classic range rover diesel conversion

ArmyRover

Adventurer
There is a guy on D-90.com selling a few re-geared transfer cases, one was a diesel defender unit and the other was a lt230 with the ashcroft 1.6 gear kit in it.
 

ini88

Adventurer
You can get a 1.6 geared transfercase out of a military Defender or any 2.5na truck. Search the UK for one. should be plenty.
 

REDROVER

Explorer
i am afraid if i put the 6 speed and re gear the tcase then. it will be to much.

i was thinking to try first with 6 speed and normal tcase then if it needs more i will do the option you gave or re gear option

ERIC
 

REDROVER

Explorer
right now i am 24 on the city and 17 highway. if i can add 2 more gears and get 24 on the highway i will be set.

i am sure it is posible with 6 gears to hit 25+ mpg highway

however i am doing this 6 speed change for 70+ mph use, for the streets and up to 60 mph zf 22 is beautiful

i wanna take my rover and see how much does it wt. i think over 6500 lb
 

burn_e

Adventurer
I love the conversion and was a subscriber from beginning. You clearly don't shy away from a technical challange.

Looking at the numbers of the fuel consumption I assume that your mpg killer is the wind drag (24 city and 17 highway).

Did you consider relocating your tyre on the bonnet and re-arranging your roofrack so that you can use a wind deflector?
And last but not least you have to ask yourself: Do I need(!) MT tyres?

If it is just about improving your mpg - this would make most probably the biggest difference instantly.
If you want to take on the challenge of the gear box swap (just because you can) carry on and we will enjoy following your thread.
 

lwg

Member
I would assume with that engine that running it at the higher RPM's on the highway is likely a big hit as well. I'll be real curious as to whether a 6 speed would help. My gut tells me you will see an improvement just not sure how much.

Also are you running an intercooler?
 

REDROVER

Explorer
I would assume with that engine that running it at the higher RPM's on the highway is likely a big hit as well. I'll be real curious as to whether a 6 speed would help. My gut tells me you will see an improvement just not sure how much.

Also are you running an intercooler?


6 speed will help for sure . right now on the freeway at 65to 70 mph the engine rpm is 2400, if i had 6+ speed trans it will go down to 1600. and 6.2 diesel has the best fuel economy at 1600 to 1900 rpm

i know my problem is 2400 rpm, it has to come down.

no intercooler its non turbo


ERIC
 

REDROVER

Explorer
I love the conversion and was a subscriber from beginning. You clearly don't shy away from a technical challange.

Looking at the numbers of the fuel consumption I assume that your mpg killer is the wind drag (24 city and 17 highway).

Did you consider relocating your tyre on the bonnet and re-arranging your roofrack so that you can use a wind deflector?
And last but not least you have to ask yourself: Do I need(!) MT tyres?

If it is just about improving your mpg - this would make most probably the biggest difference instantly.
If you want to take on the challenge of the gear box swap (just because you can) carry on and we will enjoy following your thread.


I think i need mt tires since my rover is not street queen . and being used every weekend almost.
 

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burn_e

Adventurer
I think i need mt tires since my rover is not street queen . and being used every weekend almost.

Hey, never doubted that you use your Rangie properly? :)

Keep your MT's!

Still I would give the roof rack a thought. Maybe you can arrange it differently to reduce drag on highways.

Have you considered other options to increase the gearing of your rangie? Transfer case? Differentials?
 

REDROVER

Explorer
Hey, never doubted that you use your Rangie properly? :)

Keep your MT's!

Still I would give the roof rack a thought. Maybe you can arrange it differently to reduce drag on highways.

Have you considered other options to increase the gearing of your rangie? Transfer case? Differentials?

i do understand that tent and the roof rack and the tire all of those dont help getting better mpg. but where em i gonna put the tent or the rack.? no other way. may be i can just leave it there, any ways i go back that way very often lol haha


as far as your post regarding no backing up on mechanical challenges , :) its just part of the fun :)

i guess 17mpg on the freeway is already big increase over the 3.9, 11 mpg but why not make it 25 mpg+

ERIC
 

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