series diffs fit a rrclassic

Post by **rovers2a** » Tue Jul 27, 2004 10:19 pm

will the series diffs fit into a classic rangie?

Post by **DaveS3** » Tue Jul 27, 2004 11:51 pm

AFAIK - Yes!

Post by **ISUZUROVER** » Wed Jul 28, 2004 1:28 am

The complete diff centre from a series LR will fit into a classic RR but the carriers are different so you can't swap ring and pinions. They both have 10 spline side gears (except the later model Rangies) but the series diffs are 4.7 and the rangie 3.54 ratio. The 4.7's are not as strong as a 3.54 and if you don't take it easy on them you will break them.

Post by **BIG RANGIE** » Wed Jul 28, 2004 3:19 pm

can anyone tell me if i can change ratios in rangie diff from 3.54 to something like 4.11 or more

Post by **HSV Rangie** » Wed Jul 28, 2004 3:23 pm

Some of the discos had 4.1.

Michael.

Post by **BIG RANGIE** » Wed Jul 28, 2004 3:26 pm

what is the strength like i run a chev and 37" tyres

Post by **DaveS3** » Wed Jul 28, 2004 3:57 pm

Dont even bother.....

Save you money and fit TOY thirds and longfields...

If you fit anything that is original rover you are on borrowed time!

Dave

Post by **BIG RANGIE** » Wed Jul 28, 2004 4:03 pm

dave can you tell me who to approch about this as i have a habbit of destroying axles and diffs, or atleast a ruff price for front and rear

thanks dan

Post by **HSV Rangie** » Wed Jul 28, 2004 4:19 pm

Dan,
I will email you tonight.

I run toy thirds, jacmac axles and profield cv's.

Also have 230plus KW.

Michael.

Post by **BIG RANGIE** » Wed Jul 28, 2004 4:23 pm

thanks heaps micheal

Post by **DiscoDino** » Wed Jul 28, 2004 4:47 pm

Michael was key to my data piling exercise on Jac Macs - Thanks for that :armsup:

man!

Post by **Slunnie** » Wed Jul 28, 2004 5:56 pm

BIG RANGIE wrote:can anyone tell me if i can change ratios in rangie diff from 3.54 to something like 4.11 or more

Yes, I've just put Dana 4.11's into my Disco which has the same diff.

HSV Rangie wrote:Some of the discos had 4.1.

Michael.

I'd never heard this. which ones?

BIG RANGIE wrote:what is the strength like i run a chev and 37" tyres

No worries...

until you take your foot off the clutch. :twisted:

From what I can gather, and have not experienced 35's are the Rover diff limits. If you are doing full diffs, axles and gears then moving over to Toy 3rds will be more economical, though if you get any bits from JacMac give them some time to make the bits.

Post by **BIG RANGIE** » Wed Jul 28, 2004 6:10 pm

thanks for the info on the dana but i think i need a full upgrade of diff and axles, has any one herd of lsd 9" diffs and axles being used under rangies

thanks dan

Post by **ISUZUROVER** » Wed Jul 28, 2004 6:51 pm

You can fit ford 9" diffs but it is a major exercise as you have to fit the complete 9" diff and axle assembly, weld on the RR suspension mounts and weld on flangesto mount the RR stub axles, brakes, hubs, etc. Do a search on pirate under the name "frankenrover" he did a front and rear 9" conversion.

Post by **BIG RANGIE** » Wed Jul 28, 2004 8:05 pm

thanks for the help ben i will look into it

cheers dan

Post by **HSV Rangie** » Wed Jul 28, 2004 8:17 pm

aprox cost to fit nine inch onto new axle tubes and have rover flange on end is about $1200.00, plus you need the nine inch centre, custom axles, and all the axle locating brackets.

aprox $2500.00 per axle. then you need engineeering.

Also in the US there is now available a 9'' hipinion only $1500.00 US

Michael.

Post by **BIG RANGIE** » Wed Jul 28, 2004 8:40 pm

thats a little to pricy but thanks for the advice

cheers dan

Post by **GURU** » Thu Jul 29, 2004 12:57 am

BIG RANGIE

My 2 cents worth.

I have fitted 4.11's from Maxidrive, they are stronger than a 3.54 but no where near as strong as you need. I wish I hadn't bought them (got them 2 years ago for my project truck then got a RR so fitted them to it) as I believe the best thing to do is fit Nissan GQ Patrol diffs complete hub to hub. just make new brakets to fit the RR suspension arms and maybe afew other little mods and you get great strength and low ratio's. you also gain stability as they are wider.

If I had my time over I would fit Nissan Diffs, and one day I still might, just I had already spent the money in the wrong places.

I believe it would be cheaper to fit Nissan diffs than spend the money on toyota Hi-lux centres and jac mac axles and CV's and the nissan centres would be stronger and the axles just as strong, and you get good strength CV's

Post by **HSV Rangie** » Thu Jul 29, 2004 7:46 am

Nissan Diffs cost ground clearance. Big they are.

Nissan CV's break to braother has a GQ he has broken athem and he runs 33's at the moment with a loka in the front.

The toy conversion is cheap reliable and you dont need to engineer it.

Nothing against the nissan set up but its not the easiest and has its own issues.

And you dont get the ratio choices as you would with the toy gear.

Michael.

Post by **aliread** » Thu Jul 29, 2004 4:19 pm

I have fitted 4.75 strenghen ring and pinions from Kam (uk) in my 90 . They are made to take 450 BHP . I put them on as i run 35" simex and my gearing was going though clutches like no tomorrow. Also as it is Diesel, the turbo and power range was all in the wrong area Hence why the clutch was going.

Post by **derangedrover** » Thu Jul 29, 2004 5:08 pm

aliread wrote:I have fitted 4.75 strenghen ring and pinions from Kam (uk) in my 90 . They are made to take 450 BHP . I put them on as i run 35" simex and my gearing was going though clutches like no tomorrow. Also as it is Diesel, the turbo and power range was all in the wrong area Hence why the clutch was going.

Is this a claim by KAM? and if so whats their warranty like? does it read something like " 29" tyre max, BHP figure calculated maximim when evenly split between front and rear differentials assuming 50% loss through transmission, warranty void if used offroad....."

Post by **landy_man** » Thu Jul 29, 2004 5:17 pm

i have also gone the toy route....in my opinion....the best strength for dollars conversion out there...
you get a high pinion reverse cut front diff...
longfield cv's.... either his standard 27 spline or new 30 spline 4340 chromoly ones (did someone say BLING)
30 spline axles...

All very strong when compared to Nissan axles.... and it is a no brainer... simple conversion...plus diff parts are cheap and easy to come by..lockers are cheap...if you can find them 2nd hand...and you dont loose any clearance

Post by **aliread** » Thu Jul 29, 2004 6:01 pm

derangedrover wrote:Is this a claim by KAM? and if so whats their warranty like? does it read something like " 29" tyre max, BHP figure calculated maximim when evenly split between front and rear differentials assuming 50% loss through transmission, warranty void if used offroad....."

Yeah it is their claim ,but as my 90 is 200 TDi and gives about 110 BHP if i am lucky. Then i stopped listerning as i would never get to that BHP. But they are more than fine for my truck with 35 " or bigger tyres

Post by **ISUZUROVER** » Fri Jul 30, 2004 7:24 pm

DAS wrote:BIG RANGIE

My 2 cents worth.

I have fitted 4.11's from Maxidrive, they are stronger than a 3.54 but no where near as strong as you need. I wish I hadn't bought them (got them 2 years ago for my project truck then got a RR so fitted them to it) as I believe the best thing to do is fit Nissan GQ Patrol diffs complete hub to hub. just make new brakets to fit the RR suspension arms and maybe afew other little mods and you get great strength and low ratio's. you also gain stability as they are wider.

If I had my time over I would fit Nissan Diffs, and one day I still might, just I had already spent the money in the wrong places.

I believe it would be cheaper to fit Nissan diffs than spend the money on toyota Hi-lux centres and jac mac axles and CV's and the nissan centres would be stronger and the axles just as strong, and you get good strength CV's

IMHO this is not the best way to go, the Hilux CV's seem stronger than the nissan ones and AFAIK there is no-one longfielding Nissan CV's. I remember at all the ASCC comps I have been to I personally saw a minimum of 5 nissan CV's break per day. Most of the crews have become so good at changing them they now do it in under 10 minutes with an electric rattle gun. This was usually only on 35" tyres. The toy rockcrawling guys run 38's with the same or better reliability (and that is without longfielding).

Post by **BIG RANGIE** » Sun Aug 01, 2004 3:21 pm

hey guys

i am intrested in persueing the toy centres and longfields more, any ideas who to go and see in brisbane or surrounds.

cheers dan

Post by **ISUZUROVER** » Mon Aug 02, 2004 8:06 pm

Most people just buy the axles from Jac Mac and the toy parts from a wrecker.

Post by **Slunnie** » Mon Aug 02, 2004 9:01 pm

Check the difference in these diffs
Toy 4.1 and a Rover 3.54. Toy on the left, Rover on the right.

Post by **BIG RANGIE** » Tue Aug 03, 2004 5:13 pm

hey guys

is there any particular toy diff that is stronger than the rest, eg. deisel hilux or 80 series etc...

i ask this because don't people blow hilux diffs when running v6 holden motors, letalone a healthy v8.

cheers dan

Post by **Slunnie** » Tue Aug 03, 2004 6:05 pm

BIG RANGIE wrote:hey guys

is there any particular toy diff that is stronger than the rest, eg. deisel hilux or 80 series etc...

i ask this because don't people blow hilux diffs when running v6 holden motors, letalone a healthy v8.

cheers dan

Yes they do blow the diffs with Holden V6's etc. The lower the ratio the weaker the gearset. eg, a 4.1:1 Toy diff is stronger than a 4.88 Toy diff. he Hilux solid axle front, rears and LC 80/100 fronts are basically the same except the LC fronts are Hi-pinion. The LC rears are bigger and the IFS hilux fronts are smaller.

Post by **landy_man** » Tue Aug 03, 2004 6:17 pm

the toyota high pinion diff has reverse cut gears which makes em pretty strong... definatly stronger than any rover cw&p

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