inchman Posted March 29, 2009 Share Posted March 29, 2009 hi, my 1990 2.5 td 90 is gettin a bit tired ( wouldnt pull a kipper of a greasy pate) so i had the change to buy a 300tdi auto disco ( rotten ). I would like some advice about the following,to put the 300tdi engine and auto box in to the 90, do i mount the gearbox using the disco gearbox member in the same position as the current gearbox/transfer box and use the existing drive shafts and just weld on the engine mounts to suit, or do i position the gearlever high low range lever where i want it and the just weld in the mounting to suit. i want to retain my middle seat. i havent removed either engine or box yet and im sure it will make more scence when ive the 2 boxes out and sitting on the floor side by side. but in the mean time i would like any advice, pit falls or handy tips i can get before i actually start work. ive a well equiped workshop with lift, lathe and milling machine and im pretty handy at using them so a bit of fab dosent worry me. cheers Gary Quote Link to comment Share on other sites More sharing options...
JST Posted March 29, 2009 Share Posted March 29, 2009 300s sit a fair bit fwd on a defender for better weight distribution its better further back likes Jases' here for simplicity i would get a def crossmember or adapt the disco one and mount the gearbox on that in the correct place to suit the props then work fwd to get the engine mount locations. i am not sure where this will put the hi/low lever but if its not in the right place just fit the casting, cant remember the MPN, that goes on the back of the auto box (its the same casting as a manual 300td one) and it hold and locates the hi low lever Quote Link to comment Share on other sites More sharing options...
Jurriaan Posted March 29, 2009 Share Posted March 29, 2009 If your gearbox isn't tired, you can just change over the 300Tdi for the 2.5 TD. Just make sure you have all the correct parts for making the 300Tdi matching to a manual gearbox instead of the automatic. Quote Link to comment Share on other sites More sharing options...
inchman Posted March 30, 2009 Author Share Posted March 30, 2009 thanks for the info, i would like to keep the auto box if i could, think i'll do as jst suggest and mount the box and work forward. cheers Gary Quote Link to comment Share on other sites More sharing options...
bishbosh Posted March 31, 2009 Share Posted March 31, 2009 Disco x member won't fit the defender chassis rails. I did 200 auto into a 90 and mounted the box so the props are the right length and put the engine mounts in to suit. Quote Link to comment Share on other sites More sharing options...
inchman Posted March 31, 2009 Author Share Posted March 31, 2009 Disco x member won't fit the defender chassis rails.I did 200 auto into a 90 and mounted the box so the props are the right length and put the engine mounts in to suit. what member did you use and where did the shifter / gearstick end up ? cheers Gary Quote Link to comment Share on other sites More sharing options...
bishbosh Posted March 31, 2009 Share Posted March 31, 2009 I made a cross member using the defender chassis plates and the disco box section. The gear selector ended here: Clicky Quote Link to comment Share on other sites More sharing options...
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