S2000 rear diff rebuild

[JAP-S2K]

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 ?

Expensive. OEM from Honda will vary from approx $1400-$1500 over the counter. Kia doesn't make parts nor does Honda, the parts come from the same parts manufacturer in this case, some Mazda models included, so 4:44's can be had from Mazda too. Kia doesn't sell 4:11's, and only offer 4:77's for there Sportage. So technically your not placing Kia parts in your diff, your placing another option from the same parts manufacturer.

[OMG.JAI xD]

YLD-S2K thanks for the info !!

[tamay_s2k]

i had a similar issue with my diff
and 2 weeks ago i blew it.
the whole thing
half the crown is missing, ring has chips in it
diff casing snapped.
i had a light whirring sound aswell on decel at around 60 kms then it turned into a constant.
snapped wen i was shifting normal around a round about.
i brought 4.44 gears from puddydad on s2ki for 800 delivered
and now im waiting on a kaaz 1.5 way lsd
my full rebuild is costing liek almost 4k including new casing and bearings aswell and labour

[OMG.JAI xD]

Hi Guys,

Taken on board your advice, picking up a kia 4.77 final drive (crown + pinion), brand new oem diff bearings (front, rear), oem crush collar and all seals. Will have all this tomorrow.

Not 100% sure if it's the diff but i know these things arent the best so imma be on the safe side and replace the diff parts anyway. This is my daily so i can't afford to break down.

Anyway boys will let you know how this all goes.

[vyets]

getting a 4.77 does not make your diff stronger..

[zhong]

^^^ I agree w/vyets that it won't make it stronger, but having a NEW crown/pinion should be better than the 15year old one that is currently in there anyway. May as well do the whole thing while it's open right? + It gives you better acceleration!

Do you mind giving us a price break down on your new purchases OMGJAI? Don't forget to purchase the "yellow box" to correct your speedo.

Peace.

[OMG.JAI xD]

hey man,

Whats this yellow box?

No one on this thread has stated that this will make the diff stronger and i did not state that i'm looking to make the diff stronger. I just want to fix the issue with my car that's all.

Anyway, i'm purchasing the lot brand new for 800 bux by the way.

[zhong]

I really wanna know how much your getting your Gears for from KIA.

Yellow box is a add in thing for your speedo to re-calibrate the speed calculation since you have changed your gear ratio.. You can purchase this from I forgot what's his name on S2ki but if you google it, you'll find it.

[tamay_s2k]

the only way to strengthen the diff is 2 change ur casing to puddymod or comptech housing and probs the lsd unit itself.
"OMG.JAI" u paid 800 for ur 4.77s?
i paid the exact same price for my 4.44s including cryogenic treatment

[OMG.JAI xD]

Hey man.

Yeah 800 bux was for the 4.77 + oem bearings etc etc etc

whats cryogenic treatment btw ??

[euromandeluxe]

Basically expose the parts to super cold temps. Hardens the steel but also makes it more brittle.

[OMG.JAI xD]

Hi all, thanks for the info everyone has been very helpful here.

Quick questions, changing the final drive to 4.77 how much will my speedo be off by? i.e. if the speedo is showing 60kmph how fast am i acutally going ??