AuthorTopic: range rover classic auto box?  (Read 1863 times)

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Offline JIMBOBLY

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range rover classic auto box?
« on: December 03, 2012, 19:19:29 »
what do i need to do,to covert a 3.5efi 3 speed,to the zf 4 speed box,as in which torque converter flex plate and so on,and i have a 3.9 v8 engine,will the ancillaries such as starter and distributor fit the 3.5?,any help much appreciated

Offline Range Rover Blues

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Re: range rover classic auto box?
« Reply #1 on: December 05, 2012, 16:11:52 »
Dizzy is a better unit but may have a different map.  The starter is fine as is the alternator and most other stuff.

Not familiar with the 3 speed auto but the crank is standard, the flex plate has an adapter which can be a swine to remove, held on with 6 cap headed screws, after that you need the various bits of the flex plate assembly, rather than guess wrong I'll suggest you look it up somewhere, it's been a while since I looked at one.

From memory though I think there is the adapter, starter ring then a hooge spacer followed by the flex drive plate and a reinforcing ring.
Ashcroft's now make flex plates from spring steel, worth fitting a new one.

I did have a spare one somewhere but if I ever get on with it I'm converting the LSE to P38 4.6 spec.
Blue,  1988  Range Rover 3.5 EFi with plenty of toys bolted on
Chuggaboom, 1995 Range Rover Classic
1995 Range Rover Classic Vogue LSE with 5 big sticks of Blackpool rock under the bonnet.

Offline James.Harwood

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Re: range rover classic auto box?
« Reply #2 on: December 10, 2012, 19:05:41 »
I think the ZF 4 speed is controlled by the ecu, not sure about the 3 speed though.

Offline Range Rover Blues

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Re: range rover classic auto box?
« Reply #3 on: January 24, 2013, 14:19:12 »
Not on a classic, it's the P38 that got the electricery box.  The 4.0 was basically the same with electro-hydraulic control and hte 4.6 got the bigger HP24 electronic box.

Look at Ashcroft's website for more info.
Blue,  1988  Range Rover 3.5 EFi with plenty of toys bolted on
Chuggaboom, 1995 Range Rover Classic
1995 Range Rover Classic Vogue LSE with 5 big sticks of Blackpool rock under the bonnet.