I need some help in stopping a friends DEFENDER in steep dowslopes........ and have heard that there are guys that can lock the torque converter.
How they do that???
Can be done to a Rover unit???

Thanks :shaking:

Wow!

350, Wow!

What does that mean???

What does that mean???

It means he's a post-whoring retard :rolleyes:

The torque converter can be locked up as it is electronically controlled. Typically they lock up around 55 mph. It would probably be a matter of finding the wire diagram for the Defender, tracing which leads run to the torque-converter and installing a new circuit to activate the torque converter with a switch in the cabin. Words of warning, however...you do not want the torque converter locked up during normal driving or when shifting. It's a quick way to destroy the transmission.

I've only had manual gearboxes, but have taken an interest in the problems of hill decents with auto boxes.

AFAIK, you don't want to modify the torque convertor lock-up for use during steep hill decents, because the lock-up mechanism will not handle the torque.

There is a place in Australia that has fitted a one-directional (sprag) clutch to provide engine braking ie. the sprag clutch transmits the engine braking torque instead of the torque convertor. This mod has been done to a zf auto in a rover.

The driving technique for steep hill decents with autos is to brake with your left foot and use just enough right foot on the skinny pedal to prevent the brakes from locking-up.

I agree with DieLucas on this one. Manually locking the TC is common on Ford Diesel Trucks. Basically as DieLucas mentioned you find the wire from the computer that sends the signal to the TC that tells it to lock up. Shouldn't be too hard to locate with a wiring diagram.

Be sure to post up your findings on this one, sounds interesting.

so my best bet is trying to fing that Ausie that Bush65 told us about as see how he made it.
If he knows how to reach him please give me his address
THANKS :grinpimp:

bzzzz wrong. no electrc locup.

bzzzz wrong. no electrc locup.

My mistake...

...could the torque-converter from a Disco 1 be employed in the Defender ZF?

A Disco 1 has the same non electric tranny in the early years. Most if not all D-90 have hydralic trannys. Which is better anyway. Of course, I am speaking for the US market, I guess some of the newer D-90's have electric trannys.

A Disco 1 has the same non electric tranny in the early years...

So my torque-converter locking up was hydraulically controlled? Must be a pump driven off the output shaft then...(so I'd imagine it would lock up in low-range at the same output-shaft rpm as 55 mph in high-range).

so my best bet is trying to fing that Ausie that Bush65 told us about as see how he made it.
If he knows how to reach him please give me his address
THANKS :grinpimp:


CyberSniper - I am the Aussie (or one of them) with the one way sprag type mechanism on my ZFAuto in a Range Rover :D Here is a link to the info on it.
So far I have been quiet impressed with it and onroad its not so bad, I wouldnt advise droping the gears to slow yourself down thou :D

http://www.outerlimits4x4.com/PHP_Modules/phpBB2/viewtopic.php?t=16478&highlight=torque+convertor+lock

Read that thread link I posted - MQ080 is the actually guy that done the conversion, all he needed was my torque convertor, he modified it and Then I put it back in and walla all done.

Alot of my feedback can be found in the thread.

Cheers
Anthony

I learned to do as bush65 mentioned....as when I first bought the rangie, it would stall for some reason(vacuum hose was shot).
Very slight braking with the left foot and a touch of gas works wonders.....doesn't quite feel right to do it, but it does work in a pinch.