Outer Limits 4x4 Board

Hello.

Im looking to fit some Nissan axles to my challenge truck. Ive spent quite a bit of time searching through the tech on the site and from what I can work out I need a pair of HG41 or possibly HG43 axles as fitted to a GU. I assume im right in thinking these are my best option for a challenge truck on 37 inch (possibly slightly larger in future) tyres? someone please correct me if im wrong.

I Have been ringing around breakers yards in the UK but none of them know if the axles they have are HG41 and seem like they cant be bothered to find out. Can anyone tell me what model years and engine sizes I would find these fitted to in the UK? and which models come with a rear diff lock as standard? ( I understand I will have to fit an ARB to the front) As I cant find it anywhere on the forum. If you could, I may be armed with a little more of the info I need when hunting for the right stuff.

Also how strong are the standard internals? Will they stand up to abuse or will it be best to fit some uprated internals? If so, which are best?

Many thanks.
Steve.

running 37's you would want 4.6 or 4.88's...

HG ? Most nissan diffs I have seen refered to as H233B and H260 etc.
http://www.arbusa.com/alac/215109.pdf shows the various diffs, their size's and what air locker suits etc.

As for what diff came in what seems to be somewhat up in the air.
My TB45 Gu had a H260 in it, A mates had a H233 only a few months different in age.. I have seen all sorts of GU's with both diff types (no noteable difference in the front)

love_mud wrote:HG ? Most nissan diffs I have seen refered to as H233B and H260 etc.
http://www.arbusa.com/alac/215109.pdf shows the various diffs, their size's and what air locker suits etc.

As for what diff came in what seems to be somewhat up in the air.
My TB45 Gu had a H260 in it, A mates had a H233 only a few months different in age.. I have seen all sorts of GU's with both diff types (no noteable difference in the front)

HG - hes reffering to the ratios mentioned on the compliance plates.
HG41 4.1's.

Check the plate on your firewall. If it reads HG41 it's a H233B with 4.11:1 r&P. If it reads HH41 it's an H260 with 4.11:1

Here you can see the differences between H233B and H260's


This is the H260

bogged wrote:

love_mud wrote:HG ? Most nissan diffs I have seen refered to as H233B and H260 etc.
http://www.arbusa.com/alac/215109.pdf shows the various diffs, their size's and what air locker suits etc.

As for what diff came in what seems to be somewhat up in the air.
My TB45 Gu had a H260 in it, A mates had a H233 only a few months different in age.. I have seen all sorts of GU's with both diff types (no noteable difference in the front)

HG - hes reffering to the ratios mentioned on the compliance plates.
HG41 4.1's.

Ahh .. I see now .. why couldn't he just ask what vehicles ran what ratios ?

love_mud wrote:

Ahh .. I see now .. why couldn't he just ask what vehicles ran what ratios ?

Sorry, Probably should have!

So Which trucks run which ratio's?

So it looks as if there is no real logic to which ratio's were fitted to which truck's.

I am aware I will find the axle type on the plate but when I ask the people on the phone at the breakers yards to go and have a look they come up with all sorts of excuses why they cant (probably because its raining) which is where I have my problem. Seems poor business to me but theres not much I can do about that.

I see there is a H233 diff, H260 34 spline and 37 spline. Is there much difference in axle strength/ shaft diameter between the different versions or are they all of similar size just with a different spline? Im keen to get the strongest setup I can as Im having big problems with breakages. Even after throwing big money at my rover axles which has sort of taken the fun out of competing a little.

Thanks for ya help so far guys.

what is the config of your truck there? Engine/box etc...

bogged wrote:running 37's you would want 4.6 or 4.88's...

You may well be right. I run 4.11:1 ring and pinions in my rover axles with 37's so I just looked for something close to the same. But thinking about it, It is a little over geared on the more technical stuff/rock crawls etc. I'll have to give that some thought.

bogged wrote:what is the config of your truck there? Engine/box etc...

Well at the moment its running a slightly tweeked 200 Tdi (very little power) and a std manual box and I'm having axle problems now. In a few months I plan to change to a V8 with auto box so I want to improve the drive line first.

steve 90 wrote:

bogged wrote:running 37's you would want 4.6 or 4.88's...

You may well be right. I run 4.11:1 ring and pinions in my rover axles with 37's so I just looked for something close to the same. But thinking about it, It is a little over geared on the more technical stuff/rock crawls etc. I'll have to give that some thought.

ah ok, reason I was talkin 4.6 etc is thats what Patrols run that run 35+ tires.

There was a lot of GU patrols with RD 2.8 litre turbo diesels sold over there, these come out with 4.6 diff gears over here and I would think they would of there to, these would be much better suited to your needs, or look to ice land for the gears they run there as there are some 5.2:1's over that way
cheers Phill

Some models of Nissan Vans with the 2.7L diesel also used the H233B in the rear with a 5.71 ratio. The pinion flange on these is a similar size to a rover pinion flange which might make adapting your rover drive shaft a bit easier. You would need to swap the patrol diff center in as i think the spline count is different. Only problem with this is that as far as i know, this ratio is not available in reverse rotation which you need for the front.

As the LT230 is available in a few different ratios in high range, you might be able to use a comonly available ratio--4.6 or 4.1 in the Nissan axles and get a lower ratio high range for your LT230--didnt early 4cyl Defenders have a 1.66:1 high range?

Nick

Forgot to mention also, that some models of Cabstar trucks also have the H260 in the rear with 6.71 ratio. Spline count is still 37 spline 1.5" axle shafts as in a Patrol. The diff center is a 2 pinion type. Again, the problem might be finding a matching ratio in reverse rotation to suit the front.

Nick

Woop wrote:Some models of Nissan Vans with the 2.7L diesel also used the H233B in the rear with a 5.71 ratio. The pinion flange on these is a similar size to a rover pinion flange which might make adapting your rover drive shaft a bit easier. You would need to swap the patrol diff center in as i think the spline count is different. Only problem with this is that as far as i know, this ratio is not available in reverse rotation which you need for the front.

As the LT230 is available in a few different ratios in high range, you might be able to use a comonly available ratio--4.6 or 4.1 in the Nissan axles and get a lower ratio high range for your LT230--didnt early 4cyl Defenders have a 1.66:1 high range?

Nick

Thanks for that, They seem to be very hard to find over here. Your right about the early defender ratios. I was thinking the 4.3's would be a good all rounder on 37"s but typically look very rere.