15eren Posted July 1, 2019 Report Share Posted July 1, 2019 (edited) Hi all In the near future I will have to rebuild my gearbox because of bad syncro in third gear (changing from 4th to third) - It is an original gearbox with an A-type overdrive. The A-type overdrive is fully rebuilt. Double coupling and a little blipping the gaspedal in between eliminates the problem. When I am there I will of course change the bearings and so on as well. Has anyone experience with the rebuild-kit from Rimmer or other recommandation? Cheers Tage Edited July 1, 2019 by 15eren Quote Link to post Share on other sites
John L Posted July 1, 2019 Report Share Posted July 1, 2019 I got my kit from Moss, after the TR gearbox seminar with recommendation from P Cox. He thought the synchro cones were OK at that time it must 2 years + by now. I would find out which bearings they supply, the Moss ones are not RHP, I think would be worth the extra to get them John Quote Link to post Share on other sites
astontr6 Posted July 2, 2019 Report Share Posted July 2, 2019 13 hours ago, 15eren said: Hi all In the near future I will have to rebuild my gearbox because of bad syncro in third gear (changing from 4th to third) - It is an original gearbox with an A-type overdrive. The A-type overdrive is fully rebuilt. Double coupling and a little blipping the gaspedal in between eliminates the problem. When I am there I will of course change the bearings and so on as well. Has anyone experience with the rebuild-kit from Rimmer or other recommandation? Cheers Tage Hi John, The key supplier for O/D & gearbox parts here in the UK is ORS as they overhaul O/D's and gearboxes and manufactures a lot of the parts themselves as they have originally bought a lot of the original GKN Gear Cutting machine tools as well as originally working for them. They are also able to carry out the 3 bearing lay gear conversion and the bronze clutch bearing carrier conversion both of which I would recommend. I had a major problem with Moss layshafts being soft and after some investigation it appeared that this problem had gone on for years as a number of major UK restorers would not use their gear box parts and described their parts with Anglo Saxon wording!!! That said it all to me! But remember some of those gearbox bearings are expensive and they are not made in China. Bruce. Quote Link to post Share on other sites
Stagpowered Posted July 2, 2019 Report Share Posted July 2, 2019 I have just rebuilt a Stag box (mostly the same internals) but have opted for the more expensive RHP mainshaft bearings and the bastuck synchro rings as my experience on previous rebuilds is the cheap parts are somewhat limited in life expectancy. I certainly found a full set of cheap synchro rings on a Dolomite Sprint box I built some years ago made changing gear extremely difficult to the point I bent a selector fork. Subsequent to that I used good used synchro rings when rebuilding boxes but have now run out of them. So far the bastuck rings (bought from Rimmers) have worked well. Neil Quote Link to post Share on other sites
ed_h Posted July 3, 2019 Report Share Posted July 3, 2019 I'm not sure what all comes in a gearbox rebuild kit, but I don't see how they could anticipate exactly what you'll need. Bearings and seals, sure, but there will likely be other worn or broken parts. I just bought the parts I needed. Ed Quote Link to post Share on other sites
John Morrison Posted July 3, 2019 Report Share Posted July 3, 2019 Do you have the reference number for RHP, grooved. Main shaft bearings? John. Quote Link to post Share on other sites
John L Posted July 3, 2019 Report Share Posted July 3, 2019 (edited) I picked this up from Chris Witor site https://www.chriswitor.com/proddetail.php?prod=58391 This is for a TR 2000, but I think should be the same bearing. Read the numbers off the bearing. John Edited July 3, 2019 by John L Quote Link to post Share on other sites
15eren Posted July 4, 2019 Author Report Share Posted July 4, 2019 (edited) Thanks to all, who has replied till now. I am now considering perhaps to only replace the faulty syncro-rings, and perhaps keep the bearings and seals (if they seem to be OK). It sounds to be very difficult to be sure, that replacement bearings are OK, and if everything else but the syncro-rings are OK, why not just change the syncro-rings? Gearbox-out is after all not that big og a job - 2 hours out and perhaps 2-3 hours in. Have done it 2 times because of clutch-problems. Cheers Tage Edited July 4, 2019 by 15eren Quote Link to post Share on other sites
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