Range Rover 3.9 to 4.6 conversion
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- Lasse Kristensen
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- Posts: 32
- Joined: Mon Jan 26, 2009 5:22 pm
- Location: Denmark
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Range Rover 3.9 to 4.6 conversion
Hello all.
As mentioned in another thread, I have a 3,9 Range Rover which needs a bit of TLC. I have another 3,9 in the garage, which only needs a new waterpump. I thought about upgrading the camshaft thoug.
Then I came across a salvage yard, who has a LSE 4,6 litre standing, with 105.000km on the clock.
How much work is it to swap the 3,9 for this engine? I think I figured this much out :
Sump and oil pickup pipe from 3,9.
Serpentine front end from 3,9 - if I continue to drive EFi? Does it run well with the 3,9 EFi? Or would it be easier to maintain the 4,6 standard injection?
Thanks in advance for the help.
As mentioned in another thread, I have a 3,9 Range Rover which needs a bit of TLC. I have another 3,9 in the garage, which only needs a new waterpump. I thought about upgrading the camshaft thoug.
Then I came across a salvage yard, who has a LSE 4,6 litre standing, with 105.000km on the clock.
How much work is it to swap the 3,9 for this engine? I think I figured this much out :
Sump and oil pickup pipe from 3,9.
Serpentine front end from 3,9 - if I continue to drive EFi? Does it run well with the 3,9 EFi? Or would it be easier to maintain the 4,6 standard injection?
Thanks in advance for the help.
Best regards, Lasse Kristensen
- Aerodynamics was invented by people who couldn't build decent engines
- Aerodynamics was invented by people who couldn't build decent engines
- Lasse Kristensen
- Newbie
- Posts: 32
- Joined: Mon Jan 26, 2009 5:22 pm
- Location: Denmark
- Contact:
To use the 4.6, you would need to keep the following from the 3.9:
Sump
Front cover & ancillaries
Inlet manifold & injection system
You would need to change the camshaft (and followers) for one suitable for driving a distributor.
You would need a spacer on the crankshaft at the pulley end (it is like a sleeve about 30mm long)
I don't know how well the 3.9EFi system would work on the 4.6. Maybe a MegaSquirt ECU would allow you to remap it properly.
Chris.
Sump
Front cover & ancillaries
Inlet manifold & injection system
You would need to change the camshaft (and followers) for one suitable for driving a distributor.
You would need a spacer on the crankshaft at the pulley end (it is like a sleeve about 30mm long)
I don't know how well the 3.9EFi system would work on the 4.6. Maybe a MegaSquirt ECU would allow you to remap it properly.
Chris.
--
Series IIA 4.6 V8
R/R P38 4.6 V8
R/R L405 4.4 SDV8
Series IIA 4.6 V8
R/R P38 4.6 V8
R/R L405 4.4 SDV8
- Lasse Kristensen
- Newbie
- Posts: 32
- Joined: Mon Jan 26, 2009 5:22 pm
- Location: Denmark
- Contact:
Hi.
Okay, thanks. The spacer will need to be fabricated or? I haven't dismantled my 3,9 yet. I'll see what the asking price for the 4,6 is. Megasquirt would be an option yes, I know a few people who meddles with these DIY Ucu's...
Okay, thanks. The spacer will need to be fabricated or? I haven't dismantled my 3,9 yet. I'll see what the asking price for the 4,6 is. Megasquirt would be an option yes, I know a few people who meddles with these DIY Ucu's...
Best regards, Lasse Kristensen
- Aerodynamics was invented by people who couldn't build decent engines
- Aerodynamics was invented by people who couldn't build decent engines
- Lasse Kristensen
- Newbie
- Posts: 32
- Joined: Mon Jan 26, 2009 5:22 pm
- Location: Denmark
- Contact: