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Thread: Stumpy R380 transplant to SIIB F/C

  1. #11
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    Arthur

    In your collection of manuals, would you perhaps have the one for the Land Rover 90 2.5 diesel (not 200Tdi) with the short R380? Just interested in the input bearing on that. Addit: Emailed Ashcrofts, the input gear is compatible and the bearing is the same one as the original D1 box. They are so very very helpful at Ashcrofts, Thanks Ashtrans!

    The D1 box I have is 53A with Suffix J

    Diana
    Last edited by Lotz-A-Landies; 25th January 2014 at 12:28 AM. Reason: addit

  2. #12
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    As of Friday afternoon, the R380 box is currently sitting on the bench, cleaned bellhousing removed and partially stripped. If I'm taking the sandwich plate out of the box, is it possible to replace the B type selector yoke with an A type selector quadrant at the same time without taking the sandwich plate apart?

    This image borrowed from Prestos rebuild shows the Defender A type selector top arrowed in blue while the green circle is where the B type Disco selector top and gearstick is located.



    The A type would be better for my project as I'll have to modify the floor with a hump using the B type selector top.

    Diana

  3. #13
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    Bump
    Quote Originally Posted by Lotz-A-Landies View Post
    ... If I'm taking the sandwich plate out of the box, is it possible to replace the B type selector yoke with an A type selector quadrant at the same time without taking the sandwich plate apart? ...
    Is this setector mechanism (and top) exchange possible in this scenario?

    BTW
    A type = Defender
    B type = Disco

  4. #14
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    Was unable to get any gaskets and bearings as the usual suspects were closed on Saturday. So instead of leaving the box open to the elements for a week I took the time to assemble the box with the LT230 and the short bellhousing.

    The overall length of the short R380/LT230 combination (without brake drum/disk) is 120mm longer than the original Series F/C box with an additional 29mm for the bolts in the flange. There is only 150mm clearance behind the original drum and the cross member so fitting the box onto the engine will be problematic.

    The decision that has tobe made is whether to move the cross member or cut out the prop shaft hole through the crossmember the same as in the 110.

    Gear linkage
    The remote control for the gear linkage is a simple replicator bar which takes up a lot of room. The Discovery 1 (53a) gearstick is 300mm further from the bellhousing than the original box. This will require a lot of modification to the floor, not the least being having to raise the floor to clear the replicator bar. Very not ideal.

    Am considering changing to a Defender type A selector if I can find one (as above). My latest idea is to cut the type A remote shaft where the transfer shift mechanism would normally sit, add a nylon bush and seal to the housing and then fit a shaft mechaism using uni joints from steering system. Then mount the original Defender gear selector ball previously amputated from the selector top up at the drivers position.

    Any thoughts?

  5. #15
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    Just thought I'd post up some images of the original gearbox setup taken today to explain everything.

    The gearbox cover in place and removed.



    Floor removed and view to rear showing brake drum and floor support.



    Cross member/prop shaft and space to rear of current box.



    Positions of R380 gearsticks of Disco and Defender (Defer aprox no sample to measure)



    BTW dismantled the box today, no problems with any of the gearsets just need new bearing seals etc.

  6. #16
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    The box is currently stripped and the rear layshaft gear removed. The old primary pinion is off and the new short one waiting for the new bearings that I have on the back seat of the car.

    I don't care how many bits I need, I just want all the ones I need to fit a Defender/'95 RRC selector top on a Disco 1 R380. If I can't modify the Disco internal selector rod by grinding a knotch for the grub screw, then that means I also need the internal selector rod from a Defender/'95 RRC R380 "A type selector".

    Which means most of the things seen in the attached images. (for the other mods see: http://www.aulro.com/afvb/showthread...96#post2075396)
    Attached Images Attached Images

  7. #17
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    A couple of graphics indicating my plan for the modification of the selector top.
    Attached Images Attached Images

  8. #18
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    Selector Rail Adapter & Yolk - Ashcroft Transmissions

    you still lack the support in the casting in the tail casing

  9. #19
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    Quote Originally Posted by Lotz-A-Landies View Post
    As of Friday afternoon, the R380 box is currently sitting on the bench, cleaned bellhousing removed and partially stripped. If I'm taking the sandwich plate out of the box, is it possible to replace the B type selector yoke with an A type selector quadrant at the same time without taking the sandwich plate apart?

    This image borrowed from Prestos rebuild shows the Defender A type selector top arrowed in blue while the green circle is where the B type Disco selector top and gearstick is located.



    The A type would be better for my project as I'll have to modify the floor with a hump using the B type selector top.

    Diana
    You can swap the selector types by just unbolting them and bolting the replacement on, just make sure the selector pin engages the yoke on selector rail.

  10. #20
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    Unfortunately it isn't as easy as that, the selector rod inside the box is shorter in the Disco version than the Defender version. The fitting on the end of the selector rod is also different.

    I have had to bite the bullet and purchase the conversion kit from Ashcrofts

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