I Broke My R33 Gtr Front Diff :(

[tommis85]

Hi all,

It looks like that a couple hours on the dyno were the straw that broke the camel's back....my front diff. On the way back from tuning the diff was emitting horrible sounds and after inspections it turns out we have a severely worn set of gears in it. The crown gear is missing all it's heat coating and well, is very worn down. Looks like a wrong batch of oil was used that was thin as water.

My mechanic in town has located one mob that has some 2nd hand diff innards for sale but with quite a price tag attached.

Do any of you guys know where else I could get some from, short of me putting up a WTB ad? Also, I take it that I could you gears from a 32?

....I have done a bit of "googling" but have mainly been coming across UK threads.

Thanks for your time gents

PS - car is currently in rear wheel drive "mode" with front prop shaft removed to save the diff from locking up completely or something horrid like that.

[XKLABA]

where are you located, i have a 32 front diff I am about to pull apart to change to 3.55s for my 34 build

[tommis85]

Hey, I'm located in Toowoomba....can the internals be easily exchanged?

[R31Nismoid]

Upgrade it.

Do it once, do it right.

[tommis85]

Upgrade it.

Do it once, do it right.

You're quite right about that - but that would cost a bit eh? I dare say those gears would cost as much as gearbox upgrade gears, so around $800 to $1000ea?

[R31Nismoid]

Yep that it would. Nismo front IIRC is $1500 (cant remember exactly, i broke my sump at the same time - which is what can happen if you break one)

[R31Nismoid]

Having swapped to Nismo front/rear before i sold my GTR - no word of a lie probably the best mods I did.

The car handled so much better there is no scale of measure i could put to it thats how good the improvements were over stock/worn diffs as they lock perfectly.

[tommis85]

Ah ok, yeh I can imagine. It would have to be as awesome as putting in new coil overs or something like that!

Only problem is that I don't really have a spare $1500 to throw at it...may have to do it later down the track.

Sounds pretty nasty with your sump!

[XKLABA]

is it the whole diff you need or the crown and pinion gears, if whole diff upgrade to something like the quafe, if its just the crown and pinion I'm happy to post to you

[Count Grantleyish]

Sorry about thread dig but could you please describe the sound when the front LSD broke?

Did it made clicking sound that you can feel while driving it?

Cheers

[Moodles2]

The front diff isn't actually a LSD but a regular diff, Nismo do make LSD centers though to suit.

[tommis85]

Sorry about thread dig but could you please describe the sound when the front LSD broke?

Did it made clicking sound that you can feel while driving it?

Cheers

It sounded like a wicked set of straight cut gears ;-) No clicking or vibrating...just noise because of how the teeth were worn (no longer helical etc)

Is yours broke?

[Count Grantleyish]

It sounded like a wicked set of straight cut gears ;-) No clicking or vibrating...just noise because of how the teeth were worn (no longer helical etc)

Is yours broke?

I've no idea at the moment, waiting for friend to come over and have a look at it, hopefully it's just the CV like I originally thought.

We'll see...

[tommis85]

Well if it's clicking then there's a fair chance it's a worn CV....does it click when your driving around sharp bends/corners?

If the diff is making a clicking or clunking sound then it's bound to be in really bad shape haha

[Count Grantleyish]

It turns out it wasn't either CV or front diff, oddly it was coilovers... Clicking sound happen when I braked it.

Oh well, all that worrying for nothing!

[Munro]

I am looking for a GTR front crownwheel & pinion at the moment.

Too much power to the front wheels - have broken the teeth off mine!

Already have good LSD centre - just need the gears if anyone has them spare

after changing ratios.....................

[Plattsy]

It turns out it wasn't either CV or front diff, oddly it was coilovers... Clicking sound happen when I braked it.

Oh well, all that worrying for nothing!

how did you fix it mate?