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Feb 23, 2007 | 05:34 AM

#21

paulzale

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Joined: Feb 2007

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See part number above and call your local dealer. I looked the part up on Kia Parts

Feb 23, 2007 | 05:40 AM

#22

dean

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Joined: Mar 2004

Posts: 10,478

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Quote:

Originally Posted by Hardtopguy,Feb 21 2007, 10:57 PM

I rate the housings as good/better/best
good= AP1 housing
better= AP2 housing
Best= Comptech housing

You forgot one - fully cryo'ed AP2 diff.

Feb 23, 2007 | 05:43 AM

#23

dean

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Joined: Mar 2004

Posts: 10,478

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Quote:

Originally Posted by paulzale,Feb 23 2007, 08:24 AM

I agree and I can get a rear gear free from a 2wd version so that is why I am really interested in knowing if it is correct.

It isn't correct. As Stratocaster pointed out, the S2000 diff requires "reverse cut" gears which are typically found in front axles.

Feb 23, 2007 | 09:21 AM

#24

PilotSi

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Joined: Aug 2005

Posts: 1,820

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Quote:

Originally Posted by Hardtopguy,Feb 22 2007, 05:22 PM

I'm not an engineer so I really can't explain this other than it's a harmonic noise. all gears spinning make some sort of noise whether the human ear can hear it or not. The 4.56 gear's harmonic noise becomes audible around 4000 engine RPM's other than that short band you can not hear the gear whine. Do a google search for harmonic gear whine and you'll see what I'm trying to say.

I bought my gears from Hardtopguy last year, and had him install it along with the Comptech diff. I do autocross/track day work as well as DD it.

At first, the gear whine was really bad, obnoxious. Then it got better after 100 miles, as Hardtopguy said it would. Then, after about 3k miles on it, the noise has all but disappeared. Honest! It's not as quiet as stock, as it's still there, but it's not nearly as intrusive as the first 3000miles. I can't explain it.

Other than that, I love my gears. I wish 6th was longer so it would cruise at a lower RPM, but

to Hardtopguy & 4.56 gears.

Mar 5, 2007 | 04:42 PM

#25

Steven2k

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Joined: Aug 2004

Posts: 1,590

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From: La Crescenta, CA

Quote:

Originally Posted by Stratocaster,Feb 22 2007, 03:39 PM

No, it is not true.

can anybody confirm this?

2 06 s2k owners tried to install the yellow box but failed to do so. i forgot the exact reason, but it didn't work.

Mar 5, 2007 | 04:49 PM

#26

Stratocaster

Joined: Dec 2001

Posts: 11,399

Likes: 19

Quote:

Originally Posted by Steven2k,Mar 5 2007, 07:42 PM

can anybody confirm this?

2 06 s2k owners tried to install the yellow box but failed to do so. i forgot the exact reason, but it didn't work.

I know for a fact that they are out there with them installed in 06s. They may not post to the board.

Also, what you are remember is not Yellow box installs. I know that thread of which you speak.