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Go Back   SR20 Forum > Main Forums > Chassis & Suspension



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Old 01-24-2007, 12:12 PM   #1 (permalink)
SE-R Cup #2

 
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KYB AGX Shock Shaft Failure

I thought you guys might be interested in seeing this picture. The shocks were about 2.5 years old and used with a 375/300 GC setup. For the last 2 years, they only saw daily driving duties. I noticed that the car had started bottoming out in the rear recently. This is what I saw when I took off the wheel!

http://srwadet.merritt.org/v/200SX/IMG_1692.JPG.html

The shaft broke at a groove where the shaft diameter increases.
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Old 01-24-2007, 12:18 PM   #2 (permalink)
Is an SE-R/VE a VE-R?

 
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OW. Must be those Virginia roads - I took my hyperco/agx'd' B13 up there recently to play with my kid in Richmond; I've been down here (Atlanta) for six years, but I will NEVER complain about the condition of city roads down here again. Richmond must not have filled a pothole since I left. So much for tax cuts: no $ for infrastructure.
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Old 01-24-2007, 01:22 PM   #3 (permalink)
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wow... hope you got home ok
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Old 01-24-2007, 01:23 PM   #4 (permalink)
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Wow, that's the second car I've heard of doing that.
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Old 01-24-2007, 01:27 PM   #5 (permalink)
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That sucks, good to see you managed to get it home.
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Old 01-24-2007, 01:28 PM   #6 (permalink)
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That is NUTS man. I have never seen an AGX strut do that and I have prolly installed 4 sets on friend's cars. Crazy.

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Old 01-24-2007, 01:32 PM   #7 (permalink)
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Perhaps the rear bushings are shot and it's causing the strut to move around enough to snap the shaft? Or maybe you're torqueing the top shaft nut a little too tight? Perhaps it's a little of both? Just throwing out ideas....
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Old 01-24-2007, 01:35 PM   #8 (permalink)
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I probably drove it about 600 miles in that condition!
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Old 01-24-2007, 01:36 PM   #9 (permalink)
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[Stan] That's pretty f#cked up right there[/Stan]
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Old 01-24-2007, 01:46 PM   #10 (permalink)
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Quote:
Originally Posted by Hammerin Hank View Post
Perhaps the rear bushings are shot and it's causing the strut to move around enough to snap the shaft? Or maybe you're torqueing the top shaft nut a little too tight? Perhaps it's a little of both? Just throwing out ideas....
I don't think so. I replaced the suspension with a new hyperco/agx setup. The mounts were in good condition. The top shaft nut does not apply load to that part of the shaft.
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Old 01-24-2007, 02:09 PM   #11 (permalink)
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Well at the very least KYB should replace under warranty.
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Old 01-24-2007, 02:19 PM   #12 (permalink)
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I don't think so. I replaced the suspension with a new hyperco/agx setup. The mounts were in good condition. The top shaft nut does not apply load to that part of the shaft.
that new setup i sold you will DESTROY the GC combo you had.

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Old 01-24-2007, 02:20 PM   #13 (permalink)
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I filled out the contact form on the KYB website and asked if they wanted to inspect the failed components. I never heard back from them. Coilovers void the KYB warranty so I just ordered new ones (my 3rd set). KYB did replace my first set under warranty. However, Stranos never reimbursed me for my replacement costs (AVOID STRANOS!). Looking at the failure surfaces, it appears that it was a fatigue failure which initiated at a defect at the groove. The crack slowly grew about 1/3 of the way across the shaft until the shaft fractured completely. I may get a friend to put it on the SEM to take a closer look.
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Old 01-24-2007, 04:26 PM   #14 (permalink)
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OOOH SNAP!!! That sucks bro'

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Old 01-24-2007, 04:27 PM   #15 (permalink)
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OOOH SNAP!!!
Literally.....
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Old 01-24-2007, 07:40 PM   #16 (permalink)
YOUR F0RUM SUX

 
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wow... that is just not good at all.. you seriously could have rolled your car EASY to avoid something.
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Old 01-24-2007, 07:48 PM   #17 (permalink)
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Stop buying AGX, get Konis
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Old 01-24-2007, 08:09 PM   #18 (permalink)
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OW. Must be those Virginia roads - I took my hyperco/agx'd' B13 up there recently to play with my kid in Richmond; I've been down here (Atlanta) for six years, but I will NEVER complain about the condition of city roads down here again. Richmond must not have filled a pothole since I left. So much for tax cuts: no $ for infrastructure.
Seriously, the roads/streets in Richmond proper are as bad (or worse) than those in Minneapols/St. Paul. Apparently, none of the road crews around here know what a pavement transition is.
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Old 01-24-2007, 11:19 PM   #19 (permalink)
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Stop buying AGX, get Konis
AGXs are fine. every company has defects. even koni.
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Old 01-24-2007, 11:26 PM   #20 (permalink)
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yikes... for the record, what were your dampening settings at?
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