Outer Limits 4x4 Board

Hi all i'm trying to find a reasonably priced front diff center for my 80 series. It is a 90 mod manual diesel. i'm 99% sure its 4.1:1 ratio.
I'm located 1.5 hours s/e of melbourne. Can anyone help me out???

I think Hilux diffs fit, but would have to check with an expert... don't know if ratios are the same either.....

hilux is low pinion, 80 is high pinion

where abouts are you located?
try warragul wreckers thay had a couple of 80s last time i was there.
prices werent too bad.
pak4x4 on purton rd pakenham would have one i reckon.

100 series, 78/79 series also have same 8" high pinion front diffs that will fit, but check ratios are same as what you need.

Hilux diff WONT fit.. (dont believe the shit that they have a lux diff.. cos they dont)

105 series are high pinion but they are all 4.3 ratio

all 80's came from factory with 4.1 ratio.

Hzj75 also have same high pinion front mate.

84sloth wrote:Hzj75 also have same high pinion front mate.

75 series diff centres are different. I have an 80 series and also have 2 75 series diff centres for sale right now. They are not the same

How are they different? hi pinion 75 series centres should be exactly the same.

Didn't think 75's had HP front from factory, thought they were same as rear like 60's

This really should be a wanted add in the classifieds. But it seams to be now containing some tech so I will leave it here.

The FZJ75 front centre will fit but the ratio is different. An 80 series runs a 4.10:1 centre where as the 75 runs a 4.11:1 centre. The difference is very minimal but I have heard reports of transfer case wind up with the constant 4wd's on road while doing long distance with matching sized tyres and pressures on front and back.

RUFF wrote:This really should be a wanted add in the classifieds. But it seams to be now containing some tech so I will leave it here.

The FZJ75 front centre will fit but the ratio is different. An 80 series runs a 4.10:1 centre where as the 75 runs a 4.11:1 centre. The difference is very minimal but I have heard reports of transfer case wind up with the constant 4wd's on road while doing long distance with matching sized tyres and pressures on front and back.

I thought it was only early 75's (lp/9.5" front models) that were 4.11? With the hp front came the 4.1 ratios front+rear...could well be wrong though.

Try these guys.

Hall 4X4
27-29 Malvern Street
Bayswater
9729 7566

They should be able to help you. They have plenty of cruiser bits as well as Patrol.

Cheers,

Micko

Thanks for the info guys, I was able to find 1 at the wreckers, installed it today, all seems good.

Mr DJ wrote:Didn't think 75's had HP front from factory, thought they were same as rear like 60's

hj75 had the same low pinion diff front and rear (same as 60s), hzj75 got the smaller high pinion diff in the front (along with bigger CV joints) but kept the larger low pinion diff in the rear.

TheBigBoy wrote:

84sloth wrote:Hzj75 also have same high pinion front mate.

75 series diff centres are different. I have an 80 series and also have 2 75 series diff centres for sale right now. They are not the same

lol ya jackass u must have hj centres then bigboy

tom_286 wrote:

Mr DJ wrote:Didn't think 75's had HP front from factory, thought they were same as rear like 60's

hj75 had the same low pinion diff front and rear (same as 60s), hzj75 got the smaller high pinion diff in the front (along with bigger CV joints) but kept the larger low pinion diff in the rear.

Thanks for that, can you tell me if a 75 rear has a centred pumpkin or offset like 60's ??

Mr DJ wrote:

tom_286 wrote:

Mr DJ wrote:Didn't think 75's had HP front from factory, thought they were same as rear like 60's

hj75 had the same low pinion diff front and rear (same as 60s), hzj75 got the smaller high pinion diff in the front (along with bigger CV joints) but kept the larger low pinion diff in the rear.

Thanks for that, can you tell me if a 75 rear has a centred pumpkin or offset like 60's ??

offset mate all landcruiser rear's are offset im pretty sure. from fj25 right thru to the latest n greatest 200

Front diff centres are 4.11 for 70 and 80 series - I think technically 4.1 repeater. Do they have 37 ring gear teath and 9 pinion teeth? 37/9 = 4.111111111....

Rear diffs are 4.1. Same for 80 series (according to my manual anyway). Presumably the centre diff takes up the small difference in full time 4WD mode. I don't know how many teeth the rear diffs have. Some fan of trivia must know.

Thanks sloth

84sloth wrote:

TheBigBoy wrote:

84sloth wrote:Hzj75 also have same high pinion front mate.

75 series diff centres are different. I have an 80 series and also have 2 75 series diff centres for sale right now. They are not the same

lol ya jackass u must have hj centres then bigboy

lol, I have the 80 in the driveway and the diff centres sitting next to me. They are both high pinion. But they definately dont look the same mate.

Dan B, are you from traf?? I reckon i've heard about that 80 of yours, wicked bit of gear if its the one i'm thinkin of.

Yeah troopa that'd be mine! she's a wild bit of gear.

TheBigBoy wrote:

84sloth wrote:

TheBigBoy wrote:

84sloth wrote:Hzj75 also have same high pinion front mate.

75 series diff centres are different. I have an 80 series and also have 2 75 series diff centres for sale right now. They are not the same

lol ya jackass u must have hj centres then bigboy

lol, I have the 80 in the driveway and the diff centres sitting next to me. They are both high pinion. But they definately dont look the same mate.

The two diff centres you have advertised here are not High Pinion Centres. They are low pinion centres.

BJMorgo wrote:Front diff centres are 4.11 for 70 and 80 series - I think technically 4.1 repeater. Do they have 37 ring gear teath and 9 pinion teeth? 37/9 = 4.111111111....

Rear diffs are 4.1. Same for 80 series (according to my manual anyway). Presumably the centre diff takes up the small difference in full time 4WD mode. I don't know how many teeth the rear diffs have. Some fan of trivia must know.

As you say the true mathematical ratio is 4.1111111.... with the teeth count of 37/9.... I would think that the teeth count on the exact 4.1:1 would have to be 41/10 which gives the exact ratio.... the next EXACT multiple to give you EXACTLY 4.1:1 is 82/20, which while technically possible is very very unlikely....

turn the picture upside down and they become low pinions

So are they or arent they high pinions?? I dont mind if im wrong. Just want it cleared up. Because they were sold to me from the wreckers a while ago as high pinion 75 series front diff centres for my (FZJ75 94 model Ute). The crown wheel is 240mm (9.5") They where spares for my comp truck but I never used them and they just sat around in storage.

TheBigBoy wrote:So are they or arent they high pinions?? I dont mind if im wrong. Just want it cleared up. Because they were sold to me from the wreckers a while ago as high pinion 75 series front diff centres for my (FZJ75 94 model Ute). The crown wheel is 240mm (9.5") They where spares for my comp truck but I never used them and they just sat around in storage.

The high pinion has an 8" crown wheel.

They are big low pinions. NOT high pinion.