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Borg Warner 35 problems?

Discussion in 'Rover P6 Gearboxes and drivetrain' started by Jakson, Apr 27, 2017.

  1. harveyp6

    harveyp6 Well-Known Member

    First thing, after re-reading your original posting and the problem described in it, I can't see why you've ended up with the valveblock in pieces. If this is a 1969 V8 250, it should be a slim bumper car, and I thought by then they had moved to the PRND21 selector pattern. That later pattern should have the governor line plate, the early PRND2D1L pattern should have a D2-D1 valve instead of the plate. The screws holding the valve block together just have spring washers. They just need to be torqued up. The converter check valve is the ball and spring, and as far as I remember from the last time I looked in the early book, it moved position from where it's shown in the illustrations.
    I wouldn't expect the gearbox to be original even though it's a matching numbers car. The box is 48 years old, and they fail, a lot.
  2. Jakson

    Jakson New Member

    Well I started by draining the oil to drop the sump off and check the servo,but from there it's not a lot more work to remove the valve block,as the car has been standing for a good time it seemed possible there may be a connection with my problem,and now I'm glad I did as even tho it may have no bearing on my problem Il feel a lot happier with spring washers under the 20+ screws holding the block/associated parts together.I take your point on the age of the box and the fact that they fail,the only information I can add is that iv checked in the owners handbook for the V8250 as you say the slim bumper model and it shows the six positions with D2&D1 on the selector and the gearbox number on the certificate I got from Jaguar and on the vin plate and gearbox is 11EG4962,that's all iv got I'm afraid.
  3. rickyv8

    rickyv8 Member

    Stumbled across this post as I also have bw 35 issues, I've had many British classics with this box and never had a problem, 3 p6 v8's, now it's a princess 2200 Auto, did very similar things like change fluid etc but never made a difference, I drove the car round housing estate and on way back I lost all forward gears, I could reverse no problem at speed but nothing forward, went back to car next morning and had all gears again, test drive and went to kick down up a hill but got high revs but not going anywhere fast, kept moving sluggishly until no forward gears at all but cam can still reverse, any ideas on this problem?
  4. harveyp6

    harveyp6 Well-Known Member

    Loss of forward drive is normally a failed front clutch.
  5. trampintransit

    trampintransit New Member

    I apologise for hijacking here....I'm just desperate to speak to someone who knows BW35's. My problem is with an Armstrong Siddeley ...since Harvey seems to be the 'man' in respect of these gearboxes...how can I contact Harvey outwith this group so as not to annoy anyone?
  6. harveyp6

    harveyp6 Well-Known Member

    I'll send you a personal Message.
  7. trampintransit

    trampintransit New Member

    Hang on ..ignore me ..it's a DG not a 35 in my car I think!!!
  8. harveyp6

    harveyp6 Well-Known Member

    I thought it should be. BW35 PRNDL, DG PNDLR (IIRC)
  9. Mike Kimmens

    Mike Kimmens New Member

    Harvey do you run a company repairing the borg warner gearboxes because I'm looking for somebody to have a look at mine Mike
  10. harveyp6

    harveyp6 Well-Known Member

    Somehow I missed this one. I'll send you a PM

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