QA1 Coilovers?
Thread Starter
Drifting
Joined: Apr 2007
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From: NorCal @SithLordGS
I had a slight noise issue with the original brackets on my C5 as well but QA1 exchanged the upper bracket for the new one with the hole in it that prevents the shock body end loop from making contact. No more clunk.
Looking at the pictures of the shock installed in the brackets it almost appears the brackets were reversed left to right. Mine had an "L" marked on the left side bracket and an "R" on the right. The brackets look very similar but they can not be switched. My shocks are straight in the brackets with the weight on the wheels. As far as the spring rates go I have 450s on the front and 550s on the rear. I love the way it handles with that set up. Good luck.
Looking at the pictures of the shock installed in the brackets it almost appears the brackets were reversed left to right. Mine had an "L" marked on the left side bracket and an "R" on the right. The brackets look very similar but they can not be switched. My shocks are straight in the brackets with the weight on the wheels. As far as the spring rates go I have 450s on the front and 550s on the rear. I love the way it handles with that set up. Good luck.
Thread Starter
Drifting
Joined: Apr 2007
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From: NorCal @SithLordGS
Based on the QA1 installation instructions and also the pix I've posted, it appears that I have installed the correctly.
The mounting ears are perpendicular with the mounting base. The mounting ears need to be canted to match the shock angle. I'm going to see about modeling up the brackets, shocks, and an angled shim in Solidworks and see if my machine shop will proto some for me.
I still firmly believe that the upper shock mount should be a stud design. It appears that the other coilover manufactures use a stud mount for their rear shocks....
Drifting
Joined: Feb 2010
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Based on the QA1 installation instructions and also the pix I've posted, it appears that I have installed the correctly.
The mounting ears are perpendicular with the mounting base. The mounting ears need to be canted to match the shock angle. I'm going to see about modeling up the brackets, shocks, and an angled shim in Solidworks and see if my machine shop will proto some for me.
I still firmly believe that the upper shock mount should be a stud design. It appears that the other coilover manufactures use a stud mount for their rear shocks....
The welds on the QA1 mounting ears, well......
Thread Starter
Drifting
Joined: Apr 2007
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From: NorCal @SithLordGS
I hope QA1 is reading...
Drifting
Joined: Feb 2010
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Likes: 34
Thread Starter
Drifting
Joined: Apr 2007
Posts: 1,543
Likes: 157
From: NorCal @SithLordGS
Drifting
Joined: Feb 2010
Posts: 1,527
Likes: 34
Bottom line, what count is, as long as your are happy with the weld and performance.
Lots of luck!
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Thread Starter
Drifting
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From: NorCal @SithLordGS
Mahalo
Thread Starter
Drifting
Joined: Apr 2007
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From: NorCal @SithLordGS
Here's pix of driver and passanger side with full weight of car on suspension. I took pix through the wheel. I'll try and get pix from different angles to show that the shock and brackets are not parallel.
I'm getting the poly bushing, that QA1 sent, modified to fit the brackets today. I'll post pix later on that....
I'm getting the poly bushing, that QA1 sent, modified to fit the brackets today. I'll post pix later on that....
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From: Rochester New York
Thread Starter
Drifting
Joined: Apr 2007
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From: NorCal @SithLordGS
I installed new bushings
re-verified that they were correctly installed per instructions sent by QA1
Installed onto car and put full weight of car onto shock and to these pix. You will see that the shock angle and bracket angle are still not parallel with each other
re-verified that they were correctly installed per instructions sent by QA1
Installed onto car and put full weight of car onto shock and to these pix. You will see that the shock angle and bracket angle are still not parallel with each other
Last edited by gr86ss; Oct 4, 2011 at 10:39 AM.
Thread Starter
Drifting
Joined: Apr 2007
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From: NorCal @SithLordGS
These pix show that there is binding/scrapping of sorts with the shock body and springs. Note on the second and third pix that the spring is scrapping on the black anodized spring seat. This is the shock that is making the noise.
Thread Starter
Drifting
Joined: Apr 2007
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From: NorCal @SithLordGS
I swapped the left shock with the right shock and fully disconnected the sway bar to rule out swaybar end link noise and also to rule out sway bar interference with springs.
The noise transferred from the left to the right. I've narrowed it down to one shock making noise, but both shock show scrape marks on the shock bodies.
There is a NOTICABLE ride difference (read: harsher) with the poly bushings. The noise still persist. This is my daily driver and the noise is driving me CRAZY.... sounds like the suspension is going to fall apart back there.
I will be contacting QA1 today and see what they can do to rectify this.
The noise transferred from the left to the right. I've narrowed it down to one shock making noise, but both shock show scrape marks on the shock bodies.
There is a NOTICABLE ride difference (read: harsher) with the poly bushings. The noise still persist. This is my daily driver and the noise is driving me CRAZY.... sounds like the suspension is going to fall apart back there.
I will be contacting QA1 today and see what they can do to rectify this.
Thread Starter
Drifting
Joined: Apr 2007
Posts: 1,543
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From: NorCal @SithLordGS
