s2000 diff

[Mateusz1993]

Hi guys,
I have recently bought a s2000.. and after driving it for a couple of months, i think i might potentially have something wrong with my diff... The noise is a 'knock/clunk' which dosnt happen all the time, only when i let my clutch out relatively quickly and accelerate.. it sounds like when the clutch actually grips on to the rear shafts there is something loose coming from the rear.. if anyone has had this issue, please give me some advice. thanks :)

[YLDS2K]

Its good to see another s2000 owner around and im guessing you havent done much research on this sort of problem before you posted your question. In a nut shell, what tends to happen with s2000 diff's is that the crown and pinion decide to shit themselves which causes the knock/clunk. This tends to occur when you launch the car hard off a stop or doing burnouts can allow this to happen, There are other things that the problem could be but just by going what your saying, this would be my best answer atm. In regards to getting it fixed its costly to get genuine parts for genuine ratio's, but what most people tend to do is change the ratio to 4.44 which allows the car to rev higher although allows the car to stay in vtec when changing gears at high rpm.

Goodluck and hopefully this info was helpfull and maybe some others might be able to shine more light on this

[Mateusz1993]

Thankyou very much! I havnt done burnouts in it... but sometimes i have taken of relatively quickly at times! How much would this be approximately to fix? would it be cheaper just getting a new diff?

[vyets]

Changing to a 4.44 does not allow the car to rev higher it still redlines at 9200rpm and staying in vtec is just the same. 4.44 FD's allow the car to rev faster to redline it cuts the gears shorter so insted of hitting 9000 rpm @ APROX 60ish km/h in 1st gear it will be reduced to say about 55km/h and so on.

Mateusz1993 fixing your diff will depend on what is actually broken if it is the diff that is. Do a search in this forum at the top right there is a search bar, there's plenty of topics coving this and you will get quite a good read about what tends to break how much it cost locally etc. etc.

[YLDS2K]

Yeah vyet your right but doesn't it rev higher say at 100 km/h on the highway? Instead of sitting at just under 3500 rpm it sits closer to 4000? Or am I thinking of something else?

[vyets]

Yea that's because the gears are shorter so like the explanation I did of the first gear instead of 9000rpm at 60km/h it would be 900rpm at 50km/h and so on..
So it dosen't technically "rev higher"

[pilotb777_300]

I havent had a diff break on me as yet personally but I have known people who have had to buy new crown and pinions... If you go to honda they wont rebuild it for you. They will replace the whole diff at a cost of around 5K depending on which dealer u go to. Getting a rebuild from a diff specialist in melb (Assuming only crown and pinion) will cost u anywhere from 1500-2500 bucks. I cant confirm though if this is using original honda parts or not. I would say it porbably is.

The cost of rebuilt would most likely go up fairly quick if you also damaged the inner casing or the Torsen LSD unit itself. If this is the case u may be better off with a whole new unit. (this is worst case scenario though). Like has been said before most people only need new crown and pinion.

[Mateusz1993]

thanks heaps guys! really appreciate it... oh i was thinking could i possibly get a diff from the wreckers? to save abit of money? beacause i just use it as a cruise car and not intending of racing or anything... have already lost my license. lol

[pilotb777_300]

You can get a diff from the wreckers. However it will be you and your luck as to what you end up with. You may get something cheap which turns out to be in good condition or u may end up with another wrecked diff. I'd personally just spend the extra money and go for the rebuilt option. at least you know what your getting then.

On a side note though... there may be nothing wrong with your diff. click/clunk noises from the rear end which come and go under certain load conditions can also be faulty drive shafts. Get the car checked out by a mechanic first before assuming the worst.

good luck !

[vyets]

^^^ what he said! :D

[ncmx5]

thanks heaps guys! really appreciate it... oh i was thinking could i possibly get a diff from the wreckers? to save abit of money? beacause i just use it as a cruise car and not intending of racing or anything... have already lost my license. lol

you still driving around with a lost license??? dunno why you would "lol" at that, that's just stupid.

[Mateusz1993]

you still driving around with a lost license??? dunno why you would "lol" at that, that's just stupid.

nah m8! not driving... but my dad drives it sometimes.. and he has heard the noise so he told me!

[tamay_s2k]

check ur driveshafts 1st as they are the main signs of wear and tear that you are experiencing.
if this is not the case then doing a fresh rebuild is the best option
thats wat im currently doing. just replace everything and dont worry about it again. i no this sounds a bit pricey but its the best way. stops you from still worrying about the stock faults.
i get a lot of whinding from the rear diff and at very low speeds if i get on the clutch n off, i can hear my whole diff trying 2 lock and unlock. it gets really annoying sometimes
i just purchased a 4.44 mazda speed gear set off s2ki from a puddymod supplier :D literally 1 hour ago lol
next im ordering a j's crush collar, kaaz 1.5 way LSD and new bearings. after labour its costing me just under $3000 and its going to be MUCH stronger then stock, as long as its put together correctly.

[vyets]

If you're complaining about noise already wait till your 1.5way comes in :P LOL

[tamay_s2k]

If you're complaining about noise already wait till your 1.5way comes in :P LOL
lmao
atleast ill no that the noise is suppost 2 be there haha :P
are u running a stock lsd?

[vyets]

yeap stock torsen lsd with kia 4.77fd

[AusS2000]

i just purchased a 4.44 mazda speed gear set off s2ki from a puddymod supplier :D literally 1 hour ago lol
next im ordering a j's crush collar, kaaz 1.5 way LSD and new bearings. after labour its costing me just under $3000 and its going to be MUCH stronger then stock, as long as its put together correctly.

Keep in mind you aren't doing the major thing that affects the strength of a diff. Beefing up the end caps.

[vyets]

^^ correct! not to mention 4.44's are more fragile then 4.10's

[tamay_s2k]

yea i would love to do the comptech diff housing but im confused on where to purchase it from and it sounds like a real headache.
i didnt no the 4.44s r weaker :S
the 4.44s im purchasing have been cryo treated aswell so i think that should help a bit with the durability

[vyets]

http://www.scienceofspeed.com/discontinued_archive/Comptech_Sport/reinforced_differential/

In theory yea more teeth = weaker but then mine havn't broken soo far lol *knocks on wood, but I've been lucky with my diff for 3 years lol.
Just keep in mind that once the 4.44's are in and the kaaz 1.5way you'll have alot of sound coming from the rear with the whine and the lsd clunks, but at least u can do mini burnouts when your parking lol :D