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KYB strut mount bad in two months (almost hit my master cylinder)

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Old Jun 6, 2022 | 06:53 PM
  #1  
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From: Utica NY
Car: 88 Trans Am
Engine: 305 TBI
Transmission: 700R4
Axle/Gears: 3:42 open diff
KYB strut mount bad in two months (almost hit my master cylinder)

Hello everyone, I was coming home from work today and as always I tried to avoid some potholes in these yucky New York State roads. But this one I could not avoid, I hit one and then I was almost home and started hearing a rattling sound it wasn’t bad, almost like a broken sway bar link

Then when I was going to pop my hood after eating my dinner to check my power steering fluid that has been leaking as of late from a faulty pitman shaft seal on a reman steering box from Napa that is not even a year old.(I know I should of rebuilt my old one which I still have but really needed my car at the time)

then found this !!!

Anyway, I ordered two replacements of the same from rockauto under warranty. God I am so sick of crap parts!! Granted it was probably a defective one out of the bunch. Is there anyway I could of predicted this, maybe by improper torquing of the strut?? Now I’m just really frustrated I’m hoping I won’t mess up the alignment.



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Old Jun 6, 2022 | 07:33 PM
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Car: 1989-92 FORMULA350 305 92 Hawkclone
Engine: 4++,350 & 305 CIs
Transmission: 700R4 4800 vig 18th700R4 t56 ZF6 T5
Axle/Gears: 3.70 9"ford alum chunk,dana44,9bolt
Re: KYB strut mount bad in two months (almost hit my master cylinder)

Welcome to china parts. In all fairness, a good pothole can tear up a lot of parts.
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Old Jun 7, 2022 | 01:37 PM
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From: MICHIGAN
Car: 1988 Trans Am
Engine: L03
Transmission: 700R4
Axle/Gears: 10 Bolt 2.73 Open
Re: KYB strut mount bad in two months (almost hit my master cylinder)

I've never seen one do that before.
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Old Jun 7, 2022 | 02:12 PM
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Re: KYB strut mount bad in two months (almost hit my master cylinder)

Originally Posted by zupta82
.......I’m hoping I won’t mess up the alignment.......
You do realize that it's best to have an alignment done after replacing that ?
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Old Jun 7, 2022 | 02:42 PM
  #5  
zupta82's Avatar
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From: Utica NY
Car: 88 Trans Am
Engine: 305 TBI
Transmission: 700R4
Axle/Gears: 3:42 open diff
Re: KYB strut mount bad in two months (almost hit my master cylinder)

I did in fact have an alignment done after i replaced both my struts and mounts. I hope I don’t have to pay 100 bucks again for an alignment it just suCks that the parts took a dump in just two months, I recall the rivets that hold the thing together don’t seem to be mushroomed on the underside of the bearing. They are flush to the surface. I’m seriously thinking of putting some tack welds on the rivets. Has anyone used KYB brand mounts. Jeez my mevotech standards lasted 10 summers. These were the most expensive at rockauto.
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Old Jun 8, 2022 | 09:36 AM
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Car: 90 Formula / T-tops
Engine: 305 TPI
Transmission: MD8
Re: KYB strut mount bad in two months (almost hit my master cylinder)

Geeze, your strut mount got pretty dirty in just 2 months! Man, you better check on other suspension parts down there while your at it. Must take one helluva pot hole to do that! your strut mount may have saved other damage by giving first.
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Old Jun 8, 2022 | 11:08 AM
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Car: '90 RS
Engine: 377 LSX
Transmission: Magnum T56
Re: KYB strut mount bad in two months (almost hit my master cylinder)

Time for non stock replacement types. Look at UMI, Founders, etc. Way beefier.
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Old Jun 8, 2022 | 11:36 AM
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midias's Avatar
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From: Henrietta NY
Car: 1984 Trans Am L69
Engine: Sniper EFI Powered 355
Transmission: WC T5 w/ Steel Support Plate
Axle/Gears: 3.42 10 Bolt Posi
Re: KYB strut mount bad in two months (almost hit my master cylinder)

Wow, I was going to buy KYB for my TA restore. Glad I dug a little deeper and got founders.
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Old Jun 10, 2022 | 11:59 AM
  #9  
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Re: KYB strut mount bad in two months (almost hit my master cylinder)

Do you have the bumpstop installed or has it been removed or shortened?
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Old Jun 10, 2022 | 01:02 PM
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Car: '83 Firebird (T/A Clone)
Engine: 350 with L-69 components
Transmission: 700R-4, 2000 RPM stall converter
Axle/Gears: 10-bolt/3.73 ..
Re: KYB strut mount bad in two months (almost hit my master cylinder)

Summit currently has the Koni yellows on sale; cheaper than Founders...

Last edited by T.L.; Jun 10, 2022 at 11:28 PM. Reason: Typo
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Old Jun 10, 2022 | 08:47 PM
  #11  
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From: Utica NY
Car: 88 Trans Am
Engine: 305 TBI
Transmission: 700R4
Axle/Gears: 3:42 open diff
Re: KYB strut mount bad in two months (almost hit my master cylinder)

My whole suspension has been rebuilt twice in 17 years which how long I owned the car. I replaced everything(ball joints, inner and outer tie rods center link,etc with good stuff like moog, new springs The bump stop on the strut seems to me just a wimpy sponge that keeps the boot falling off the strut to protect the spring. Yes I did replace the bump stops on the control arms

Finding replacement strut boots were really hard this time around . I remember as a teenager when you could find parts for these cars. A lot has changed in 15 plus years. I loved these cars since I was a kid, I’m now 40.
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Old Jun 10, 2022 | 08:49 PM
  #12  
zupta82's Avatar
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From: Utica NY
Car: 88 Trans Am
Engine: 305 TBI
Transmission: 700R4
Axle/Gears: 3:42 open diff
Re: KYB strut mount bad in two months (almost hit my master cylinder)

Oops!! I meant to protect the piston on the strut. Sorry I was typing too fast
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Old Jun 10, 2022 | 10:36 PM
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Re: KYB strut mount bad in two months (almost hit my master cylinder)

Get a set of solid strut mounts, Founders, DSE ex ex.
they are better in every aspect.
Better handling
Better alignments
Better longevity
Even better ride quality.
Spray some graphite lube in the mono ball every 10K miles or so, and they'll outlive the car.

One of my original vidoes covers installing the Founder's mounts.
If you are decent with string alignments, you can maybe skip spending another $100 on one.
Or just get a lifetime alignment.
​​​​​​
https://m.youtube.com/watch?v=Ac72q0wCgmk
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Old Jun 11, 2022 | 09:15 AM
  #14  
zupta82's Avatar
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Posts: 239
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From: Utica NY
Car: 88 Trans Am
Engine: 305 TBI
Transmission: 700R4
Axle/Gears: 3:42 open diff
Re: KYB strut mount bad in two months (almost hit my master cylinder)

Thank you for the detail on these strut solid strut mounts. I recall in the past over the years the alignment was really difficult for some shops to get it dialed in. I had a tool that bolts up to fender, it looks like a turnbuckle with a hook. They had to just settle on feel and not so much by the specs on the machine.

This time the shop was mentioning about a camber bolt kit. This would give you about an extra 1.5 degrees in adjustment, You guys have have got me convinced, I just realized they are a pretty crappy design on GM’s part. Unfortunately, I forgot to mention I did already replace them with a warranty set from rockauto.

I was careful in marking them and measuring the distance from the centerline of each bolt to the radii of the ends of the elongated adjustment slots. I used the inside diameter jaws of a dial caliper to ultimately make these measurements. I also scribed the outline of each strut mount, I know it’s crude, I think it will be ok for now, it’s going down the road straight with no pulling. Last month I bought a set of bilstein rear shocks, so money is a little tight now. Anybody ever been in a similar instance
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