 13:05:21 Link to comment Share on other sites More sharing options...
Stationary M25 Traveller Posted July 8, 2013 Share Posted July 8, 2013 Do you 'feel' the clonk is in the clutch itself, the clutch operating system, the propshaft or diff, or could it be worn/damaged engine or gearbox mounts ? If the clutch is 14 years old, the springs could be getting a bit tired ! Link to comment Share on other sites More sharing options...
John Alston Posted July 8, 2013 Share Posted July 8, 2013 UJ joint would be my first thought Link to comment Share on other sites More sharing options...
Andy Lef Posted July 8, 2013 Author Share Posted July 8, 2013 Thanks. The clonk appear / feels to be somewhere under or behind my seat area. If it's the UJ, which I guess might be supported by the 'clonk' location what are my check options? If it's, as SM25T suggests, other possible causes then I guess it could it could mean a clutch or gearbox out job? WDYT? Edited by - Andy Lef on 8 Jul 2013 13:52:37 Link to comment Share on other sites More sharing options...
Stationary M25 Traveller Posted July 8, 2013 Share Posted July 8, 2013 Propshaft, diff or rear suspension bushes. Get under car and see if you can feel play in propshaft UJs by turning it by hand, one way then the other. Maybe time to remove the diff and send it to someone like Road & Race for an overhaul. This is quickest way to remove propshaft too. This can be overhauled and balanced by various companies. If this fixes it ..... no need to remove engine. Edited by - Stationary M25 Traveller on 8 Jul 2013 13:56:51 Link to comment Share on other sites More sharing options...
Andy Lef Posted July 8, 2013 Author Share Posted July 8, 2013 many thanks Get under car and see if you can feel play in propshaft UJs by turning it by hand, one way then the other. this I can do - how much play is bad? This one Get under car and see if you can feel play in propshaft UJs by turning it by hand, one way then the other. I may have to outsource as I'm 🙆🏻 at it; no tools , no skills and more importantly with 2 under 3 no time. When I'm not in my suit I'll get under the car and do some jiggling of UJs 😬 Edited by - Andy Lef on 8 Jul 2013 14:24:43 Link to comment Share on other sites More sharing options...
Stationary M25 Traveller Posted July 8, 2013 Share Posted July 8, 2013 There shouldn't be any. Take the car to Richard Young at Automotive Engineering in Uckfield or Andy Belcher of Tech Sevens in Redhill. They can do the work in exchange for your £ Link to comment Share on other sites More sharing options...
Andy Lef Posted July 8, 2013 Author Share Posted July 8, 2013 SM25T Thank you- YHBM Andy Link to comment Share on other sites More sharing options...
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