Discussion
The RR engine has a deeper water pump with a longer nose but I dunno if that will stop the operation. Or else you could change over the front cover and use the standard SDi one.
I have an RR engine and might measure it back=front if I get time...
Other than that the rest of it looks fairly standard athough if you're lucky you might get a 11.5" clutch.
I have an RR engine and might measure it back=front if I get time...
Other than that the rest of it looks fairly standard athough if you're lucky you might get a 11.5" clutch.
AFAIK the RR3.9's was hotwire, also AFAIK all 350i's was flapper.
So you would need to use your inlet, injectors etc if you want to keep it a flapper, and use your current ECU and wiring.
As said the water-pump is different, so may not fit under the bonnet, but also as pointed out you can change the front cover and other bits over.
You also may want to swap the camshaft while you have it apart.
So you would need to use your inlet, injectors etc if you want to keep it a flapper, and use your current ECU and wiring.
As said the water-pump is different, so may not fit under the bonnet, but also as pointed out you can change the front cover and other bits over.
You also may want to swap the camshaft while you have it apart.
Fuel Injection system is different (hotwire), ancillery drives will be different, sump is different (larger capacity).
Will have a relatively mild cam in too, with it being a RR engine - optimised for torque.
Depending on the age of engine, it may well be set up for lamda sensors too (catalyst car) although a change of tune resistor can be used to tell the ECU to ignore the lamda input (and tell it it's driving a manual box).
Flywheel will be heavier, most likely non-existant as most were autos (flexplate).
If you're considering this as an 'upgrade' to the standard 3.5, you'll probably find it's a bit of a downgrade. The vitesse spec 3.5 is a more powerful engine than a Range Rover spec 3.9.
ECU incidentally is mounted on the swing down flap in the passenger foot-well.
Will have a relatively mild cam in too, with it being a RR engine - optimised for torque.
Depending on the age of engine, it may well be set up for lamda sensors too (catalyst car) although a change of tune resistor can be used to tell the ECU to ignore the lamda input (and tell it it's driving a manual box).
Flywheel will be heavier, most likely non-existant as most were autos (flexplate).
If you're considering this as an 'upgrade' to the standard 3.5, you'll probably find it's a bit of a downgrade. The vitesse spec 3.5 is a more powerful engine than a Range Rover spec 3.9.
ECU incidentally is mounted on the swing down flap in the passenger foot-well.
voltage_maxx said:
If you're considering this as an 'upgrade' to the standard 3.5, you'll probably find it's a bit of a downgrade. The vitesse spec 3.5 is a more powerful engine than a Range Rover spec 3.9.
With a Camshaft change you get 220 BHP + from a RR 3.9 so can be a cheap upgrade, plus easy to do if your stripping it down to a short block( Block, crank, pistons, heads) and fitting all the 350i bits onto it.TVRleigh_BBWR said:
With a Camshaft change you get 220 BHP + from a RR 3.9 so can be a cheap upgrade, plus easy to do if your stripping it down to a short block( Block, crank, pistons, heads) and fitting all the 350i bits onto it.
Granted 
But as a straight swap, like for like, the standard 350i engine should out BHP it.adam quantrill said:
No way! Under the drivers seat.
Rangeys had flappers too didn't they on some vintages?
Adam, mine's definitely on the passenger side on a pull down flap!Rangeys had flappers too didn't they on some vintages?
3.5 Range Rovers were on the flapper system yes, but all 3.9s were on the hotwire system.
There are SOME 3.5 discoveries on hotwire, as the 3.9 was kept out of the discovery to give more 'distance' between the vehicles. Of course by this point the superior hotwire system had come in, so some discoveries got a 3.5 EFI system!
Gassing Station | Wedges | Top of Page | What's New | My Stuff