Peter Posted February 27, 2007 Share Posted February 27, 2007 Does anyone know if the automatic box in a disco 1, 3.9V8 is the same as the disco 1, 300tdi ? Quote Link to comment Share on other sites More sharing options...
BogMonster Posted February 27, 2007 Share Posted February 27, 2007 Yes and no - Yes I do know and no it isn't the same though it is fundamentally the same ZF 4HP22 box, the settings are a bit different The torque converter is different for a start (different stall speed), and I am virtually certain that the shift points are different as well to suit the different characteristics of a diesel engine, though having driven a 300Tdi auto with the "proper" gearbox in I can't see how it could be any worse There may also be other differences, I daresay you could make one fit t'other but how well it would work I don't know. Then again I read somewhere that the change points AND the TC stall are at lower engine rpm on the V8 box and I would say that both of those things are desirable on a diesel as the Tdi auto just seems to be all revs to me, so maybe it would be an improvement Have a word with Ashcrofts would be my advice... Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted February 27, 2007 Share Posted February 27, 2007 Jon W has a 300TDi RR that someone has put a V8 auto box into, I think it replaced a stock TDi version in there. Quote Link to comment Share on other sites More sharing options...
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