63:1 crawl ratio in 110 using factory parts

**mark2** · 25th July 2006, 06:55 PM

The LT95 in my V8 County is from a Range Rover and has 1.113 transfer gears. Its a bit tall for the 3.5 - V8 110's ran 1.34 gears as standard.

Now if I fit .996 transfer gears and use 4.7 diff centers from a Series 3, the gearing is almost exactly the same as standard but with the benefit of a 63:1 first low range ratio. (highway rpm @ 100 km/h actually drop by 40 rpm)

Does anyone have some high ratio transfer gears for a LT95 or know where I can get some at the right price? Series 3 diff centers are cheap and easy to get however changing a Salisbury center is a bit daunting......

**TuffRR** · 25th July 2006, 09:09 PM

The 4.7's from series 3's are renowned for being weak. I wouldn't want to do any serious 4wding with those 4.7's. Nothing worse than doing a diff on the trail...

**303gunner** · 25th July 2006, 10:01 PM

And yet this is precisely the gearing used in the Army's 6x6 Perentie, which runs a LT95A gearbox/tcase. I wonder what R&P's they use in the diff?

**Reads90** · 26th July 2006, 05:59 AM

Originally Posted by 303gunner

And yet this is precisely the gearing used in the Army's 6x6 Perentie, which runs a LT95A gearbox/tcase. I wonder what R&P's they use in the diff?

I used Kam 4 .71 ring and pinions in my 90. These are alot stronger than the seris ones but the same ratio.

On the left standard 90 r&r's and on the right 4.71's

Left the Kam one as you can see alot larger

Fitted into the diff. They do them for salisbury diffs too

**rick130** · 26th July 2006, 07:20 AM

Originally Posted by 303gunner

And yet this is precisely the gearing used in the Army's 6x6 Perentie, which runs a LT95A gearbox/tcase. I wonder what R&P's they use in the diff?

remember that the rear diffs are Salisbury's in a Perentie which are miles stronger in 4.7:1 than a Rover CWP in 3.54:1....
IIRC the front Rover CWP is a 'special' pt #. Anyone confirm/deny ?

**Reads90** · 26th July 2006, 07:37 AM

The front diff is the same as the one above , and the slaisbury diff in a seris is alot stronger than the standard diffs. so seris slaisbury diff is fine for off roading but the front one is not

**Tusker** · 26th July 2006, 09:13 AM

Originally Posted by 303gunner

And yet this is precisely the gearing used in the Army's 6x6 Perentie, which runs a LT95A gearbox/tcase. I wonder what R&P's they use in the diff?

The Army 4.7s were upgraded to overcome these issues, even have a different part no. Its been discussed on Pirates before. From memory the army 4.7s are someting like $1500 each..

Regards
Max P

**Reads90** · 26th July 2006, 09:17 AM

Originally Posted by Tusker

The Army 4.7s were upgraded to overcome these issues, even have a different part no. Its been discussed on Pirates before. From memory the army 4.7s are someting like $1500 each..

Regards
Max P

If they are gen Land Rover ones than they are from Kam. as they are the people who supply Land Rover and the british army with them and their lockers

Here they are

http://www.kamdiffs.com/

**mark2** · 26th July 2006, 07:32 PM

Originally Posted by TuffRR

The 4.7's from series 3's are renowned for being weak. I wouldn't want to do any serious 4wding with those 4.7's. Nothing worse than doing a diff on the trail...

I wouldnt expect a rear 4.7 Salisbury to give too many dramas, do 4.7's in the front break all that often when not locked?

**uninformed** · 27th July 2006, 09:01 AM

Originally Posted by Reads90

If they are gen Land Rover ones than they are from Kam. as they are the people who supply Land Rover and the british army with them and their lockers

Here they are

http://www.kamdiffs.com/

no they arn't kams mate...the AUS army landrovers built in the mid 80's till now (still the same ones) were custom built here in AUS buy JRA. they have gal chassis and blah blah blah.

quote from a catalogue"FRONT AXLE... an uprated land rover 110 axle is specified for the 6x6 vehicle. this features a fully floating arrangement with spiral bevel gear drive, reinforced axle casing a heavy duty 4 pinion diff and high strenght axle shafts with involute splines at inboard and outboard ends."

yes the r+p is much stronger than a series gear set and yes it does cost about 1500, these are through LRA but are stock from the mid 80's

i thought kam was looking at suppling santana. either way i'm not impressed by there lockers and otherr things done in the past.

there gears may be ok but you have a choice to buy from ashcroft, kam and GBR in the USA

cheers, Serg

Thread: 63:1 crawl ratio in 110 using factory parts

Thread Tools

63:1 crawl ratio in 110 using factory parts

Bookmarks

Bookmarks

Posting Permissions