PeterH Posted February 25, 2019 Report Share Posted February 25, 2019 To replace a couple of rather 'tired' studs that hold the spring onto the diff. (Mk3 Spitfire), I bought some new ones under the part number given in the parts book (136818) But they have come in considerably longer - 4,1/8" compared to 3,1/4" for the original. Are they acceptable ? Link to comment Share on other sites More sharing options...
trigolf Posted February 25, 2019 Report Share Posted February 25, 2019 I wonder if they are for use with the swing spring pivot box on MK4 Spitfire, Mk3 swing spring GT6. ? Gav Link to comment Share on other sites More sharing options...
johny Posted February 25, 2019 Report Share Posted February 25, 2019 I would say youve been sent the wrong part. Looking at Rimmers you seem to have 131008 for the later swing spring back axle or possibly what you would need if fitting a suspension lowering block between the diff and spring on your car. It might work but I suspect if youre not using said block you'll run out of thread before the nuts are fully done up so best go back to the supplier..... Link to comment Share on other sites More sharing options...
PeterH Posted February 26, 2019 Author Report Share Posted February 26, 2019 They came from Canley's. I've asked them to confirm if they are correct. Link to comment Share on other sites More sharing options...
PeterH Posted February 26, 2019 Author Report Share Posted February 26, 2019 They say this is what they sell - and have never been told it is too long. Link to comment Share on other sites More sharing options...
Gary Flinn Posted February 26, 2019 Report Share Posted February 26, 2019 Does your rear spring comprise of 7 leaves? If so I suspect the studs may be too long, most Heralds and Vitesses have springs comprising 11 Leaves, are correspondingly thicker and require longer studs? You could probably use them if you use spacer Washers or cut them down but it does sound like they may be too long. Gary Link to comment Share on other sites More sharing options...
johny Posted February 26, 2019 Report Share Posted February 26, 2019 two choices: try fitting them or ask for your money back and buy at Rimmers (theyre 2.40each and it might be worth asking them the length beforehand) Link to comment Share on other sites More sharing options...
johny Posted February 26, 2019 Report Share Posted February 26, 2019 or ask Canley how long their 131008 studs for the later Spitfires are as thats almost certainly the ones theyre confusing it with. In fact Ive just seen that theyre showing as out of stock for 136818 (and even more expensive than Rimmers!) so could they be giving you the longer ones instead, surely not😲 Link to comment Share on other sites More sharing options...
Pete Lewis Posted February 26, 2019 Report Share Posted February 26, 2019 the unthreaded shank looks too long , even if you cut them shorter you may need some spacer washers ...not recomended they are not listed in the hardware catalogue so that doesnt help rimmers sell for most applications 131008 and 131008long for drop plates etc 136818 is more restricted to include spit 111 6 leaf . its not unusual to use the same base number with a suffix might be where the supply has gone wrong ??? Pete Link to comment Share on other sites More sharing options...
PeterH Posted February 26, 2019 Author Report Share Posted February 26, 2019 As supplied the thread was not long enough, would need about 1/8" spacer perhaps more. Fortunately I have a 3/8" UNF die, so I've cut the thread to match the original. I will let Canley know they need to check their stock. Link to comment Share on other sites More sharing options...
Colin Lindsay Posted February 26, 2019 Report Share Posted February 26, 2019 2 hours ago, PeterH said: They say this is what they sell - and have never been told it is too long. A few years back I queried a Herald wiring loom that had over six feet of purple cable for the driver's side courtesy light switch; it only required about six inches.The manufacturer told me that he had supplied hundreds, and no-one else ever complained... but to his credit he told me that now he was aware, he'd shorten all accordingly. Maybe now THEY know about the diff studs, too.... Link to comment Share on other sites More sharing options...
johny Posted February 26, 2019 Report Share Posted February 26, 2019 Like you I might have given them the benefit of the doubt until I saw theyre out of stock of the correct ones. Neither Rimmers or Paddocks have any problem distinguishing between the two types..... Link to comment Share on other sites More sharing options...
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