wrong ratio. Not happy jan.

[willvine]

Hey guys. I finished putting my new diff in the series 3 LWB but when i checked the ratio while jacked up it was not the same as the rear:twisted::mad::mad::mad:. Unfortunatly i diddn't count the crown and pinion teeth before I put it in which is my fault. But i have just wasted half a sunday doing it:mad::mad: The crap thing is I had to send my old one in for exchange which was a 4:7:1 and they sent me a 4:6:1. MY question is.. what series 3 had a 4:6:1 ratio in it. maybe a 6 cylinder? as mine is a 4 deisel.

Also there are some numbers stamped on the crown and pinion which are.


9129 on the one they sent me and...

6510 on the one i had in it.

what do these numbers mean as they dont represent the ratio.

Thanks for the rant.

Will.

[djam1]

Will
All Series 3 except the Stage 1 had 4.7:1 diff ratios all Stage 1/County Defenders/ Range Rovers and Discos had 3.54:1 excepting the Army 6x6 they too had 4.7:1.
I think there was a 4.6:1 ratio in some of the old Rover cars but they would be pretty rare
How do you conclude that it is 4.6:1

[willvine]

I counted 46 teeth on the crown and 13 teeth on the pinion, so I was told you just drop the last digit on the pinion and call it 4:6:1.

Cheers.

[djam1]

Will
I just went out and looked at my spare and a 3.54:1 had 13x46 so someone has sent you a Range Rover diff by the sound of it

[willvine]

Thanks for that. I did think it was for a V8 or some thing with more guts that a 2.25 diesle.

I will just have to send it back and have a winge .

cheers.
Will.

[Disco_owner]

46 teeth on crown and 13 teeth on pinion is a 3.54 46/13=3.53846=3.54

regards

khos

[Slunnie]

Hey Will,

The 3.54 was out of the Stage1 Series 3 which was the V8 or Isuzu powered ones. Was it just the diff or the whole axle that you changed? If it was the whole axle you may want to just change the diff part back to 4.7 as the axles/CV's are stronger.

[p38arover]

Depending on what motor you have, you might be well off. Fit a 3.54 to the other end. That's what I want for my Holden 202 powered IIA

[Slunnie]

2.25 diesel

[p38arover]

2.25 diesel


Ooops!


Well, a 3.54 might be a tad tall for a 2.25 diesel! :D

[LandyAndy]

Nothing a good turbo and intercooler couldnt handle:eek::eek::eek::eek::eek:
Andrew

[willvine]

Hey Will,

The 3.54 was out of the Stage1 Series 3 which was the V8 or Isuzu powered ones. Was it just the diff or the whole axle that you changed? If it was the whole axle you may want to just change the diff part back to 4.7 as the axles/CV's are stronger.

Hey slunnie, I just changed the diff and kept the original axles.

My delema now is I was hoping to bring it along on sunday to the watagans but now may not be able to sort out a replacement in time.

Just a thought. does any body want to swap a front 3.54 for a 4.7.1 ?


cheers.

[p38arover]

Maybe. Where are you?

[willvine]

Maybe. Where are you?

Hi Ron,

I am in west pymble sydney. send me a PM and i will give you my mobile.

Be great if you can help.

Thanks
Will.

[p38arover]

I can lend you one if you'd prefer to send yours back for exchange. It's not in the car so that makes it easy for you.

I'm in Emu Plains.

[willvine]

Hi Ron, Thanks, But i called the mob who sent it and they did send the wrong one!. It gets better. They are more than happy to send me the right one and let me keep the wrong one as the freight is so costly. So its up for grabs if any one wants it, for a price;) I have no intention of putting a bigger motor in the series so i dont need it.

Cheers

[GrahamH]

Depending on what motor you have, you might be well off. Fit a 3.54 to the other end. That's what I want for my Holden 202 powered IIA

Ron, I used to run a pair of 4.3:1 diffs out of Rover 75 cars in my Holden 186-powered SWB SIIa (with 7.50 x 16 tyres) back in Christchurch, NZ. Finding a pair of Rover 75's with serviceable diffs which you can scavenge might be a bit of a challenge these days. The resultant ratios worked nicely though. (And I was able to graft a Hilux clutch-pack centre into the rear diff to give me LSD later on too.)

Sorry about the thread hijack, Willvine!