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Willcox Rear Adjustable Strut Rod Installation

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Old Aug 19, 2011 | 04:59 PM
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Default Willcox Rear Adjustable Strut Rod Installation

Just received the SU39J units today but no instructions! The order of round washers, square washers, lock washers, bolts, nuts, etc. at the old stock cam end is not explained. Does anyone have a diagram or photo of how these things go on?

I assume a brake clean compound spray is necessary to clean up the adjusting threads before applying blue LocTite for the locking nuts on the shafts. I hear/read they have a tendency to loosen up so I need to clamp them down very tightly. Reluctant to use red LocTite.

http://willcoxcorvette.com/product_i...d7d8a7f557b29a

Last edited by Paul L; Aug 19, 2011 at 05:43 PM.
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Old Aug 19, 2011 | 08:05 PM
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Paul
We thought you were kidding, what no inst.! We always get outasight installation diagrams, etc. w/ headers, cam etc!


Anyway some Inst. here under Poly Adj. Strut Rods:
http://www.vbandp.com/C2-C3-Corvette/View-category.html
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Old Aug 19, 2011 | 08:28 PM
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Originally Posted by Ganey
Paul
We thought you were kidding, what no inst.! We always get outasight installation diagrams, etc. w/ headers, cam etc!


Anyway some Inst. here under Poly Adj. Strut Rods:
http://www.vbandp.com/C2-C3-Corvette/View-category.html
No instructions, nada, etc. I THINK I know how it goes on but thinking is not enough for such a crucial component and I do not take chances. Basic instructions are surely a necessity for selling these parts. Thanks for the links. I'll sort it out with more mechanical friends. You may have sensed that I am not a happy camper this evening.

Last edited by Paul L; Aug 19, 2011 at 08:35 PM.
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Old Aug 19, 2011 | 08:56 PM
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Paul

This should be all you need to install the adjustable struts

http://www.vbandp.com/C2-C3-Corvette/View-category.html

Scroll down the page to "Poly Adjustable Strut Rods" and you can open or download the instruction page

Last edited by stpman; Aug 19, 2011 at 08:58 PM.
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Old Aug 19, 2011 | 10:28 PM
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Sorry about that Paul... I suppose someone left them out of the kit. If you don't figure it out let me know and I'll get you some posted. I just saw this, I've been gone most of the day.
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Old Aug 20, 2011 | 12:47 PM
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I have pretty much sorted things out (at least the planning). The VBP instructions speak of welding the strut rod bracket tabs. That's a problem as I do not have a welder. They also say to remove the rear spring bolt? I would guess that is to get a good clear whack at the shock mount? Comments would be welcomed.
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Old Aug 20, 2011 | 05:49 PM
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I've installed these and not welded the bracket tabs. The bracket from the factory was spot welded and good enough for standard driving. If you are doing a performance thing then yes you may want to weld them but for daily driving I don't see this as needed.

Yes, you'll need to remove the spring end bolt from the car. Doing this removes the spring load from the arm and allows for an easier installation plus... you'll get a clan whack at the bolt for sure.

Just be careful when you jack up the spring. We use C clamps on the spring with a 3" section of L channel. It gives the jack something to rest against and not slip up the spring.

Willcox
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Old Aug 20, 2011 | 07:51 PM
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Originally Posted by Willcox Corvette
I've installed these and not welded the bracket tabs. The bracket from the factory was spot welded and good enough for standard driving. If you are doing a performance thing then yes you may want to weld them but for daily driving I don't see this as needed.

Yes, you'll need to remove the spring end bolt from the car. Doing this removes the spring load from the arm and allows for an easier installation plus... you'll get a clan whack at the bolt for sure.

Just be careful when you jack up the spring. We use C clamps on the spring with a 3" section of L channel. It gives the jack something to rest against and not slip up the spring.

Willcox
My thanks for your reply. Having just had a VBP rear composite spring installed I have a strong sense of deja vu re those bolts. Yes, I know how to do it.

It seems the force of the strut at the differential end is centered on the lipped washers, not the inside sleeve of the bushings as the bolt is much smaller than the ID of the sleeves. Interesting design; those sleeves have no purpose?? Why not just have the bolt match the ID of the sleeve, lube the bolt shaft for movement, and have non-lipped washers at the ends to protect the ends of the rubber/poly? Just curious.

These aftermarket units are very strange. I may just buy new rubber bushings for my original strut rods. At least they don't loosen up as I have heard and read for the poly.

Last edited by Paul L; Aug 20, 2011 at 08:49 PM.
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Old Aug 21, 2011 | 09:40 AM
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Heim joints, Paul74, Heim joints...
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Old Aug 21, 2011 | 10:13 AM
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Originally Posted by paul 74
I have pretty much sorted things out (at least the planning). The VBP instructions speak of welding the strut rod bracket tabs. That's a problem as I do not have a welder. They also say to remove the rear spring bolt? I would guess that is to get a good clear whack at the shock mount? Comments would be welcomed.
Welding the tabs is not necessary, but provides a little extra insurance. It's easy to do. Take the bracket off and take it to a shop that can weld it for you. It only takes a few minutes to weld and shouldn't cost much. A local welding shop did mine for free with a MIG welder.
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Old Aug 21, 2011 | 01:11 PM
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Originally Posted by thegazman
Welding the tabs is not necessary, but provides a little extra insurance. It's easy to do. Take the bracket off and take it to a shop that can weld it for you. It only takes a few minutes to weld and shouldn't cost much. A local welding shop did mine for free with a MIG welder.
Yes, it does sound like cheap insurance.
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Old Aug 22, 2011 | 10:38 AM
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Originally Posted by 71scgc
Heim joints, Paul74, Heim joints...
You will not be sorry.
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