C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Rubberized undercoating is the bomb

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Old Jul 20, 2008 | 04:44 PM
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Default Rubberized undercoating is the bomb

I just finished doing my spare tire carrier and it looks great now on to my fender wells. I have pics but can not for the life of me figure out how to put them on.
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Old Jul 20, 2008 | 04:56 PM
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Sign up for free at photobucket.com and post your pix. Then left click the bottom tab that says IMG.Then come over here and right click and paste in your post.It's easier if you have two windows open.
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Old Jul 20, 2008 | 05:06 PM
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That's how I do it!.............I can't wait to see what you've done!

Noland
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Old Jul 20, 2008 | 05:28 PM
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I used the Rubberized undercoat on my wheel wells too!

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Old Jul 20, 2008 | 05:49 PM
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Has anyone who has done this umderneath the car nticed a reduction in road noise and or resonance?
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Old Jul 20, 2008 | 05:56 PM
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Originally Posted by 96 lt-4
Has anyone who has done this underneath the car nticed a reduction in road noise and or resonance?
I shot the entire rear end of my car when I took the D44 out, it does help and I noticed rust on my gas tank, so I sanded my tank to get the rust off , cleaned it with brake cleaner, shot some primer on it and rubberized it.

I shot a coat , let it dry, then shot another coat etc
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Old Jul 20, 2008 | 06:03 PM
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Where do you buy this stuff at? Is it out of a can or do you use a spray gun?
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Old Jul 20, 2008 | 09:32 PM
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I got mine at Wal Mart 3.89 a can mar hyde brand. The 3m was about 4 bucks more but they are made by the same company. Im gonna try and post my pics in a second.
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Old Jul 20, 2008 | 09:40 PM
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The picture with it on the grass was what it looked liked its really hard to tell but dang what a difference.
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Old Jul 20, 2008 | 09:42 PM
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Oh and thanks for the photobucket info. Its pretty easy.
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Old Jul 20, 2008 | 09:53 PM
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Originally Posted by LD85
I used the Rubberized undercoat on my wheel wells too!
How did you prep them prior to spraying the stuff on? And how well do they clean up once they've seen some street time? TIA...
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Old Jul 20, 2008 | 10:04 PM
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I used castrol super clean and water. Soak it down rub it wet it rub it and then dry in the sun then sprayed. Wait 4 to 6 hrs to dry and you are done.
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Old Jul 21, 2008 | 12:06 AM
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Wal-Mart eh? Looks like I've found a project for this week..
Looks great.
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Old Jul 21, 2008 | 02:41 AM
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Looks beautiful.
If you could guess, about how much weight does it add?
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Old Jul 21, 2008 | 09:48 AM
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Ohh very very little on this piece that [I] did I cant tell that it is any heavier. I put on 2 coats I dont think you need more than that on anything it sprays out a brown color and dries to a black. I was a little worried at first but the longer it sets the better it looks just take your time.
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Old Jul 21, 2008 | 09:51 AM
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Quick question. from the look of the wheel well it seems to be a little textured, or is it as smooth as the orgional plastic? Looks GREAT!
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Old Jul 21, 2008 | 10:30 AM
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Originally Posted by dmukina
Quick question. from the look of the wheel well it seems to be a little textured, or is it as smooth as the orgional plastic? Looks GREAT!

You can buy it in smooth or coarse texture
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Old Jul 21, 2008 | 11:07 AM
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I have used this stuff on a few non-vette projects. My experience is that it is durable and inexpensive. It does turn a bit black-gray in color from sunlight. I have used it on an ATV and on a utility trailer. Maybe just fine up under the car.
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Old Jul 21, 2008 | 06:09 PM
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Originally Posted by 96 lt-4
Has anyone who has done this umderneath the car noticed a reduction in road noise and or resonance?
I had the whole car undercoated. Then I went back and removed all the wheel wells and did those too. (Undercoater didn't do them). I also installed sound deadner pads in the doors (standard equip on LT1s).

The difference was fairly dramatic. In fact, it kinda made the car feel a little slower cause of the road isolation -- but not much. I liked the "upgrade".

I originally wanted a C3 but did not purchase due to road noise. An undercoated C4 is what I needed.

This mod won't do much for resonance though. That's an issue with exhaust tuning vs. cabin harmonics. Some claim it's lessened by extending the pipes out past the rear bumper far enough.

If you have loud exhaust, change it. If you have stock, it really shouldn't be much of a problem.

BTW: The wheel wells included removal of the pieces attached to the underside of the hood, the fronts shown by LD85, and the rear wells. I did both sides of all 3.

Last edited by GREGGPENN; Jul 21, 2008 at 06:14 PM.
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Old Jul 21, 2008 | 06:11 PM
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Very nice work keeping your car clean! If it weren't for the rotors, I'd say it looks new. With rust on the rotors (and a little dirt on the control arms), I'd say 200 miles.

Again, very nice!
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