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HFR_Racer's Avatar
 
Join Date: Sep 2005
Location: Indiana
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Rear wing (lip rubber) - pulled stud repair..

I have a pulled stud on my rear wing lip rubber. Has anyone had any success with a repair?

I have a couple of ideas but I wanted to ask here to see if anyone has a proven solution.

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HFR_Racer

'87 930, 3.3 liter, K27 hybrid, Kokeln IC, Andial, B&B, Borla, 17" Supercups.

Last edited by HFR_Racer; 04-05-2010 at 07:17 PM.. Reason: Added wing stud repair information...
Old 04-03-2010, 08:12 AM
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Look what I did!!! The ultimate Whale Tail Rubber stud replacement.
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79 911SC RoW
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Old 04-03-2010, 08:31 AM
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Excellent Pete... I didn't search "whale tail". I'll try this.
Old 04-03-2010, 02:01 PM
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I thought I'd add my progress thus far on the stud repair.

Progress from this morning..

I've removed the rusted metal bracket that the studs were orginally welded to.. This c-shaped sheet metal peice is molded into the side of the wing. It seems that each side of the wing and the rear are independent pieces. This is very easy to do.. First.. Cut out the existing metal with a carpet knife. Then use a rotary wire brush to remove the scaled on rusty metal from the rubber (foam) wing as needed. This is very easy with a driven wire brush.



I then created a prototype bracket out of a piece of aluminum sheet I had in my garage.






A little test fitting:



I've created a template using the existing stud spacing from the good side of my wing.



I plan to use windshield adhesive from my local auto body supply store instead of the panel adhesive that was previously suggested.

I'll post pics of the gluing and final piece when it's finished.

HFR_Racer
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HFR_Racer

'87 930, 3.3 liter, K27 hybrid, Kokeln IC, Andial, B&B, Borla, 17" Supercups.
Old 04-04-2010, 11:52 AM
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More progress from today..



I purchased a piece of perforated sheet-metal from my local hardware store to make the bracket.



This will allow plenty of bonding surface for the adhesive. The OEM bracket had many holes punched in it for the same purpose.

Then I fabricated a "stud support board" to properly align and hold the studs while welding to the bracket and setting into the wing.





I then fitted the steel bracket to the studs and clamped it up prior to welding.



Also, I pucked up the adhesive I plan to use today at my local auto supply house.



More to come in the next few days..
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HFR_Racer

'87 930, 3.3 liter, K27 hybrid, Kokeln IC, Andial, B&B, Borla, 17" Supercups.
Old 04-05-2010, 07:15 PM
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Good job. Over the years I have repaired a few of these tail rubbers.

I think you found yourself a side business.

Thanks for posting the updates.
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Old 04-05-2010, 09:12 PM
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The wing repair is coming together really nicely and the windshield adhesive works very well and provides an excellent bond to the existing wing material. I'll post the final pics later this week since I'll be out of town for a few days of fun
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HFR_Racer

'87 930, 3.3 liter, K27 hybrid, Kokeln IC, Andial, B&B, Borla, 17" Supercups.
Old 04-07-2010, 03:26 AM
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Repaired wing ( in service ) :)

All is well with my wing repair. I've speed and heat tested it for about a week now

I've attached photos of the finished product.





Enjoy the summer..

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HFR_Racer

'87 930, 3.3 liter, K27 hybrid, Kokeln IC, Andial, B&B, Borla, 17" Supercups.
Old 04-18-2010, 12:08 PM
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Looks great!
Old 04-18-2010, 07:24 PM
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