S2000 Under The Hood S2000 Technical and Mechanical discussions.

2001 Ap1 rear end noise

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Old Aug 3, 2020 | 08:16 AM
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Default 2001 Ap1 rear end noise

Been trying to diagnose this for a while now. I know it could be pretty much anything but I have had a hard time finding someone with this exact noise. It's more of a snapping noise than a clunk/bonk.
It never occurs from bumps or spirited driving. Only from takeoffs and other lower speed maneuvers that cause the car to "jerk". Tapping the gas pedal etc.
I checked the axle nuts and torqued them down to spec but it did not make a difference. It does not really sound like a bushing problem either.

I'm running stock suspension. The car has never been modified.

The file was too big to add so here is a dropbox link:
https://www.dropbox.com/s/03flp4a4el..._2898.mov?dl=0

Any input is appreciated.
Thanks

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Old Aug 3, 2020 | 09:05 PM
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someone said he needed a new axle nut in order to really fix the problem. perhaps you can try that.
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Old Aug 4, 2020 | 01:17 AM
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That sounds like your axle nuts are clicking. There is a TSB on those.

"Solution: Honda use to torque the axle nuts to 180 lbs. The correct torque is now 200 ft-lbs + 60 degrees lbs. Torque your axle nuts."

Edit: I should add that mine have been doing the same thing for about a half decade now without any side effects. It would behoove you to get them retorqued though.
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Old Aug 4, 2020 | 05:05 AM
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The 60 degree extra torque is one flat of the 6-sided nut. Remove the nut, clean and grease it, and put it back to the factory marks. Then tighten an additional "flat" and restake.

-- Chuck
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Old Aug 4, 2020 | 05:42 AM
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Originally Posted by jimboslice

"Solution: Honda use to torque the axle nuts to 180 lbs. The correct torque is now 200 ft-lbs + 60 degrees lbs. Torque your axle nuts."
Where is this from???

200LB + 60 degrees?

RIP that poor axle stub.
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Old Aug 4, 2020 | 02:19 PM
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Originally Posted by B serious
Where is this from???

200LB + 60 degrees?

RIP that poor axle stub.
I pulled that from the "common problems" sticky post. If that's not correct then someone needs to delete that bit.



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Old Aug 4, 2020 | 02:47 PM
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Retorquing the Rear Axle Nuts, How-to and Why

(With pictures.)

... and the original article.

Note this procedure has been around for eight (8) years and I've yet to note any broken axles doing it by this procedure.

-- Chuck

Last edited by Chuck S; Aug 4, 2020 at 02:55 PM.
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Old Aug 4, 2020 | 07:34 PM
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Originally Posted by Chuck S
Retorquing the Rear Axle Nuts, How-to and Why

(With pictures.)

... and the original article.

Note this procedure has been around for eight (8) years and I've yet to note any broken axles doing it by this procedure.

-- Chuck
Lol there's definitely been broken axles from this method. Cmon bruv, you've even been part of the discussion in threads wherw people broke their axles.

Billman uses his sense of feel to gauge when the axle nut is tight enough. 180LB + 60 deg isn't for every single instance.

The original article states anywhere from 150-180LB to start, also. Its all just a ballpark type of guide...

Do what y'all will....but that's potentially too much pre-tension to put on that stub.

There's a reason(s) Honda stopped at 220LB instead of suggesting this method themselves. If they thought the axle could safely take more, they'd let you know.

Last edited by B serious; Aug 4, 2020 at 07:41 PM.
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Old Aug 4, 2020 | 07:36 PM
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Originally Posted by jimboslice
I pulled that from the "common problems" sticky post. If that's not correct then someone needs to delete that bit.



The Billman recommended method is 150-180LB + 60 deg.

Obviously, he knows what he's doing...but as stated above...in a post started by a guy who broke his axle...Billman stated its Original staked position + "feel" when its tight enough. The 60 degrees is just a guide.

Last edited by B serious; Aug 4, 2020 at 08:02 PM.
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Old Aug 4, 2020 | 11:30 PM
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when i had mine tightened by my mechanic, i think it was about 8 ugga-chuggas. no problems for over 14 years since.
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