Woody2000 Posted February 25, 2023 Report Share Posted February 25, 2023 Hi guys if I wanted to change from an auto to manual gearbox what type of gearbox do I look for ?? So I can have a look around Does an early mk1 gearbox fit ?? There are some with overdrive and some without ??? thanks Link to comment Share on other sites More sharing options...
Pete Lewis Posted February 25, 2023 Report Share Posted February 25, 2023 the big saloon boxes are pretty much all the same incl TR6 what does vary is the Overdrive 2000 uses mainly J type the 2500 possibly the A type the only difference being their torque capacity there are some silly complications with depth of flywheel/crank back length ( down to age of the engine) and you need a new spigot bearing bush is yours a mk1 mk2 facelift etc Pete Link to comment Share on other sites More sharing options...
Woody2000 Posted February 25, 2023 Author Report Share Posted February 25, 2023 Mines a mk 2 Link to comment Share on other sites More sharing options...
johny Posted February 26, 2023 Report Share Posted February 26, 2023 Did the auto get a different axle ratio at all? Also as discussed on another current thread some ratios of the gearboxes from different cars varies, see here: https://richyrichracing.com/tools/gear-ratio-speed-calculator-for-standard-triumph-drivelines/ Link to comment Share on other sites More sharing options...
thescrapman Posted February 26, 2023 Report Share Posted February 26, 2023 Your car is about change point between A type and J type. find whatever is a good price. you need a relay and loom for an A type you need spacers for the cross member and longer studs for a J type get a saloon box, TR ones are more expensive anyway. different back plate I think. Saloon flywheels are great big heavy things. Perhaps get a few kg shaved off. OD gear sticks are not cheap usually, so perhaps find another solution. Very early (63/64) gearboxes may be different, but don’t think so. Long back and Short back refers to the crank. Mk1 2000 and MK1 PI are long back, rest are short back. Get the right flywheel. You need a short back one. make sure you fit a Mk2 type release bearing carrier and slippers, what ever gearbox you get. fit a new cross shaft pin, and cross drill it as well if you can. Also drill hole in bottom of cross shaft pin hole in fork, so you can get snapped pin out when it breaks again. finally, Lockheed clutch masters are expensive, and use a series 3 Land Rover slave. Much cheaper. Link to comment Share on other sites More sharing options...
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