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HZJ75 9 1/2" front diff conversion
Posted: Thu Mar 15, 2007 11:49 am
by turbo4t
Does anyone know of any problems converting a solid axle HZJ back to the HJ front diff? I want to replace the whole diff to go back to the big centre. I can deal with any brake fluid proportion problems if any. Cheers
Posted: Thu Mar 15, 2007 1:36 pm
by bad_religion_au
is it just to stop blowing your front center? if so, you can upgrade the carrier bolts, and throw an ARB or detroit carrier in and that should strengthen things enough
Posted: Thu Mar 15, 2007 1:47 pm
by turbo4t
bad_religion_au wrote:is it just to stop blowing your front center? if so, you can upgrade the carrier bolts, and throw an ARB or detroit carrier in and that should strengthen things enough
More for interchangeability. I don't like the Hilux centre. The big ones are so much easier to find.
diffs
Posted: Thu Mar 15, 2007 3:28 pm
by 75 cruser
im fairly sure the latter model ones are a little bit wider than the early diffs
rob
diff
Posted: Thu Mar 15, 2007 8:37 pm
by tobie
g'day mick
from memory the later 75x had stronger c'v
i have seen before using a early 75x center and housing and putting later model 75x cv to make a strong diff
will bolt straight up
Re: diff
Posted: Fri Mar 16, 2007 4:40 pm
by dumbdunce
tobie wrote:g'day mick
from memory the later 75x had stronger c'v
i have seen before using a early 75x center and housing and putting later model 75x cv to make a strong diff
will bolt straight up
the later CV's don't fit in the early housing. it might be possible to clearance the housing to fit the bigger CV's but it's a pointless mission.
There may be clearance issues with the diff and the bottom of the motor - the engine is slightly more central and probably sits a bit lower in a HZJ/FZJ than in a FJ/HJ. If you have some lift involved it probably isn't a problem. frame and spring spacing is the same. might have to fiddle with prop shaft flanges. Personally I think it's a pointless swap, there is plenty of high pinion front diffs to be had out of 80's and 7x's and the 8" is arguably as strong or stronger than the 9" with less weight and better clearance.
cheers
DD
Posted: Fri Mar 16, 2007 5:43 pm
by goannaoffroad
The early diff' assembly will bolt straight in with no problem's but t/shaft
need's to be changed.
The smaller diff' fitted to hzj75 and 80's are much stronger than a hilux
I'd rebuild 5 rear diff's to 1 front on vehicles that see a fair bit of offroad use.
diff
Posted: Fri Mar 16, 2007 9:00 pm
by tobie
sorry post was not in detail enough, we swapped over the ball joint knuckles as well
Posted: Mon Mar 26, 2007 6:36 pm
by turbo4t
Thanks for the replies. Something to think about...