AdamSindrey Posted January 9, 2008 Share Posted January 9, 2008 My Dolomite Sprints diff pin (the one that holds the two small gears in the centre of the diff) has broke... I need another one, been looking around with out any luck yet... Getting fed up of the thing just sitting there on axle stands all becuase of this 3 inch piece of metal!I thought the Dolomite Sprint diff was very similar, if not the same as the bigger Triumphs; Stags, TRs, Big Saloons.... If this is right, then where can I get a diff pin from? Please Help! Ad Link to comment Share on other sites More sharing options...
elm-phoenix Posted January 9, 2008 Share Posted January 9, 2008 can you go to your local macine shop and request one, cheaper than you think, pop to local stainless manafacturer often to get stuff made, and engenerring place to get stuff tapped and little odd bits of metal. Link to comment Share on other sites More sharing options...
AdamSindrey Posted January 9, 2008 Author Share Posted January 9, 2008 TR Imp?I've had 3 break on me, the roll pins break, the Pin slides out, getting broken and chewed up on the way, two gears fall around getting smashed to pieces my crown and pinion! Im welding the next one in place! Link to comment Share on other sites More sharing options...
AdamSindrey Posted January 9, 2008 Author Share Posted January 9, 2008 3 seperate diffs its happend to, 1 1850 and 2 Sprints. Driven hard but still there must be another reason why it happens...Thanks for your help GT Link to comment Share on other sites More sharing options...
AdamSindrey Posted January 9, 2008 Author Share Posted January 9, 2008 If I had the money I would! Is welding the diff solid a sensible substitute? ;D Link to comment Share on other sites More sharing options...
Nick Jones Posted January 12, 2008 Share Posted January 12, 2008 AdamSindrey wrote:If I had the money I would! Is welding the diff solid a sensible substitute? ;DNot really...... makes for very odd handling! Would be very unpleasant as a road car esp. in UK conditions.Are you sure you have a Sprint axle? - 'cos they don't usually break whereas an 1850 axle with a Sprint engine would probably break often! If the diff assembly loads in from the front of the casing it's an 1850 one. The Sprint one is completely different (Salisbury type) and is built directly into the axle housing so to change the diff you have to build one up into the casing which really means taking the whole axle out - and from your description you are not doing this?Nick Link to comment Share on other sites More sharing options...
AdamSindrey Posted January 14, 2008 Author Share Posted January 14, 2008 Had billions of Dolomites now Nick ;D Deffinitely Sprint. With the back plate off you can swap the pin without taking the diff out :)I've got one on it's way to me now ;D Link to comment Share on other sites More sharing options...
Nick Jones Posted January 14, 2008 Share Posted January 14, 2008 Ok, Just checking - no offence meant ;). Not doubting you can change the cross pin without dismantling the diff, but your original post about the two planet gears falling out and getting munched by the CWP was making things sound a bit terminal!On the roll-pin thing, one trick is to use two, one inside the other. The first needs to be a (very) tight fit in the diff carrier and the second a tight fit inside the first. Bit less drastic than welding!Only diff pin I've ever busted was in a Herald 1200 - with tuned 1500 during an autotest. My Sprint one tooks loads of abuse (including autotests)without complaint.Nick Link to comment Share on other sites More sharing options...
AdamSindrey Posted January 16, 2008 Author Share Posted January 16, 2008 I have had it suggested to me that wheel spinning can make the pin (that holds the cross pin in!) break if you wheel spin a fair bit :B Link to comment Share on other sites More sharing options...
AdamSindrey Posted January 17, 2008 Author Share Posted January 17, 2008 Soo what you think causes this? wheel spinning of the 1 tyre fire variety seems plausible enough to me... Link to comment Share on other sites More sharing options...
Nick Jones Posted January 18, 2008 Share Posted January 18, 2008 A friend of mine used to hillclimb a Pilbeam single seater with a fairly angry V8. He discovered that he actually broke fewer driveshafts if he really hooned it off the line with lots of wheel spin (we are talking monstrous slicks here). If he was less violent he risked it bogging and every time it bogged it broke (shattered!) a CV joint......Nick Link to comment Share on other sites More sharing options...
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