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Discussion in 'Defender 90 / 110 / 130' started by Dodgydef..., Aug 15, 2019.

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  1. Dodgydef...

    Dodgydef... Member

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    Hi...ive got a 1989 90 .. its been fitted with a 300tdi and r380 box. They fergot to put the gearbox crossmember back. Looking at i dont think the original type will fit. Is there another type that will fit......using original mounting holes. ???
     
  2. lynall

    lynall Well-Known Member

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    Iirc 200tdi has a round x member 300 has a flat box section x member
     
  3. Dodgydef...

    Dodgydef... Member

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    Does the 300tdi..ie ..flat one..bolt up to existing holes in chassis...???
     
  4. tottot

    tottot Well-Known Member

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    I have the later flat one on my 1990 TD. [ now 200tdi ]
     
  5. Rougharse Racing

    Rougharse Racing Well-Known Member

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    If you have a 300tdi and long bell-housing R380 fitted in the standard position, it doesn't have the big cross-member which is held on by four bolts, it has a thinner one held on by the gearbox mounting bolts, like the pic below.


    [​IMG]
     
  6. discomania

    discomania Well-Known Member

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    Do you have the old x-member? You can cut out the tube section and weld in a a piece of RHS.
     
  7. Dodgydef...

    Dodgydef... Member

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    Dont have it but its an option.
     
  8. Dodgydef...

    Dodgydef... Member

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    Not sure which bellhousing it is. How can i tell. ? Box is mounted to chassis.
     
  9. tottot

    tottot Well-Known Member

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    It is normal for gear box's to be at the same position in the chassis, however the engine of ones with the longer bell housing have the engine mounted further forward over the front axle.
     
  10. Rougharse Racing

    Rougharse Racing Well-Known Member

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    There are three possible positions for the engine, which is dictated by the gearbox type, bell housing used and the position of the transfer box.
    Virtually all R380's had the long bell housing irrespective of whether it was in a Discovery or Defender, the exception is the short (stumpy) bell housing used when they were fitted behind 2.5 N/A diesels in military 90/110.
    If it has a short bell housing the engine will be right up against the bulkhead at the rear of the engine bay. It should have the big engine cross member and everything should be the same as an LT77 installation..
    If it has a long bell housing the engine will be right up close to the radiator. In this fitment the transfer box should be two inches further forward than a LT77 installation, which also requires a R380 transmission tunnel, seat box and props. This installation should use the cross member shown in my post above and doesn't have the big engine cross member.
    If they have used the long bell housing and fitted the transfer box in the LT77 position then the engine will be in a different position to any standard Land Rover fitment. A R380 gearbox cross member won't fit and you would be better with an engine cross member of some description.
    It depends on what parts are going to foul on the cross member, but I imagine it is the exhaust. The thinnest cross member is the one from the TD5 and later, which will miss most things, but modifying an older cross member may be cheaper.
    X-members.jpg
     
  11. Al2O3

    Al2O3 Well-Known Member

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    How did they forget to put the gearbox cross member back on :eek:
     
  12. tottot

    tottot Well-Known Member

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    Probably found the original one did not fit, so they just did not bother to sort it. Following Rougharse Racing's suggestions above should sort the problem.
     
    Al2O3 likes this.
  13. Dodgydef...

    Dodgydef... Member

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    Td5 one looks like it should do the job. Thanks for suggestions...and yes..i expect just left it off after finding it didnt fit.
     
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