hilux high pinion diffs

[own81]

hi does anyone know if a 80 series high pinion third member fits a hilux housing.want to convert high pinion front n rear for more tail shaft clearance. can get them from states with the oil slingers ,but was wanting a cheaper option.

thanks owen

[cplux]

yes they fit i have been running them for quite a few years, be aware but, depending on your model of hilux the rear tailshaft can come into contact with the horsecollar crossmember if you have soft suspension/wish to carry any weight. may need to grind a little out around axle housing flange where the ring gear slides/sits in axle housing (particularly front housing) otherwise can sometimes be a pretty tight fit to get centre in/out.

[own81]

thanks cplux yeah its a 89 dual cab with dual case's set up my own flexy suspension set up with snake track bar so sounds like it might hit the crossmember as it sits low .
might just start with one in the front and go from there .

thanks owen

[Willy Hilux]

It will be too weak in the rear.

[Baja Burley]

whats the difference in ring gear size? they're both 8" arent they?

Why will the 80s be too weak in the rear?

[91Mav]

whats the difference in ring gear size? they're both 8" arent they?

Why will the 80s be too weak in the rear?

Because the coast side of the gears will be copping the grunt as they'll be run backwards. Run a V6 third in the rear, get a CV tailshaft and angle the pinion at the transfer case.

[own81]

so the front will be all ok .with a cv tail shaft do u run the cv at the diff end or transfer end?whats a good cv to use strength wise and how do u balance them as this is still street driven.

[BlueSuzy]

Hilux/landcruiser double cardon at transfer end. Might have to be custom shaft. Aim the diff flange to abit lower then the transfer, allows for torque wrap if leaf

but 80's/105's HP do fit lux housings. I have a 105 HP in my front.

[cplux]

each to there own on the strength of the gears, I can tell you but that i have destroyed a lockright and, detroit locker using 80 series HP in the rear, but the gearsets live on. The ring and pinion have been cryo'd but & I dont honestly know wether this makes a difference.

I have dual cases, and a supercharged 4y motor putting out around 115-120kw.

[own81]

do they just bolt in after what ever clearance need to be done or do they need to be redrilled and doweled

[cplux]

I dont recall having to change anything to fit the centres except for different size carrier bearings as my lockers were from '88 model hilux diffs. I dont even remember having any problems with initially fitting the diffs re-clearancing, but the last time i had to change one out (in the front) it was a PITA to get out and get new one in so i clearanced the area where it was contacting/jambing.

[SierraDan]

My 80 HP centre just dropped into my lux housing. Only thing I have to change is the gearing.

[BlueSuzy]

My 80 HP centre just dropped into my lux housing. Only thing I have to change is the gearing.

x2 with the 105.

Most HP are 4.11 70/80/105 series

some 105's are also 4.3