Leyland P76 Owners 2005

Technical Information

Auto's info for P76


Question

Sunday, November 06, 2005
Hi,
the trani slipping like crazy(bloody borg warner 35)
I'm hoping to put in a turbo 700 r4 when i get the time.
For now is there a way to reajust the front bands without taking the trani out??
cheers ,
niko.

Reply

Tue, 8 Nov 2005
Bad news is you need to drop the pan to adjust the front band – but that’s all you have to do (so you can leave it in the car ) .
The P76 workshop manual has one of the best sections on the BW-35 ever written .
The “BW-35” trans are quite reasonable if serviced regularly and kept fed with cool trans fluid (very important) and the P76 V8 version is probably the strongest version made with extra clutches a larger internal main shaft etc .
Later cars were to rehash the V8 P76 box again and call it the BW-40 .
BW had concerns about the toque this new version of the box could absorb and the weak area around the bell housing bolts failing , so Leyland fitted the top braces and lower plate between the pan and housing to prevent the casing failure , later ’40 variants were to also have similar fittings in Fords etc.
Having said that they are not designed for large horsepower or constant “harsh” use (heat usually kills them).
Available 3 speed autos include the BW-65 as used in Rovers which is basically the ’35 with a redesigned case to make some things easier to fix but they are no stronger .
The Rovers also used the GMH trimatic and so have a bell housing to suit a P76 ( they are stronger ) . and finally Range Rovers used a adaptor to fit a Valiant “Toque flight” and these are very strong .
Alternatively , your present options for 4 speed autos are the early non computer controlled T-700 from GMH or you can use a “ZF” from a BMW using a BW-35 bell-housing and adaptor .
BMW “ZF’s” are not as expensive as you think as many BMW’s had them and there is no real demand for them .
Look around and you can find them for $250.00 .
You need to create a tail shaft to suit and the rear mount is different (obviously) but you must use a electronic speedo as the ZF doesn’t have a speedo output at all.
The ZF is the 4 speed auto also used in the late Range Rover’s but it has a very different output shaft and is mounted on a slight angle .
All auto conversions are available from “The Rover Center” in Victoria (9782 2630)
Hope all this helps , now where was that coma ……
Rick

Last updated
Feb, 2006
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