S2000 rear diff rebuild

**OMG.JAI xD** · 27-01-2011 08:42 AM

Hi Guys,

The rear diff in my s2000 sounds like it's going to go.

Looking to rebuild it, though i'm not to sure exactly what parts i need to rebuild the rear diff. If anyone can advise on what parts i need to rebuild the diff and any recommended workshops in Sydney to go to, to get everything installed that would be great.

Any help on this would be appreciated.

Thanks.

**pilotb777_300** · 27-01-2011 08:49 AM

What symptoms is your diff showing to make you think its about to go ?

As for parts list, it all depends on whats wrong with the diff... could be crown and pinion only or at worst you may need a new housing and LSD unit...

**OMG.JAI xD** · 27-01-2011 10:55 AM

Rear end appears to be making a whirring noise when driving at about 60 k's. Kind of makes a whining noise at about 90 k's and up, only noticeable when the soft top is up.

Could be anything but i was advised that it's the diff?

**pilotb777_300** · 27-01-2011 12:09 PM

Does it whine under load only or when your coasting in neutral as well ?

My diff whines sightly as well only under load at certain load conditions... you cant hear it with the top down but with the top closed u can hear it slightly. It has been like this for close to a year with no problems... hasnt gotten worse or better. I had the car at honda to check if all was OK both a senior service man and the forman took the car for a long drive and coudlnt fault it. They said all S2000's are noisy to some extent.

if it is whining to the point where it is annoying you, it could be the backlash in the diff is out or ur crown/pinion are worn and need replacement. a replacment of the crown wheel and pinion would set u back about 1500-2000 including labour. Not sure who can do it for you though in sydney as I'm based in melb.

First thing I would do though is replace the fluid in ur diff and have a look for any large metal chunks in the old oil. That would be a good sign if things are about to self distruct or not.

**h3nno** · 27-01-2011 01:16 PM

Is it in the centre or to the left or right, Could be a wheel bearing?

**ducbui91** · 28-01-2011 01:05 AM

i think u need to shed some weight jai coz its the only reason thats killing ur diff hahah

**ducbui91** · 28-01-2011 01:14 AM

i think ive got that problem too but i thought it was coz of my 20inch rims

**OMG.JAI xD** · 28-01-2011 09:04 AM

Originally Posted by ducbui91

i think ive got that problem too but i thought it was coz of my 20inch rims

Thanks for the qucik response boys.

Duc u fuhnny kunt, j reckons its the wheel bearing but i'm gna start replacing parts of the diff just incase.

Hows the s2k cuzz???

**OMG.JAI xD** · 28-01-2011 09:11 AM

Any further info would be great !!

**JAP-S2K** · 28-01-2011 09:41 AM

If your looking to at changing your final drive ratio, then

Kia 4.777 from Holden/Kia Hornsby approx $500
MT&C Engineers Cryo-treatment of gears(if you want) Approx $100
Hornsby diffs rebuild $450-$600 including a solid pinion collar, fluids, bearings, seals.

That will pretty much solve all your diff issues without being F/I

**pilotb777_300** · 28-01-2011 01:21 PM

Originally Posted by JAP-S2K

If your looking to at changing your final drive ratio, then

Kia 4.777 from Holden/Kia Hornsby approx $500
MT&C Engineers Cryo-treatment of gears(if you want) Approx $100
Hornsby diffs rebuild $450-$600 including a solid pinion collar, fluids, bearings, seals.

That will pretty much solve all your diff issues without being F/I

Just out of curiosity... whats the stock crown and pinion worth to buy from honda ? and if you wana buy the same ratio as stock but in the kia brand whats the price difference ?