iggy Posted January 20, 2020 Share Posted January 20, 2020 Has the dolomite sprint manual gearbox got a longer second gear compaired to the saloon gearboxs? can i transfer parts from the sprint box into a saloon box if it has? or is there any where i can buy parts to achive the longer second gear ive read there was a leyland stn002 kit available years ago, thanks Quote Link to comment Share on other sites More sharing options...
glang Posted January 20, 2020 Share Posted January 20, 2020 I believe all the ratios in the Sprint are 'longer' as its a close ratio box so first might be too much for a saloon depending on its power, weight and diff ratio. Also, assuming the complete gearset is used, the Sprint clutch will have to be fitted as it has a different number of splines..... Quote Link to comment Share on other sites More sharing options...
iggy Posted January 20, 2020 Author Share Posted January 20, 2020 Ok thanks glang need to find out for definite the sprint ratios, i no the sprint has 3.45 diff ratio for manual box's Quote Link to comment Share on other sites More sharing options...
glang Posted January 20, 2020 Share Posted January 20, 2020 This is where I saw the ratios plus it has the early and later TR6 ratios with the former perhaps being of interest to you: http://www.hottr6.com/triumph/tr6drivetrain.html Quote Link to comment Share on other sites More sharing options...
iggy Posted January 20, 2020 Author Share Posted January 20, 2020 Thats very good bit of information thanks again glang, just 10 mins ago i found a close ratio tr6 gear set for sale on moss triumph web site, weather there gear sets are good quality or not i dont no but the ratios are exactly the same as the dolomite sprint ratios given in the chart on the web site above, it seems even the early or late tr6 gearbox's have slightly taller gearing than the standard saloon box's. the reason im looking into this is my engine produces a fair bit more torque and bhp than standard and i find 2nd gear pretty much hopeless if im giving it some throttle Quote Link to comment Share on other sites More sharing options...
thescrapman Posted January 21, 2020 Share Posted January 21, 2020 Sprint box in a TR6 is very good. I beleive all you need to do is swap input shaft for a later saloon one. Sprint one is longer. Mike Helm has fitted a Sprint box in at least one if his TR6 and my TR6 came with one fitted. I have a spare Sprint box ready for my PI maybe one day. Quote Link to comment Share on other sites More sharing options...
iggy Posted January 21, 2020 Author Share Posted January 21, 2020 Sounds good Colin, Radders did tell me your tr6 came with a sprint box fitted he said it pulls really well in second gear, il be looking for a sprint gearbox now might have to take drive up to ixworth Quote Link to comment Share on other sites More sharing options...
glang Posted January 21, 2020 Share Posted January 21, 2020 I would have thought 1st must be pretty useless as well and you can almost pull away in 2nd so you must already have the 3.45 diff? Quote Link to comment Share on other sites More sharing options...
iggy Posted January 21, 2020 Author Share Posted January 21, 2020 yes i have the 3.45 diff and 1st is pretty useless infact the gearbox really lets the rest of the car down untill you get into 3rd gear, although its one of the quietest smoothest triumph box's ive used or owned its an uprated strong A type overdrive box i bought from Tony lyndsey dean a couple of years ago unfortunatly didnt look into the changing the ratio's before i bought it im sure Tony could have sorted it for me had i known, Quote Link to comment Share on other sites More sharing options...
iggy Posted January 21, 2020 Author Share Posted January 21, 2020 picture of my mk2 saloon as ive not posted on the forum for a long time Quote Link to comment Share on other sites More sharing options...
glang Posted January 21, 2020 Share Posted January 21, 2020 Thinking out of the box, bigger wheels/tyres, if they fit, can make quite a difference. They'll improve every gear but of course also put your speedo out.... Quote Link to comment Share on other sites More sharing options...
iggy Posted January 22, 2020 Author Share Posted January 22, 2020 Yes that would improve the gearing, speedo wouldn't matter to me i have a snooper my speed fitted buy already got 15" rims fitted woudn't want to go any larger 🙂 Quote Link to comment Share on other sites More sharing options...
glang Posted January 22, 2020 Share Posted January 22, 2020 would a 195/80 15 be any improvement and squeeze in there? Quote Link to comment Share on other sites More sharing options...
iggy Posted January 22, 2020 Author Share Posted January 22, 2020 would be very tight i think,best get a sprint box really, should be able to find one, just takes time Quote Link to comment Share on other sites More sharing options...
thescrapman Posted January 22, 2020 Share Posted January 22, 2020 Stoneleigh might yield one, but you may need to be there Saturday for a nose round as a trader. I paid £250 for mine, seemed fair to me. Previous owner purchased it about 20 years ago to fit to a Daimler Dart. It had a snapped cross shaft pin, as does every box I have picked up it seems Quote Link to comment Share on other sites More sharing options...
iggy Posted January 23, 2020 Author Share Posted January 23, 2020 Yes stonleigh is a good idea, id be happy with £250 as well,Yes the cross shaft pins do go fairly often, the box in my car has a roll pin added and seems good so far, how do i identify a proper sprint box? i presume there will be specific part numbers on the casing? Quote Link to comment Share on other sites More sharing options...
glang Posted January 23, 2020 Share Posted January 23, 2020 I think as said earlier the Sprint input shaft is longer and sticks out well past the bell housing unlike all the other types. How about this one thats been on sale for a while and accepts offers, near you? https://www.ebay.co.uk/itm/Triumph-Dolomite-Sprint-4-Speed-Non-Overdrive-Gearbox-Restoration-Rare-Box/383180126950?hash=item593750bae6%3Ag%3AejUAAOSwxJxdj0Xm&LH_ItemCondition=1500%7C2500%7C3000%7C7000%7C10 It would mean using your mainshaft and overdrive as well as input but youve got to open up the box either way.... Quote Link to comment Share on other sites More sharing options...
thescrapman Posted January 23, 2020 Share Posted January 23, 2020 Quick spot if still fitted it the cross shaft is other way up and slave is on a bracket alongside the main casing rather than a bracket on the backplate as per Saloon and TR Quote Link to comment Share on other sites More sharing options...
iggy Posted January 23, 2020 Author Share Posted January 23, 2020 thanks for the info Colin i no what to look for now, looked at that box on ebay and id prefer an overdrive box plus im based in wickford essex, Quote Link to comment Share on other sites More sharing options...
Gt6s Posted January 24, 2020 Share Posted January 24, 2020 Sprint Ist gear is taller same ratios as TR6 Quote Link to comment Share on other sites More sharing options...
glang Posted January 24, 2020 Share Posted January 24, 2020 ooops you could be right as this page https://www.uniquecarsandparts.com.au/specifications/triumph/1973_triumph_dolomite_sprint.htm has the Sprint ratios the same as the later TR6 which was indeed pretty much the same as the earlier model except for a taller 1st. Gavin seems to particularly want a taller 2nd in which case looks like he would have to use the close ratio gearset sold by Rimmers and others.... Quote Link to comment Share on other sites More sharing options...
iggy Posted January 24, 2020 Author Share Posted January 24, 2020 glang if you look at the first link you sent me the sprint gearbox ratios are there in the ratio chart, moss europe and rimmers sell close ratio gear sets for the Tr6 gearbox which are exactly the same as the standard sprint gearbox 1st 2.19:1 2nd 1.57:1 3rd 1.23:1 4th 1:1 Quote Link to comment Share on other sites More sharing options...
glang Posted January 24, 2020 Share Posted January 24, 2020 sorry think that page was talking about the close ratio gears. Have a look at this one which has all the definitive ratios: https://richyrichracing.com/tools/gear-ratio-speed-calculator-for-standard-triumph-drivelines/ Quote Link to comment Share on other sites More sharing options...
iggy Posted January 24, 2020 Author Share Posted January 24, 2020 ive read that page again and in the paragraph close ratio gears above the ratio chart he's refering to the ways of obtaining a close ratio gear set for a tr6 box, he then say's the readily available sprint gear set for 600 dollers to me this means cause its a readily available standard sprint box easy to aquire rather than paying out alot more for specialist gear sets in the chart below, Quote Link to comment Share on other sites More sharing options...
glang Posted January 24, 2020 Share Posted January 24, 2020 ok but my last link uses Mintylamb data which has always been the bible so I hope the Sprint gearbox youre looking for doesnt disappoint.... 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.