Volvo specs

[jeep97tj]

How long are Range Rover pinions?

[GRIMACE]

230mm (i think)


dont quote me on that one

[tobbjo]

The R&P gearing is 2.91:1 in 4x4 and 3.44:1 in 6x6.
With the portal's 2.06:1 it makes 5.99:1 and 7.08:1 respectively.

Tobias

[jeep97tj]

AnthonyP is that from the center(as in the thickness middle not as in overall lenght of the diff middle) of the of the housing to the flange.

tobbjo the 6x6 is stronger than the 4x4 due to the extra 2 spider gears?

The diff internals are Range Rover ?? so if i want to regear i just use range rover Ring and Pinions? The axles are Range Rover as well? What model and year?

Thanks

[GRIMACE]

Jeep97tj

I have a complete diff centre sitting in the garage at home I measured from the bolt holes (used to mount the centre to the axle housing) to the end of the input flange and it was approx 230mm

I hope am providing you the info your after

[tobbjo]

tobbjo the 6x6 is stronger than the 4x4 due to the extra 2 spider gears?

The diff internals are Range Rover ?? so if i want to regear i just use range rover Ring and Pinions? The axles are Range Rover as well? What model and year?

Thanks

I have no hands on experience with 6x6 / 4-pin diffs, but reason says they should be stronger. I have not heard of any diff center breakage on these axles, though. CV's, yes, especially with dodgy CV boots and/or loosening portal bolts (they loosen with time so should be checked periodically).
Also I've hear about a rock crawilng competition team who split an axle housing. They are not very strong in torsion, so the weld split. A bit more gusseting och sleeving has made them hold up, I believe.

We have swapped out the complete axles, hubs brakes and all.
RR body, frame engine gearbox and propshafts
303 axles, portals, axle internals, brakes, hubs, wheels.

Tobias

[J Top]

Bill
in Paavo's exploded diagrams there is an item on the pinion which I can not identify.In the first one it is p/n 27 and in the 4 spider one it is p/n33.
It looks like a gear.
Is that motor the same 6 they marineize.
What would a volvo 4x4 weigh?
How come they have so much in common with rover.
J Top

[daddylonglegs]

Shane, The Volve diff is not interchangeable with Range Rover. The onlything they have in common is that they are both spiral bevel ring and pinion.
J top on 6x6 Volvos a type of power take of is bolted on to the middle diff pinion hosing and takes its drive from a gear roughly in the middle between the 2 pinion bearings.
I think a Volvo c303 weighs just over 2 tons empty.
The information I get from those who have tried to research the history of Volvo Portal axles is that they may have been made in England by the Salisbury Axle company. I cannot confirm this but I know that the smaller Volvo Laplander had non portal Salisbury diffs.
This may explain why the portal axles have Rover Girling brake equipment, CV joints with identical internals to LandRover/ RangeRover, and SAE/ Unc bolts and nuts instead of Metric as one would expect from Sweden.

Bill.

[wilsby]

4x4 Volvos weight in at 2 400kg and 6x6 at 2 820, with some variations for different bodies.

Bill, given Paavos pics, what would you change on a 6x6 Volvo to make it really perform?

[daddylonglegs]

Wilsby, I would most definately change the transfercase by fitting a LandRover LT230 and a crawler box. The standard Volvo overall low range 1st gear ratio of 53:1 (c303) and about 63:1 for the 6x6 is nowhere near low enough for the type of abilities I would like to see. I would also like to shorten the wheelbase to about 75 inches plus 39 inches ( 190cm +100cm). I would convert the front suspension to A Frame,centrally pivoted at chassis but rigid at axle with hydraulic over coils for height adjustability and the ability to level the truck on side slopes. I would mount the rear inverted spring pivots on a beam with its own set of locating rods and connected to the chassis frame via hydraulic rams. I would want to fit a conventional bonneted cab to reduce front overhang to zero and lower the overall height. and yes,I would fit bumperwheels and PTO driven belly wheels, or if there were no legal or monetary constraints I would build an 8x8 with all axles about 39 inches apart with 1st and 2nd axles steering.

Bill.