A TR7 16V Posted July 27, 2019 Share Posted July 27, 2019 I have a 1970 13/60 diff where one of the inner halfshafts has sheared, but is otherwise repairable. I think this will be part number 149117. Any suggest for where I might find one without disassembling a complete diff to rob it. If that's the way, does anyone have an easy way to spot the later diff from the early ones from pics on eBay? Graham Quote Link to comment Share on other sites More sharing options...
Casper Posted July 27, 2019 Share Posted July 27, 2019 If it is a GA with a number under 237600, GB under 57202 or FC under 120000 then it is the early thin inner shaft type. Later numbers are the stronger shaft C. Quote Link to comment Share on other sites More sharing options...
A TR7 16V Posted July 27, 2019 Author Share Posted July 27, 2019 Pretty sure it's the later, stronger type. Graham Quote Link to comment Share on other sites More sharing options...
glang Posted July 27, 2019 Share Posted July 27, 2019 The explanation in Canleys technical archive is pretty good and theres one on ebay at the moment but not sure without contacting the vendor whether its right or not..... Quote Link to comment Share on other sites More sharing options...
A TR7 16V Posted July 27, 2019 Author Share Posted July 27, 2019 Quoted from glang- The explanation in Canleys technical archive is pretty good and theres one on ebay at the moment but not sure without contacting the vendor whether its right or not..... The one on eBay's an earlier one that I suspect is too weak for the Spit engine I have in the herald - cos I fitted a 1250 diff and it broke in a couple of weeks. Graham Quote Link to comment Share on other sites More sharing options...
A TR7 16V Posted July 27, 2019 Author Share Posted July 27, 2019 Are the holes in the flange different sizes between the early and late inner halfshafts? There's a picture here that seems to show they are, and the vendor of the one on eBay implies they are in saying this is an early one. Graham Quote Link to comment Share on other sites More sharing options...
thescrapman Posted July 27, 2019 Share Posted July 27, 2019 You get thick shafts with both small bolt and large bolt flanges. thin shafts only have small bolt flanges I fitted small bolt thick shaft flanges to a Vitesse 3.89 diff so I didn't have to change the drive shaft flanges in my Mk3 Spitfire Quote Link to comment Share on other sites More sharing options...
A TR7 16V Posted July 28, 2019 Author Share Posted July 28, 2019 Oh. This shaft on eBay may be the thick one I need then after all - I've put the pictures up again one another, and I can't tell for sure. Graham Quote Link to comment Share on other sites More sharing options...
glang Posted July 28, 2019 Share Posted July 28, 2019 Surely the bolt holes have to be the same as yours even if the shaft is the thick type? Maybe you can drill them otherwise your going to have to change the diff half of u/j yokes as well..... Quote Link to comment Share on other sites More sharing options...
Clive Posted July 28, 2019 Share Posted July 28, 2019 Quoted from thescrapman- You get thick shafts with both small bolt and large bolt flanges. thin shafts only have small bolt flanges I fitted small bolt thick shaft flanges to a Vitesse 3.89 diff so I didn't have to change the drive shaft flanges in my Mk3 Spitfire Colin, I think vitesse 1600 are small shaft/big holes. Just to add to the possibilities... Don't the retailers keep recon shafts? I have a resealed big shaft/big holes be here somewhere.... Quote Link to comment Share on other sites More sharing options...
glang Posted July 28, 2019 Share Posted July 28, 2019 Think youre right Clive and although the guy on ebay says Herald/Spitfire it needs measuring up to be sure.... Quote Link to comment Share on other sites More sharing options...
A TR7 16V Posted July 28, 2019 Author Share Posted July 28, 2019 Quoted from glang- Think youre right Clive and although the guy on ebay says Herald/Spitfire it needs measuring up to be sure.... What measurement should I ask him to make? As to hole size, if these are small as he says they either fit my outer shaft or I drill them to fit. Graham Quote Link to comment Share on other sites More sharing options...
glang Posted July 28, 2019 Share Posted July 28, 2019 well it looks like theres quite a few variations such as number of splines, 18 or 20 (the former has an OD of 20mm and the latter unknown but bigger) and the bearing used is different ID 22.2mm or 25mm (this is the second biggest shoulder at the flange end). Hope this helps.... Quote Link to comment Share on other sites More sharing options...
A TR7 16V Posted July 28, 2019 Author Share Posted July 28, 2019 Quoted from glang- well it looks like theres quite a few variations such as number of splines, 18 or 20 (the former has an OD of 20mm and the latter unknown but bigger) and the bearing used is different ID 22.2mm or 25mm (this is the second biggest shoulder at the flange end). Hope this helps.... Is 149117 20 splines, like the one in eBay? I was under the impression the ones from the 1360 and earlier 1200/1250s were the same on that score - I see the pun there, but it was accidental. I'll ask the eBay vendor about the bearing shoulder at the flange end though. Graham Quote Link to comment Share on other sites More sharing options...
glang Posted July 28, 2019 Share Posted July 28, 2019 yes reckon the bearing size is the best indicator as 149117 and onwards use the bigger bearing and with the splines I would count the number your broken shaft has to confirm its the same number as the ebay item..... Quote Link to comment Share on other sites More sharing options...
glang Posted July 28, 2019 Share Posted July 28, 2019 At the end of the day the ebay item isnt going to involve a huge expenditure🤑 Quote Link to comment Share on other sites More sharing options...
.thumb.jpeg.b15b81ef10abeea1c3039ae03c4a9f3a.jpeg)
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.