FRONT DIFF ADVICE PLZ

[parareguk]

hi today at whaddon i think i have knackerd the front diff....when the fairy drive is in 4x4 it is banging on every half turn of the wheel as well as fee ling tight ?? when in 2 wheel drive it makes no sound an coasts fine

any advise on what may of happend or what i can do to fix/ recon parts etc will be greatfully recived


many thanks folks


cheers bryan

[johnpirate]

It shouldnt bang but you can feel it kicking back in your hands on tight corners.What sort of speed were you doing?.

[Range Rover Blues]

If it is the diff it's got the same guts as a RRC diff and they go for peanuts.

[dave_2A_2.25Turbo]

Ratio is different as standard though

[parareguk]

Can you explain plz boys i'm n ot up with all this  :?

cheers bryan

[dave_2A_2.25Turbo]

The diffs for Series and RRC are basically the same and are interchangeable.  The ratios are different though - something like 4.2 :1 for Series, and 3.7 :1 for RRC.  It's quite common to put RRC diffs into a Series to up the gearing ie drop the revs for a given roadspeed.  You have to do both axles at the same time though.

[hobbit]

Adds about 8-9 mph on the speedo, ie you do 30 on the clock the vehicle does 38

Makes a good difference and cheaper than an overdrive, got one on the back of the lightweight, looking at doing the front tomorrow, if everything cracks off ok

[dave_2A_2.25Turbo]

I've had a set for a year! must get round to fitting em...

[parareguk]

where would i pick these up for a good price?
 :lol:

[hobbit]

Give a shout in the wants section, and see what comes up, as has been said people usually have them kicking around somewhere

The good news is you dont have to do both of them at the same time, although the front is a bit more work than the rear

If you did the front, you wont be able to engage 4wd or low ratio until you have done the rear too

But you still can drive the machine in 2wd, as Ive been doing for the past few weeks

[electricbluebadger]

Series diffs are 4.7:1 Rangey Classic and 90/110 (early) are 3.54:1 (later are also 3.54 but 24 spline so no good), sounds like youve chipped teeth or more likely knackered the spider gears in the diff centre.

Cheers Steve

[Rich_P]

Also remember that by increasing the gearing, you need an engine that has enough puff to pull it along with the higher gearing.  Acceleration will be slower with the higher ratio diffs as well.

[hobbit]

Also remember that by increasing the gearing, you need an engine that has enough puff to pull it along with the higher gearing.  Acceleration will be slower with the higher ratio diffs as well.

 :lol: series motors and acceleration, you just have to get used to changing gears at different speeds and revs, also re mark the speedo to give you some idea on your actual speed, I used a sat nav at 30-60 to get the revised readings on the speedo

[S188]

Could also be a nackered UJ on the front axle? If your having the diff out you'll soon find out when you remove the halfshafts (probubly the second side you dismantle  :roll: ).

As for diff ratios as well as the standard 4.7:1 and stage1/boingy 3.54:1 diffs, you can also get them in 4.3:1, 4.1:1 and 3.9:1 (and maybe even more) if you know which classic rover cars to get a pair from.  Its not done so much these days but when the cars were more abundant fitting them to landys was fairly common (espacally before overdrives came out).  Always worth compairing crownwheels when swaping unknown diffs.

[parareguk]

This evenings quest found a load of teeth by the sump plug which r approx an inch and a half in length (is this right?? - ha ha ha).

Any thoughts?  

Cheers
Bryan

[Range Rover Blues]

Sounds big enough to be the crownwheel to me, could be wrong though.

Otherwise what I menat was strip the core outof a Rangie diff (ie the diff itself) and it will bolt into a series.  That said you need the earlier Imperial diff not the later metric.

Probably got a pair of diffs if anyone needs them.

BTW, I know a lot of early RRC diffs went into Rover P5s,  not that you see many of them these days.

[parareguk]

i think you are right ...looking at the shape of them and the haynes manwell.......at this stage could i have done the half shaft as well ?

how easy is it to replace the crownwheel anbody know

cheers bryan :D

[parareguk]

this is the result of my big right foot !! :shock:

[Bowie]

Ouch!  :shock: