Diff Ratio

MATT4U · Post by **MATT4U** » Thu Dec 08, 2005 6:06 am

Question is
Could I out a LSD Rear diff out of a newer surf(89-up) into my 88??

JJ · Post by JJ » Thu Dec 08, 2005 9:04 am

As far as I know all Hilux or Hiace diffs are interchangeable. Except the independent diff.

MATT4U · Post by **MATT4U** » Thu Dec 08, 2005 9:06 am

so the older and newer diffs hafe the same ratio

eatenfuller · Post by **eatenfuller** » Thu Dec 08, 2005 11:34 am

yes matt all surf rear diffs are interchangable ,so the answer is yes

it will fit youre truck.

but why an lsd they dont go any better than a open diff :!:

youle soon c :wink:

MATT4U · Post by **MATT4U** » Thu Dec 08, 2005 11:37 am

cause in mud im more likely to spin both rear wheels if I have an lsd but an open will spin one

eatenfuller · Post by **eatenfuller** » Thu Dec 08, 2005 11:52 am

so ya think :wink:

not trying to be negative matt but keep youre money and buy a locker off suprasurf,for the rivers that you live near youre better off with a locker for the rocks etc.

or failing that ya any good with a welder :?:

MATT4U · Post by **MATT4U** » Thu Dec 08, 2005 12:30 pm

its only cause I can get one for cheep as

SupraLux · Post by **SupraLux** » Thu Dec 08, 2005 1:28 pm

IF the truck it came from was a 2.4TD then the ratio will PROBABLY be the same.

4.3

Check that first, otherwise you could be running different ratios front and rear and that'll chop your tyres and both your diffs out. as well as your UJs on your driveshafts

They are 8" right through the surfs you're talking about, so the fitment is identical. All you need is 2 litres of LSD oil and a $5 paper gasket from toyota to do the swap.

HOWEVER... its going to be 15 years old. LSDs only do their limited slippy thing for a short period... the more they get used, the more 'open' they become... and LSDs only work at slow speed. In mud, you nail it... and its as useless as tits on a bull. If its been very (last 6 months) recently reco'd then it would be ok if it was cheap (Whats cheap? IF you get it for $100 or less then it would be good for a 4-pinion base for a locker later on - cos you could sell your old one for similar if you get lucky).

As EF said, keep your money - save for a locker.

My 2c

Steve

JJ · Post by JJ » Thu Dec 08, 2005 4:54 pm

Sandblast the plates & tighten the springs & its almost like having a locker & it won't cost you 2 grand.

SupraLux · Post by **SupraLux** » Thu Dec 08, 2005 8:29 pm

JJ wrote:Sandblast the plates & tighten the springs & its almost like having a locker & it won't cost you 2 grand.

?? Just add a couple of shims (read: washers) and its done as well... but it will still slog out quite quickly... and the feel and noise of an over-tightened LSD on the road when turning is just nasty...

$2k? Lockers are $650 at worst, and home-handyman fittable in about 1 1/2 - 2 hours. Or are you refering to the ARB air locker? $1300 including pump at the moment I believe... and stil not that much longer to fit maybe 2 1/2 - 3 hours.

Steve

PS: a fully reconditioned LSD will cost you around $850 - tightened to whatever you specify from loose as a goose to tight as a scotsman... but as I mentioned the banging and shuddering of a tight LSD when turning on hard surfaces gets quite irritating... I drove one like that for a few days and it was like chinese water torture...

Scott · Post by **Scott** » Sun Dec 11, 2005 9:15 pm

MATT4U,If you can get a LSD cheap?, get two! one up front

Cheers scott

hosehustler · Post by **hosehustler** » Tue Dec 13, 2005 5:53 am

Good site for diff ratio info etc :wink:

http://www.4crawler.com/4x4/4R_TechInfo.shtml

JJ · Post by JJ » Tue Dec 13, 2005 4:27 pm

Last I heard ARB lockers were about $1700 on special + pump. $250 for their new mini pump that only does the locker.