100 SERIES FRONT DIFF REBUILD OPTIONS

Joined: 05 Aug 2003 Location: Melbourne, Aust.

Hi,

Had a mate away with us on the weekend in a 100 series Cruiser and he blew his front diff. Anyone on here done the same and have any advice on stronger fixes than a standard rebuild?
I presume adding a locker to it will only transfer the forces to other parts but will it help to strengthen the diff at all? He has booked it in to be rebuilt at ARB next week and was wondering if there were any options for strengthening it.
We think he has busted teeth off the diff centre (crown wheel?) as it was effecting both front wheels and making nasty crunching noises after getting the wheels in the air over a rock step on a steep hill.
Any advice?

Thanks,
Mark

Joined: 01 Jun 2008 Location: here

i see a few broken lc100 front diffs,and they usually break the way you described.
the only real fix is to put an airlocker in it and modify the driving style,so it can slowly crawl up the hill.
is this an ifs or live axle lc100?

Joined: 05 Aug 2003 Location: Melbourne, Aust.

G'Day arb383,

Sorry probably should have mentioned that already. It is an IFS. Does the locker add any strength to the diff in these? If so what is usually the next thing down the line to break and is it cheaper than a diff rebuild?

Before i get ribbed, sorry i haven't had a chance to search yet as i'm sure a lot of this info is probably already in here. So thanks for the replies.

Mark

Joined: 12 Aug 2003 Location: wollongong

The 04 and later turbo diesel ifs diffs have 4 pinion (same as lsd) front centres in them to minimise this issue, a locker is also a solid centre, if you put the locker in witrh new gears, it will be alot stronger and the install will sort of make shelling out the dollars worthwhile, as the vehicle will become a real bush limo after that.
Andrew

Joined: 20 Apr 2006 Location: Melb. AU

MJP wrote:

it was effecting both front wheels and making nasty crunching noises after getting the wheels in the air over a rock step on a steep hill.
Any advice?

Installing the air locker (using a solid pinion spacer) and educating the driver not to spin lifted wheels should do it.

Joined: 13 Jan 2003 Location: Sydney

Your best option for rebuilding a 100 series front end Wink

http://forum.ih8mud.com/100-series-cruisers/193310-featured-100-slee-off-road-1998-uzj105-solid-axle-100-series.html

Joined: 02 Oct 2006

Change driving style?? Haha yeah good one. I know who drives it!

Joined: 12 Aug 2003 Location: wollongong

busted100 has a locker for sale for 700 pm him

Joined: 01 Jun 2008 Location: here

next down the line to break after crownwheel and pinions on ifs lc100 is the cv shaft.i have seen them break the shaft of the outer cv perfectly in half.and they are about 40mm of solid steel!
you have to go easy when climbing hills.

Joined: 04 Nov 2002 Location: perth western australia

those IFS front are certainly waek as piss a mate of mine blew his a few months back.

All he did was get one front wheel in the air with a bit of wheel spin and when it came back down the diff went crunch.

He stipped the teeth of the side gears and the spider gears, he also decided this was a great excuse to get a front air locker Laughing

Joined: 20 Apr 2006 Location: Melb. AU

dinos4x4 wrote:

those IFS front are certainly waek as piss a mate of mine blew his a few months back.

All he did was get one front wheel in the air with a bit of wheel spin and when it came back down the diff went crunch.

Your 105 will do exactly the same thing, only that your wheels probably stay on the ground because of the better front travel.

Dimensionally the 2 diffs are identical.

Joined: 05 Aug 2003 Location: Melbourne, Aust.

Thanks Guys,

So what you're telling me is that he should've stuck with the GU! I already knew that. Wink

Anyone know what it costs to replace a CV on one of these as opposed to the $1300 he was quoted for the diff rebuild? Mind you $1300 seems pretty reasonable for that.

Cheers,
Mark

Joined: 01 Jun 2008 Location: here

front cv joint,non genuine cost less than $200.

Joined: 05 Aug 2003 Location: Melbourne, Aust.

Is "non genuine" any weaker than the Toyota part? I presume it is cheaper.
[/quote]

Joined: 01 Jun 2008 Location: here

i don't consider the factory cv as weak.
driver abuse will break any part.
i don't know if the non genuine is stronger or not.