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Old 12-09-2012, 01:54 PM   #1
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Aftermarket splitters and diffusers

There are lot of splitters, air dams, and a couple of rear diffusers out there for the GTO. But have any of them ever been proven to be more than cosmetic? Has anyone ever proven that thier product actually generates downforce?
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Old 12-09-2012, 02:01 PM   #2
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Quote:
Originally Posted by OldskoolGP...View Post
There are lot of splitters, air dams, and a couple of rear diffusers out there for the GTO. But have any of them ever been proven to be more than cosmetic? Has anyone ever proven that thier product actually generates downforce?

None of them; I'm working on a real splitter tho.
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Old 12-09-2012, 03:18 PM   #3
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I wouldn't be surprised if some of the splitters actually did something, but no one in their right mind would spend the money to rent a wind tunnel for a couple days to sell a $100 part.
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Old 12-09-2012, 03:38 PM   #4
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Just the race parts of the GTO-R.
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Old 12-09-2012, 03:54 PM   #5
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Old 12-09-2012, 04:08 PM   #6
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Quote:
Originally Posted by 87LC2...View Post
I wouldn't be surprised if some of the splitters actually did something, but no one in their right mind would spend the money to rent a wind tunnel for a couple days to sell a $100 part.

If they are not strong enough for a 180lbs person to stand on them they are not doing anything.

I'm planning on making an adjustable 4-6in splitter. It will have a frame that attaches to the frame/engine cradle and be made of Alumalite. I will be quickly detachable for getting on a trailer or if you want to pull it off when you drive on the street.

Our cars are limited in the front for tire size so any extra downforce is welcome.
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Old 12-09-2012, 07:07 PM   #7
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I'd love to find an adjustable rear spoiler that used the factory trunk holes, put it on for the track, put the factory one on the rest of the time. Ever see the HRT Monaro 427? Something like that.

http://www.webwombat.com.au/motoring.../8_10_hol3.htm

Last edited by OldskoolGP; 12-09-2012 at 07:12 PM.
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Old 12-09-2012, 07:29 PM   #8
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Quote:
Originally Posted by OldskoolGP...View Post
I'd love to find an adjustable rear spoiler that used the factory trunk holes, put it on for the track, put the factory one on the rest of the time. Ever see the HRT Monaro 427? Something like that.

http://www.webwombat.com.au/motoring.../8_10_hol3.htm

A real rear spoiler would smurf up our rear deck; they need supports going down to the floor of the trunk/frame rails.
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Old 12-10-2012, 08:17 AM   #9
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Hmmm, I'd have thought it would be ok since there's that steel lip that goes under the truck lid. You may have to spread the load of the spoiler's mounting points out, but I would think that the trunk lid could support 200-300 pounds of downforce without a problem.

Last edited by OldskoolGP; 12-10-2012 at 04:45 PM.
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