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Discussion Starter #21
Sorry for the necro-reply (bringing a dead thread back to life..) but looking at your photo on a real computer where I can blow it up nice and big makes me think something is seriously wrong with your bumper:

View attachment 265542

That really does appear as a crack. And that would explain your center panel coming loose. Perhaps try some duct tape and see if that stops the feeling of instability. Since I believe that's the side the tow hook fitting is on, could the toe-hook license plate mount have wanged the section somehow? Or directed way too much air in the area?

Closer up:
View attachment 265544

Sure looks like one to me. A new bumper cover might be in order..

Seems strange that all the experts who've looked it over - overlooked something this obvious.
I understand the thought, but that is actually the seam between two pieces of clear bra you are seeing, not a crack in the bumper.

I've been busy collecting all of the pieces required for a third radiator install, so far not quite successfully as most retailers will not ship to my address here in Germany, which is an APO address.

I found a parts list for the kit on FCP Euro, and ordered all of the parts from a local Porsche dealer, but still am missing one critical part that I can't find the correct part number for. It's the part that clips to the bumper and secures the radiator cowl to direct the air. Also have yet to find the part number for the two nuts required to secure the bottom of the radiator to existing posts coming out of the body.

Any help in finding those two parts would be appreciated.
 

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Discussion Starter #22
Finally collected all of the parts needed and did the third radiator installation last weekend. The broken tab on the far right side was the source of my problem. The car no longer wanders all over the road as it has done for the last couple years. Took a couple pics along the way, but mostly I had my hands full. It only took about 2 hours to do the job though. Pretty straight-forward overall.

Now that the job is done, I think I need to go back to something more like factory camber settings for autobahn duty. It has GT3 front control arms and I think it's running around -1.5° of camber up front. It's pretty good up to around 100 mph, but beyond that it gets a little hairy, as the car tends to react a bit unpredictably over bumps. It's nice and stable as long as the road is flat, but once is starts to heave up and down a bit, the car is still not particularly stable or confidence inspiring. A part of me does wonder if the bottom air exit for the third radiator might add some lift to the front end, as it does feel a bit light in the front at high speeds.

On a side note, there was a ton of crud in between the factory radiators and the air conditioning heat exchangers. my car even has finer mesh covers over them, but it was still packed. Might be worth checking that every few years.


IMG_20191123_105737.jpg IMG_20191123_113526.jpg IMG_20191123_113534 (1).jpg IMG_20191123_105714.jpg
 

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Incurable Gearhead
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It’s too bad our center radiator isn’t factory ducted topside, like the GT3.
 
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