It's Alive.

**Dougal** · 16th October 2007, 04:57 PM

Originally Posted by andrew e

Pics of pulling seconds please. Now put on some 35s and repeat......wouldn't those egts melt pistons or somthing?

Dave before you go buyng new diffs, which you will be needing soon.

I'm selling 2 sets of diffs at the moment, 1 pair is out of my buggy, range rover housings with 4.3lsd centers (toyota) high pinion front, jac mac chromolly axles, Haultech heat treated cvs etc etc would almost be a bolt in with minor mods.

The other pair are out of a 2004 Ford F250 superduty, which had a fire in the cab. Dana 60 high pinion front and sterling 10.25 inch rear LSD, 4.1s etc. the front is a LHS pinion, so it needs serious mods to fit, but its possible.

your pick for 2K

I could also help ship either set over the ditch.

Sorry i hope mods dont see this as spam, if so feel free to delete.

Andy

I've just turned the fuel down from "silliness" to "silliness - quarter turn". I haven't had much openroad and when I did a 0-100 run (about 15 seconds) the needle hit 800 deg.

Silliness - quarter turn = stock.

If I could live with lower gearing those axles would be the business. But this weekend I've got about 1300km to do with a party, a wedding, a bit of showing off and mountainbike shuttling in the middle. 2000rpm at 100km/h is bliss.

The scary part, the oil I put in two days ago is still clean and clear.

I get a faint puff of grey smoke when planting the boot from standstill in 2nd gear.

Every drive I come back grinning from ear to ear. Told the wife she's not allowed to drive it now.

**Bush65** · 16th October 2007, 07:00 PM

Originally Posted by 1103.9TDI

John, are you aware of anyone producing a stronger Rover crown wheel and pinion commercially?.

Sorry I can't help with definitive answer.

As the ratio decreases from stock 3.54:1 to after market 4.1:1 or 4.11:1, the pinion diameter is reduced. This increases to tooth load for the same tractive effort at the tyre contact with the road.

So even if the teeth are stronger, they have to endure higher loads.

I prefer 4.11:1 over 4.1: because the 4.11:1 gears have larger, which should be stronger (given material, heat treatment etc are the same).

8" toyota diff centres can be fitted to rover axle housings. Because these have hypoid ring and pinion, they are much stronger than the rover spiral bevel ring and pinion.

**Bush65** · 16th October 2007, 07:09 PM

Originally Posted by Dougal

Thanks for all the advice guys.

It appears lockers and 24spline axles are the go. They were planned eventually, but it'd even be pushing my luck to run what I've got with more boost and fuel. I've got the turbos, manifold and some profiles for the compound turbo setup. It'll be a long and interesting story. First part is fitting the variable vane turbo as a single.

My offroad driving style is on the sensible side of silly. Just.

Unfortunately stronger crown and pinions are almost all lower geared. I don't want to leave 3.54 for now and keep stock tyre size (within reason) due to legality, garaging and the long onroad trips this vehicle does. If I get worried I'll put in a slipper block.

Now which axles and lockers? A 24spline locker and axles will fit my 10spline hubs and carrier with only minor work (air lines etc)?

Rover changed to different carrier bearings with the 24 spline centres. They have a larger bore so that the carrier could be made stronger.

I know that early 10 spline rangies had different carrier bearings to later 10 spline. I'm not sure of the year when this change occurred, but a dim memory says it was when the axle assembly changed from imperial to metric bolts.

You should confirm that the carrier bearings for 24 spline diffs will fit your diff before laying out your hard earned for 24 spline lockers.

Others on this forum may be able to clear up this matter.

**andrew e** · 16th October 2007, 10:01 PM

Originally Posted by 1103.9TDI

John, are you aware of anyone producing a stronger Rover crown wheel and pinion commercially?.

I know KAM do aftermarket crown wheel and pinions from 2.8:1 to 4.7:1. I dont know anyone runing these though, so i can't comment on strength.

Andy

**Dougal** · 17th October 2007, 08:29 AM

Originally Posted by Bush65

Rover changed to different carrier bearings with the 24 spline centres. They have a larger bore so that the carrier could be made stronger.

I know that early 10 spline rangies had different carrier bearings to later 10 spline. I'm not sure of the year when this change occurred, but a dim memory says it was when the axle assembly changed from imperial to metric bolts.

You should confirm that the carrier bearings for 24 spline diffs will fit your diff before laying out your hard earned for 24 spline lockers.

Others on this forum may be able to clear up this matter.

I know the older (early 80's) diffs had an extra filler plug in the neck. I wonder if deleting that corresponds to the change in carrier size?
My 85 is right on the imp/metric changover when they also swapped rear shocks from one forward/one back to both pointing forwards. I've got the later model (86+) chassis, I also have a disco rear axle housing, only change in threads was the spring seats (M10 vs 3/8").

**rovercare** · 17th October 2007, 09:37 AM

Originally Posted by andrew e

I know KAM do aftermarket crown wheel and pinions from 2.8:1 to 4.7:1. I dont know anyone runing these though, so i can't comment on strength.

Andy

I run KAM gears, ain't broken one yet

**Dougal** · 17th October 2007, 02:23 PM

Originally Posted by rovercare

I run KAM gears, ain't broken one yet

I run rover gears and haven't broken one yet.

Oh crap, I just jinxed it.

**1103.9TDI** · 17th October 2007, 05:46 PM

I know KAM do aftermarket crown wheel and pinions from 2.8:1 to 4.7:1. I dont know anyone runing these though, so i can't comment on strength.

Andy

Thanks Andy, I'll look them up.......

**rovercare** · 17th October 2007, 06:11 PM

Originally Posted by Dougal

I run rover gears and haven't broken one yet.

Oh crap, I just jinxed it.

To be honest, on those little tyres, you won't break the standard gears, you probably won't break them on 35's if set up correctly, its just the carriers, cross pins, sun and planetry gears and axles that are the main concern

**DRanged** · 17th October 2007, 07:30 PM

Have broken a standard 3.54-1 CWP running the 35,s but that was with Maxidrive hemispheres. I would imagine a standard hemisphere would not tolerate it as much.

Justin

Thread: It's Alive.

Thread Tools

breakages

Bookmarks

Bookmarks

Posting Permissions