Vehicle & Technical > Series Land Rovers

Chaging the Diffs to rangies

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MOTORSPORT_SAFETY:
Hi all

Just been talking to a guy who has just visted next door and he stopped to have a chat about the landy and asked if I was changing the diffs he told me a mate of his did it and it ran better and was quicker.

At the moment im using the axels of the 6cyl that im stripping down, I dont know of any differences on the back as I belive they were the same as a normal 109 and the fronts had bigger brakes that im planning on using with the master cyl from the 6cyl.

Is there much benefit to tweeking the setup, I have a set of free wheeling hubs on the spare axel that I am thinking of useing and I have an overdrive.

Its going to be doing a bit of everythink really from laneing while I still can, to some play days, apart from that its going to see action in forestes as I do motorsport safety and radio and im wanting to do more of the forest based events so will be getting used for that too.

Am I right in guessing that to change the diffs its just a case of checking the no of splinse makeing sure I have the right half shafts and end caps on the hubs or is there more black magic to it than that.

Just thought id ask cos I dont know basicly

All the best and hope your all having a good friday off at least the suns out for a bit up here ( Wirral )

Paul

bezzabsa:
yeah you have the basic idea, just 'ups' the final gearing, ie slower pull away but slightly better top end, also lowers revs when cruising.had the range diffs in the widow, but changed back to series ones as i prefer the standard gearing around town, at 30 with range diffs i had to use 3rd, can now select 4th at 25mph with no snatching.
Down to choice.. I didnt notice any differnce in fuel economy either..

MOTORSPORT_SAFETY:
thanks mate

If thats the case dont think ill waste the time and money on them I dont think id save or gain anything really with the FWH and the overdrive on there at present and its not as if im going to be racing it.

Hmm 109 racer no no stop it im getting ideas now grrrr lol

thanks again mate
Paul

Miniman:
I have ragie diffs in my 88" and when it had the 2.25diesel in it was alot better. I could stay in 4th and go down to 30mph and pull off from that. I have no overdrive so it was ok for me. Off road it was a bit to much on steep hills with it in low box but I think a petrol would be ok. I had 85mph one day on the motorway. It also makes it not screem its tits off to keep up with the traffic. It was alot better on fuel on long distance. I now have a perkins 4203 3.3L engine which only revs to 2300 rpm but its still not bad 60mph tops but loads of grunt. I think if you have a overdrive it will be to much for the box. I have a servo off a 90 and 11" 109 from drums and the brakes are super duper.....

matthew:
Depends on what axle you've got anyway, if you've got a rear Salisbury you can't do it that easily. You'd need to find the rear axle from a 109" stage1 or put a Rover axle on.

Personally unless the vehicle is for 100% tarmac use I wouldn't do it as it raises both the hi and lo ratios, stick with the overdrive or a high ratio transfer box.

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