Bill Bourne Posted July 4, 2014 Report Share Posted July 4, 2014 Good morning I have suffered from a clunking at the rear for a while now, nothing too serious and have checked all the usual's. I have CV drives, fairly new splines/hubs - new prop shaft / yokes etc,.and have checked the diff mounts - all good. The last component is the diff and I have a reasonable slack movement at the nose end of the diff when turning the prop shaft. So my suspicion is - planet gears ? - anyway I think its time to have the diff re-built. It's done + 170,000 miles from new and never been touched. So it's done well. I don't want an exchange unit. I would much prefer to have it re-built properly by a specialist. Doe's anyone have any recommendations please ? Thank you best Bill Quote Link to post Share on other sites
Guest ntc Posted July 4, 2014 Report Share Posted July 4, 2014 Bill see pm Quote Link to post Share on other sites
Andrew Smith Posted July 4, 2014 Report Share Posted July 4, 2014 Bill, Pete Cox is one of the best in the business and has recently retired as Director of Moss (London) but still does rebuilds; he's done my 3A's gearbox/OD, axle/half shafts and my last TR6's diff all to a high standard - PM me for his email/telephone number. Speak with Alec Pringle and many other forum users for further recommends for Pete. Cheers Andrew Quote Link to post Share on other sites
peejay4A Posted July 4, 2014 Report Share Posted July 4, 2014 Don't eliminate the rear splines without a double check. Mine are very new but if not really really tight, and with no lube on the taper, they will clonk like a diff. Quote Link to post Share on other sites
Bill Bourne Posted July 4, 2014 Author Report Share Posted July 4, 2014 Hi all Thank you for the replies Neil / Andrew I will follow up - Andrew your mail box is full Pete - yes I've checked those and all OK. Best regards Bill Quote Link to post Share on other sites
RobinTR6 Posted July 4, 2014 Report Share Posted July 4, 2014 Pete Cox did my diff, box and OD this year and another diff , good job reasonable price , good guy. Quote Link to post Share on other sites
Guest ntc Posted July 4, 2014 Report Share Posted July 4, 2014 If you like oil on the floor sorry Quote Link to post Share on other sites
Andrew Smith Posted July 4, 2014 Report Share Posted July 4, 2014 Bill, PMs cleared - will PM you shortly with Pete's POC details. Cheers Andrew Quote Link to post Share on other sites
Alec Pringle Posted July 4, 2014 Report Share Posted July 4, 2014 Pete Cox has rebuilt quite a considerable number of diffs, gearboxes and overdrives for me over many years. These are old units we run, they were rarely perfect and oil tight even when new - and that can be one, two, three hundred thousand miles and anything up to 60 years ago . . . . . Pete isn't perfect either, I've known him make the occasional mistake now and again - and he's always sorted out the problem p d bloody q and at his own expense too. On both counts, in contrast to some specialists I could think of. Value for money wise, he can't be faulted - in my view he seriously underestimates the worth of his endeavours, another contrast to many classic specialists. As many of us can testify, he's also a huge help in lots of other ways when it comes to keeping our old TRs on the road with limited means. He is currently away on holiday, but I do know that his order book was pretty well cleared when he toddled off to Spain so he should be fairly quick in turning round work when he returns. Cheers Alec Quote Link to post Share on other sites
Guest ntc Posted July 4, 2014 Report Share Posted July 4, 2014 You get what you pay for simple as that. Quote Link to post Share on other sites
Alec Pringle Posted July 4, 2014 Report Share Posted July 4, 2014 I'd beg to differ on that score Neil - I've seen some very good jobs and good value from specialists such as Roy Talbot, and I've also seen some total **** rebuilds at wildly inflated prices from some other TR suppliers. It is difficult to credit just how bad a job some commercial folks seem able to make of a gearbox or axle rebuild - speaking now from first hand experience of driving the car with rebuild unit fitted, and then inspecting the assembly on removal. When I say total **** that is just what I mean. Caveat emptor. Cheers Alec Quote Link to post Share on other sites
Guest ntc Posted July 4, 2014 Report Share Posted July 4, 2014 (edited) Hi Alec Stuarts gearbox done by the above leaked to much for me.Not Roy Edited July 4, 2014 by ntc Quote Link to post Share on other sites
simonjrwinter Posted July 5, 2014 Report Share Posted July 5, 2014 +1 for Pete Cox Quote Link to post Share on other sites
keving Posted July 5, 2014 Report Share Posted July 5, 2014 + 2 for Mr Cox Perfect box returned to me quickly, and very reasonable price No complaints at all Quote Link to post Share on other sites
mike3739 Posted July 5, 2014 Report Share Posted July 5, 2014 + 3 For Pete Cox for Diff rebuild still no leaks two years on or it could be 3! Great man to deal with. Cheers Mike Quote Link to post Share on other sites
dj_jones Posted July 6, 2014 Report Share Posted July 6, 2014 Hi, Before you go rebuilding your diff, check out the rear diff mounting studs. I had a clunk on take up in my 4A (have also heard of it on 6's), which sounded like a u/j gone, but it turned out that the weld attaching one of the rear studs to the chassis had snapped. Diff out, and half an hour with a welder, clunk gone. Mine showed itself only when jacked up, if you check it on a ramp, it may not be visible. Quote Link to post Share on other sites
Bill Bourne Posted July 7, 2014 Author Report Share Posted July 7, 2014 Hi all again Andrew - thks for the details - As he's on holiday, I will try Neils suggestion as I need this turned around quickly. I've now taken the diff off - the mounting studs are all very good, but I did find the 2 rear rubber mounts had come way slightly from their metal sleeves, so that can't have helped matters. Nevertheless it must be the diff that's causing the clonking. I've taken the cover off and although I can't go any further - nothing seems amiss, except a small amount of play of the planet gears, but I don't know if that's acceptable or not. I would say in response to the above comments, that it's a bit of a lottery whoever you choose even when you ask all the right questions. You still won't know for sure until it's done & fitted. Anyway I have to make a decision. So off to Lincoln with a diff in the boot. Lets hope, no clonking, no whining and no leaks afterwards. I'll let you know in a week or so. Costs ? - all seem to be about £450/2 days work + parts.That's a big Ouch..but if done right I won't complain. Quote Link to post Share on other sites
Guest ntc Posted July 7, 2014 Report Share Posted July 7, 2014 Bill He will not disappoint Knows his stuff. Quote Link to post Share on other sites
simpson Posted July 10, 2014 Report Share Posted July 10, 2014 Bill are you running wire wheels? If so I am sure it occurred to you that they can be the source of clunking when their splines and hub splines are worn out. Quote Link to post Share on other sites
peejay4A Posted July 10, 2014 Report Share Posted July 10, 2014 Covered in post 4 Quote Link to post Share on other sites
Bill Bourne Posted July 11, 2014 Author Report Share Posted July 11, 2014 Hi All Update - I've taken my diff up to Lincoln and given it to Matt Smith. The diagnosis is, that the planet gear/shaft and bearing carrier are well worn, which would account for my clunking. So in one sense I'm relieved as it supports my belief that all the other possible issues have now been eliminated. The cost ? mm don't know yet, but I'm confident that whatever the cost, it will be money well spent. I'm now just waiting the repairs to be completed, go and collect / then fit with new poly mounts etc, and hopefully all will be resolved. I'll advise more when completed. Best Bill Quote Link to post Share on other sites
Denis Posted July 11, 2014 Report Share Posted July 11, 2014 (edited) Two Diff rebuilds ago I had mine rebuilt after loosing 3 teeth off of the crownwheel (too many standing starts at sprints) by a racing team garage, who asked... "What do you want Lash or whine?" Edited July 12, 2014 by Denis Quote Link to post Share on other sites
Clarkey Posted July 11, 2014 Report Share Posted July 11, 2014 (edited) Mine will be done soon, check out the play in mine [url=http://i744.photobucket.com/albums/xx81/clarkesville2002/IMG_0751_zps8581f58b.mp4][ Edited July 12, 2014 by Clarkey Quote Link to post Share on other sites
Guest ntc Posted July 11, 2014 Report Share Posted July 11, 2014 So much for sending PM's I agree AP time to shut mine down Quote Link to post Share on other sites
Tom Boyd Posted July 11, 2014 Report Share Posted July 11, 2014 What's up now Neil???? Quote Link to post Share on other sites
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