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Showing results for tags 'knocking'.
I have a 1972 Spitfire, restored by a PO about 10 years ago, the drive shaft UJ's replaced some 8 years ago, some 3000 miles of travel since then. In the last couple of years the car has developed a rear end knocking noise that is relational to road speed. Only noticeable at low speeds and mostly appears once car has run a mile or so. I have not been able to trace it. I have a tame professional mechanic who had his own garage with years of experience with classic cars. He has not been able to trace it, mind you it seems to dissappear for a few miles once he has had his hands on checking the rear end. He tells me not to worry, old cars have rattles and knocks. I still drive it but am concerned that it will reveal itself when something brakes. My question to the forum is whether there is something about the Spitfire rear end drive geometry that could mask worn UJs or UJ float from such a mechanic? He is very experienced with Minis. Has restored cars and at least one GT6 so does know his stuff. I am going to get him to do my pre-season safety check soon, so are there any suggestions the forum could give me to pass on. I have waded through this topic reading all the knocking stories! The one that seems most likely is whether it needs wider gauge clips to stop end float.
Would be so grateful for some advice on this. Concerns my Triumph Spitfire 1500 (1977). Getting a noise as the title suggests - not a rhythmical, consistent knocking sound, it's a more random crunching/clattering sound which doesn't seem to be related to speed/particular gears/cornering/braking. I expected to find something loose getting caught up in the drivetrain somewhere, like you would expect a bag of bolts going round and round one of the rotating parts to sound, but again there's nothing immediately obvious visually. Really baffled. I've ruled out UJs, wheel bearings and prop shaft. The diff would be the obvious candidate but it's already been reconditioned (by a specialist firm) recently after becoming worn and producing the classic rhythmic knocking sound. The guy who reinstalled the diff (mechanic relation of mine) assures me that he doesn't believe this NEW noise is coming from there. But after poking around he is talking about checking the leaf spring first and seeing if anything stems from that, but I just can't see how a rotational sort of noise could be anything do do with the leaf spring or suspension... I fully agree there may be another noise coming from the suspension at the moment, but I think it's two separate issues. Can anyone advise on the right course of action before I go on an expensive wild goose chase?! If anyone is near Eastbourne and thinks they might be able to lend an expert opinion, let me know! Or if anyone recommends a specialist near Eastbourne that could also be very helpful. Cheers Ben