[chip3130]

Was driving on the highway this past weekend and experienced a sharp dip (not a pothole)... once going over it i heard a BOOOOOF and thought i blown out a tire, pulled over to the shoulder and took a look and it looked like the rear driver side Spring collapsed... thoughts?

This seems pretty rare, but could be something else. My mechanic is taking a look at it this weekend to diagnose, obviously anxious, what do you think?

I do have H&R springs installed.

[Hoa]

It does look like a spring related issue. Strut would not make it come that low and any arm will make the wheel bend a certain direction

[Unspec]

Yup, your spring probably "slipped" down. At that point, your strut is likely blown as well.

[Blue Angel]

Please post pics of the failure, it will be interesting to see what went wrong.

[Blue Angel]

Any update on the failure?

[chip3130]

Will post pics once I’m at a computer, but it was a knuckle collapse, completely stripped from the wheel hub. 😪

[Blue Angel]

WAT?!? Wow, I can't wait to see pictures of this.

When you hit the sharp dip did the car bottom out? Were the bump-stops still installed on the shocks?

[Blue Angel]

Did you ever get a chance to put those pics on your computer?

[musclesmarinara75]

[QUOTE=chip3130;27634165]Was driving on the highway this past weekend and experienced a sharp dip (not a pothole)... once going over it i heard a BOOOOOF and thought i blown out a tire, pulled over to the shoulder and took a look and it looked like the rear driver side Spring collapsed... thoughts?

This seems pretty rare, but could be something else. My mechanic is taking a look at it this weekend to diagnose, obviously anxious, what do you think?

I do have H&R springs installed.[/

Is that College Point in Queens.. looks familiar

[chip3130]

Originally Posted by Blue Angel

Did you ever get a chance to put those pics on your computer?

[chip3130]

[QUOTE=musclesmarinara75;27814325]

Originally Posted by chip3130

Was driving on the highway this past weekend and experienced a sharp dip (not a pothole)... once going over it i heard a BOOOOOF and thought i blown out a tire, pulled over to the shoulder and took a look and it looked like the rear driver side Spring collapsed... thoughts?

This seems pretty rare, but could be something else. My mechanic is taking a look at it this weekend to diagnose, obviously anxious, what do you think?

I do have H&R springs installed.[/

Is that College Point in Queens.. looks familiar

lol, on my way back to Queens actually, this happened near Baychester, exit 13 on 95 south.

[chip3130]

Originally Posted by Blue Angel

WAT?!? Wow, I can't wait to see pictures of this.

When you hit the sharp dip did the car bottom out? Were the bump-stops still installed on the shocks?

Shocks still good, and yes car bottomed out immediately. Was still able to move, didn’t lose control but the wheel was pressed up against the body. Car was repaired, knuckle fixed with new wheel hub.

[ezaircon4jc]

Originally Posted by chip3130

That sure looks like a blown shock to me. They should be dry and that one has significant moisture (at the top).

[Blue Angel]

Ah, looks like the bolt that holds the shock to the knuckle broke off.

This is interesting. That bolt has a very high torque spec (it's apparently very hard to remove). I wonder if it was under-torqued when installed, leading to a fatigue failure?

I would consider having the bolt on the other side replaced, and having the torque on both sides verified. My $.02

[Unspec]

Originally Posted by Blue Angel

Ah, looks like the bolt that holds the shock to the knuckle broke off.

This is interesting. That bolt has a very high torque spec (it's apparently very hard to remove). I wonder if it was under-torqued when installed, leading to a fatigue failure?

I would consider having the bolt on the other side replaced, and having the torque on both sides verified. My $.02

Doesn't look like the bolt failed - looks like they were in the middle of disassembly when the photo was taken.

[Blue Angel]

Originally Posted by Unspec

Doesn't look like the bolt failed - looks like they were in the middle of disassembly when the photo was taken.

chip3130, can you confirm if this is a pic of the failure, or during disassembly? If during disassembly can you confirm the point of failure (i.e. were there other failed components not shown in these pictures)?

[chip3130]

Blue Angel is correct. This photo is of the car on lift for initial inspection. Bolt failed.

[Blue Angel]

Originally Posted by chip3130

Blue Angel is correct. This photo is of the car on lift for initial inspection. Bolt failed.

Thanks for clarifying!

Looks like that bolt is supposed to be torqued to 250 Nm (184 ft-lbs), assuming the member who posted the info is correct:

https://f10.5post.com/forums/showthread.php?t=1464505

Sounds about right. Since it's tough to get to I can see why someone might not take the time to torque it properly, which could lead to a fatigue failure. Scary stuff!

[Unspec]

Originally Posted by Blue Angel

Thanks for clarifying!

Looks like that bolt is supposed to be torqued to 250 Nm (184 ft-lbs), assuming the member who posted the info is correct:

https://f10.5post.com/forums/showthread.php?t=1464505

Sounds about right. Since it's tough to get to I can see why someone might not take the time to torque it properly, which could lead to a fatigue failure. Scary stuff!

Can confirm that it is 250nm, and can confirm it's a bitch to get to. It took me 2 days to torque it to spec because I was so gassed after installing my coilovers and I needed rest. You need to take off the rear toe arm to get any realistic amount of swing on the torque wrench. You basically have to bench press the car if you don't have a lift lol

[Blue Angel]

Thanks for the advice! My coilovers just arrived so I'll be installing them soon.