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Wavy chin spoiler?

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Old Mar 31, 2026 | 02:27 PM
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Default Wavy chin spoiler?

89 3.2

Ever since I've owned this (mostly original) 911, the chin spoiler has been a bit "wavy."

I finally decided to remove and inspect, fully expecting to see some sort of front valance damage as the root cause.

All OE fasteners were in place, and once I removed the spoiler, I could not find any sort of damage that could be causing the waviness.

There is also a couple mm gap between the spoiler and the valance. The fastener holes were tight and didn't allow any adjustment to pull it in closer.

Ideas?

Replacing on a whim is a bit expensive, just to find that a new one does the same thing.

Photos attached.




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Old Apr 1, 2026 | 12:53 AM
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I'm guessing that spoiler was owner-installed, and they didn't do a great job drilling the mounting hole locations.

Mark
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Old Apr 1, 2026 | 07:30 AM
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Originally Posted by Mark Salvetti
I'm guessing that spoiler was owner-installed, and they didn't do a great job drilling the mounting hole locations.

Mark
Interesting. Spoiler package is part of the original option list, and there is no evidence of crash damage necessitating a front valance replacement, but anything is possible I guess.

Is there not a front valance OE part number that comes pre-drilled for the chin spoiler?
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Old Apr 2, 2026 | 01:00 AM
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If it came with the spoiler package, then I probably have the wrong idea. Maybe there has been some damage. I think if you can loosen the mounting plates you may be able to adjust the spoiler a small amount. This is a good thread with pictures: https://forums.pelicanparts.com/pors...tion-pics.html

I don't think there are any pre-drilled valences. Maybe the factory had some on the production line, but I don't think they are sold on the aftermarket.

Mark
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Old Apr 2, 2026 | 07:05 AM
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Thanks, I’ve seen that thread, but it covers an install on a car that didn’t come with the chin spoiler. I can’t seem to find photos of what an OE set up looks like.

I suspect, even though there is no mention in the service history, and despite that everything in the area looks untouched, that maybe the valance was replaced at one point, and the installer drilled the holes wrongly.

The holes on my car are exactly the size of the fasteners, no room for sliding in any direction. But I have no photos of OE to see if they are larger to allow for adjustment.

I may decide to drill them a bit larger to see if I can pull the spoiler in tighter.

Thanks.
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Old Apr 2, 2026 | 10:57 AM
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Originally Posted by TDS911
The holes on my car are exactly the size of the fasteners, no room for sliding in any direction. But I have no photos of OE to see if they are larger to allow for adjustment.
I wasn't clear, I meant the holes in the rubber. I think they are larger than the fasteners, so if you loosen those clamps, you may be able to slide the rubber around a bit.

I have a used rubber lip spoiler waiting for me to install. I can take a look when I get back home tonight.

Mark
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Old Apr 2, 2026 | 03:48 PM
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Originally Posted by Mark Salvetti
I wasn't clear, I meant the holes in the rubber. I think they are larger than the fasteners, so if you loosen those clamps, you may be able to slide the rubber around a bit.

I have a used rubber lip spoiler waiting for me to install. I can take a look when I get back home tonight.

Mark
if I recall, the spoiler itself has oval holes to permit l/r adjustments, but once the OE metal “spacers” are used that slide over the threaded studs of the “plate bolts”, there’s not a lot of adjustment left over, even going left and right.

definitely no adjustment to pull it closer to valance.

Spacers circled in red in this photo, plate bolts in green.

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Old Apr 3, 2026 | 08:19 AM
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I was thinking of adding the chin spoiler to my cab, but knowing I'd have to drill into the valence is not something I want to do. I think I need to buy a used valance for this purpose!
Good luck trying to get it straight, that would drive me nuts!
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Old Apr 3, 2026 | 12:50 PM
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Originally Posted by veleno
I was thinking of adding the chin spoiler to my cab, but knowing I'd have to drill into the valence is not something I want to do. I think I need to buy a used valance for this purpose!
Good luck trying to get it straight, that would drive me nuts!
No joke! Would drive me bonkers also.

Fortunately this condition is not typical of these chin spoilers based on my experience seeing them. The one on my '88 Carrera has none of that. (Original to the car).


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Old Apr 4, 2026 | 07:58 AM
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Originally Posted by Ironman88
No joke! Would drive me bonkers also.

Fortunately this condition is not typical of these chin spoilers based on my experience seeing them. The one on my '88 Carrera has none of that. (Original to the car).
That's good to know. On cars that came with the spoiler, were the holes drilled at the factory or dealer?
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Old Apr 4, 2026 | 11:46 AM
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Originally Posted by TDS911
if I recall, the spoiler itself has oval holes to permit l/r adjustments, but once the OE metal “spacers” are used that slide over the threaded studs of the “plate bolts”, there’s not a lot of adjustment left over, even going left and right.
Here is a photo of my used chin spoiler awaiting installation. As TDS said, the oval holes only allow adjustment left/right. I had thought in/out was possible too. I haven't purchased the hardware kit yet, but I can see how those little cylindrical spacers cut down on how much you can adjust things as well.




Mark
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Old Apr 4, 2026 | 12:29 PM
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Originally Posted by veleno
That's good to know. On cars that came with the spoiler, were the holes drilled at the factory or dealer?
I don't know the factual answer to this. I would imagine that the spoiler was fitted at the factory.

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Old Apr 5, 2026 | 01:08 PM
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Well, I may be getting closer to a solution here.

I decided to take another look-see at the spoiler today and discovered, lo and behold, that none of my stud plates actually have the spacers!

Only the 10mm bolts near the ends have the spacers. My memory ain’t so good these days, apparently.

So the stud plates aren’t holding the spoiler exactly where it should be with this extra gap around the studs, and they are “squishing” the spoiler more than they should be when tight.

91150334900 for the spacers. Ordering some tomorrow from my local dealer and will report back.
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