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      01-07-2024, 10:49 PM   #1
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Polycarbonate (plastic) Windows?

Hey,

Just wondering if anyone has tried fitting the polycarbonate window kit available online? I've searched around and not found anything.

My car is 95% track and lives in a garage, so I'm not worried about the usual disadvantages of poly, but I am purely doing it so I don't have to wind my windows down on track days, which is a stupid rule.

Obviously I'd lose adjustment etc but I don't care. More interested in fitment.

https://www.plastics4performance.com...ate-window-kit
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      01-07-2024, 11:16 PM   #2
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Originally Posted by TyreReviews View Post
Hey,

Just wondering if anyone has tried fitting the polycarbonate window kit available online? I've searched around and not found anything.

My car is 95% track and lives in a garage, so I'm not worried about the usual disadvantages of poly, but I am purely doing it so I don't have to wind my windows down on track days, which is a stupid rule.

Obviously I'd lose adjustment etc but I don't care. More interested in fitment.

https://www.plastics4performance.com...ate-window-kit
Have them. Haven’t seen a rule book where these exclude you from having your windows down.

Most of those exceptions are for factory cars with lexan.
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      01-08-2024, 03:28 PM   #3
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Originally Posted by DRLane View Post
Have them. Haven’t seen a rule book where these exclude you from having your windows down.

Most of those exceptions are for factory cars with lexan.
Ah poop.

How do you rate the fitment and quality? Did you retain movement?

Plan B would be to fix them in place so they can't be wound down
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      01-08-2024, 04:59 PM   #4
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Ah poop.

How do you rate the fitment and quality? Did you retain movement?

Plan B would be to fix them in place so they can't be wound down
They’re top notch. If you’re raising and lowering windows though you’ll likely want glass a plastic will inevitably scratch.

If you go carbon doors, or completely gut the door and simply slide up / down by hand then Lexan works. They’re best far down the weight savings race car conversion route.

Mine are removable.
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      01-08-2024, 07:59 PM   #5
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See my build thread…have them all around on my F80

Great quality, fitment, and service.
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      01-08-2024, 09:49 PM   #6
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Originally Posted by ninekrpm View Post
See my build thread…have them all around on my F80

Great quality, fitment, and service.
You have them in the front doors on sliders? I think OPs hoping for a front door option.
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      01-09-2024, 01:33 AM   #7
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Quote:
Originally Posted by DRLane View Post
They’re top notch. If you’re raising and lowering windows though you’ll likely want glass a plastic will inevitably scratch.

If you go carbon doors, or completely gut the door and simply slide up / down by hand then Lexan works. They’re best far down the weight savings race car conversion route.

Mine are removable.
Only doing it so I can keep my windows up on track, so I guess i'll be fixing them

Quote:
Originally Posted by ninekrpm View Post
See my build thread…have them all around on my F80

Great quality, fitment, and service.
Will do, thanks!

Quote:
Originally Posted by DRLane View Post
You have them in the front doors on sliders? I think OPs hoping for a front door option.
Originally I thought sliding plexi would be allowed to keep up but if that's not the case I'll fix them. I don't really care to move them TBH, I'm not doing it for weight and I still have AC installed.
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      01-09-2024, 06:45 AM   #8
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Quote:
Originally Posted by DRLane View Post
You have them in the front doors on sliders? I think OPs hoping for a front door option.

Sorry, no…no window on the front doors. Just everywhere else…
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      01-09-2024, 08:30 AM   #9
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Quote:
Originally Posted by TyreReviews View Post
Originally I thought sliding plexi would be allowed to keep up but if that's not the case I'll fix them. I don't really care to move them TBH, I'm not doing it for weight and I still have AC installed.
No, I’m saying you can’t have windows up period. That rule exception is generally for for cars that have plastic windows from the factory. LMP etc.

So be careful installing permanent ones before confirming your understanding.
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      01-09-2024, 12:14 PM   #10
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Quote:
Originally Posted by DRLane View Post
No, I’m saying you can’t have windows up period. That rule exception is generally for for cars that have plastic windows from the factory. LMP etc.

So be careful installing permanent ones before confirming your understanding.
I've asked the track where i keep my car as it will be mostly run there.

There are plenty of converted road cars into race cars that run fixed, Caymans, 911s etc so I don't think it should be a problem but I'll report back.
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      01-09-2024, 02:59 PM   #11
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Quote:
Originally Posted by TyreReviews View Post
I've asked the track where i keep my car as it will be mostly run there.

There are plenty of converted road cars into race cars that run fixed, Caymans, 911s etc so I don't think it should be a problem but I'll report back.
Amazing if so! Make sure retain AC or some venting solution
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