jiggawhat2k Posted October 31, 2020 Report Share Posted October 31, 2020 Hi there, I'm looking for a pair of inner stub axles in usable condition. Ideally also with the bearing on but on their own works too. Image of what I need attached. I'm rebuilding a herald 4.11 diff with an lsd but the lsd I have is designed for later spitfires and needs the larger spline. Happy to pay a fair price, would also require shipping. Thanks very much as ever! Jim Link to comment Share on other sites More sharing options...
NonMember Posted October 31, 2020 Report Share Posted October 31, 2020 I may have some in a box. Do you need the small or large flange? (I'm pretty sure the large spline ones could be either) Link to comment Share on other sites More sharing options...
jiggawhat2k Posted November 1, 2020 Author Report Share Posted November 1, 2020 Ah thank you, very kind of you to check. I'm fitting them to a 13 60 herald 4.11 diff case which I assume is small flange? I've never taken these diffs apart before so am still working out the variants! Cheers Jim Link to comment Share on other sites More sharing options...
johny Posted November 1, 2020 Report Share Posted November 1, 2020 Looking at this page I think the flanges are the same size but theres two sizes of bolts used. On a 13/60 diff (serial nº GE?) the bolt holes should be smaller but splines large.... https://www.canleyclassics.com/?archive=different-differentials Link to comment Share on other sites More sharing options...
jiggawhat2k Posted November 1, 2020 Author Report Share Posted November 1, 2020 42 minutes ago, johny said: Looking at this page I think the flanges are the same size but theres two sizes of bolts used. On a 13/60 diff (serial nº GE?) the bolt holes should be smaller but splines large.... https://www.canleyclassics.com/?archive=different-differentials Great thanks, had a look at the link - the diff has a GA stamp so is from an early Herald. The new internals of the diff are for a big quarter shaft. Based on that, I'd need type B or type C I think? Type A Square front pinion flange. 5/16 bolt holes all round (1/2 AF spanner size). Small quarter shaft diameter inside. Casing no's G, Y, GA, FC to 120,000. Type B Square front pinion flange. 5/16 bolt holes all round (1/2 AF spanner size). Big quarter shaft diameter inside. Casing no's GE, FC from 120,001. Type C Square front pinion flange. 5/16 bolt holes on front flange (1/2 AF spanner size). 3/8 bolt holes on ourput flanges (9/16 AF spanner size). Casing no HB. Type D Round front pinion flange. 3/8 bolt holes all round (9/16 AF spanner size). Casing no's FH, FK, FR, FD, HC, KC, KD. Thanks for the help guys! Link to comment Share on other sites More sharing options...
johny Posted November 1, 2020 Report Share Posted November 1, 2020 I would say just type B as C has the bigger bolt holes in the output flanges.... Link to comment Share on other sites More sharing options...
KevinR Posted November 1, 2020 Report Share Posted November 1, 2020 The PCD of bolt hole circle on the small and large flanges is different. It’s not just a case of drilling the holes out bigger Link to comment Share on other sites More sharing options...
johny Posted November 1, 2020 Report Share Posted November 1, 2020 Believe Jim wants the smaller holes but bigger splines.... Link to comment Share on other sites More sharing options...
jiggawhat2k Posted November 1, 2020 Author Report Share Posted November 1, 2020 4 minutes ago, johny said: Believe Jim wants the smaller holes but bigger splines.... Correct exactly - the internals are now for large spline, but the case is with the smaller holes/different flange. Thanks all Link to comment Share on other sites More sharing options...
Pete Lewis Posted November 1, 2020 Report Share Posted November 1, 2020 surely if going LSD then you would benefit to change the inner coupling flanges for the 3/8bolt holes ?? the torque/lock might overload the 5/16" bolts Pete Link to comment Share on other sites More sharing options...
jiggawhat2k Posted November 1, 2020 Author Report Share Posted November 1, 2020 8 minutes ago, Pete Lewis said: surely if going LSD then you would benefit to change the inner coupling flanges for the 3/8bolt holes ?? the torque/lock might overload the 5/16" bolts Pete Thanks would that be this part? Or which part from the above? Thanks Link to comment Share on other sites More sharing options...
NonMember Posted November 1, 2020 Report Share Posted November 1, 2020 No, Pete was suggesting you use the "large flange" inner axle shaft (from a type D diff) and swap the UJ flanges (D54aSPT on your second picture) to match. Link to comment Share on other sites More sharing options...
jiggawhat2k Posted November 1, 2020 Author Report Share Posted November 1, 2020 21 minutes ago, NonMember said: No, Pete was suggesting you use the "large flange" inner axle shaft (from a type D diff) and swap the UJ flanges (D54aSPT on your second picture) to match. Right got you. OK that makes sense, and means I can use the large flange large spline variant from a 1500? Link to comment Share on other sites More sharing options...
johny Posted November 1, 2020 Report Share Posted November 1, 2020 Thats it. Depends how much power increase your intending to have and/or if using a LSD is harder on halfshafts? In either case larger bolts wouldnt be a bad idea especially as it sounds the LSD was intended for use with the later stub axles. Saying that though I dont know if its the bolts and flanges that give problems as much as the weaker inner stub axles themselves.... Link to comment Share on other sites More sharing options...
jiggawhat2k Posted November 1, 2020 Author Report Share Posted November 1, 2020 3 hours ago, johny said: Thats it. Depends how much power increase your intending to have and/or if using a LSD is harder on halfshafts? In either case larger bolts wouldnt be a bad idea especially as it sounds the LSD was intended for use with the later stub axles. Saying that though I dont know if its the bolts and flanges that give problems as much as the weaker inner stub axles themselves.... The car will be driven fairly hard once events are back on, there do seem to be recommendations to use the larger spline but not sure on bigger flange. Would make sense to me to go bigger as a precaution? Link to comment Share on other sites More sharing options...
Clive Posted November 1, 2020 Report Share Posted November 1, 2020 5 hours ago, Pete Lewis said: surely if going LSD then you would benefit to change the inner coupling flanges for the 3/8bolt holes ?? the torque/lock might overload the 5/16" bolts Pete Doubtful Subaru diff uses m8 bolts for prop to diff. And I am putting 180+bhp through that pretty often. Saying that, genuine Subaru bolts are very expensive. I opted for cap-head bolts which are 12.9 rated, and bough some long enough that teh unthreaded shank went past the join (which meant bolts a tad too long, so a bit of teh threaded section had to be cut off) I can't see 5/16 bolts struggling with 100bhp 1 Link to comment Share on other sites More sharing options...
NonMember Posted November 7, 2020 Report Share Posted November 7, 2020 Resurrecting this as I found two stub axles and realised I'm not actually sure how to tell (in the absence of a suitable diff to try against) whether they're small or large. They're small hole flanges, which means they're not from the definitely-large-type diff that I thought they'd been removed from. Does anyone know the critical dimension to measure? Link to comment Share on other sites More sharing options...
Pete Lewis Posted November 7, 2020 Report Share Posted November 7, 2020 Rob from the WSMs the larger had 20 tooth splines 22mm dia smaller had 18 tooth splines 20mm dia what fits what i had a vitesse1600 4.11:1 stamped HB with the 20 spline inner shafts , theres a whole scatter if intro com numbers for all models of this change if that helps Pete Link to comment Share on other sites More sharing options...
NonMember Posted November 7, 2020 Report Share Posted November 7, 2020 OK, I'll count the splines. I measured the diameter as 7/8", which sounds like the 20 spline one. Link to comment Share on other sites More sharing options...
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