C2 Wheel Well Undercoating...what to use???

[James W.]

What is the best wheel well undercoating for a C2?

Thanks,

James

[Jimmy G.]

Re: C2 Wheel Well Undercoating...what to use???

I used 3M spray can and it is OK. Smoother than original but if sprayed from far enough away it passed.

[Larry M.]

Re: C2 Wheel Well Undercoating...what to use???

I used 3M spray can and it is OK. Smoother than original but if sprayed from far enough away it passed.

This is probably it. I have also used this.......requires a compressor and their application gun (their gun is a bit pricey, but cheaper guns are available).

https://www.amazon.com/3M-08864-Schu...a-570151012549

Larry

[Tom E.]

Re: C2 Wheel Well Undercoating...what to use???

I used the 3M Rocker Schutz this past summer when I restored my 67 roadster and it works very well. I bought one of the generic guns and it performed well. One can goes a long way, I bought two and didn’t use all of one.
Tom

[James W.]

Re: C2 Wheel Well Undercoating...what to use???

Jimmy, Larry, and Tom,


So you used the 3M one quart can with the spray gun. I found the 3M undercoating in the quart cans and the Astro spray gun on Amazon.

What range of air pressure do you recommend for the application?

Has anyone use a sea sponge to daub the undercoating after it is applied to make the surface texture look more authentic?


Thanks,

James

[Larry M.]

Re: C2 Wheel Well Undercoating...what to use???

https://multimedia.3m.com/mws/media/277562O/3mtm-body-schutz-rubberized-coating-black-pn-08864.pdf

It has been a long time since I used this, but I THINK about 30-40 psig at the gun. You will need to do a test panel to fine tune application and pressure.

Larry

EDIT: https://www.3m.com/3M/en_US/company-...3083455&rt=rud

[James G.]

Re: C2 Wheel Well Undercoating...what to use???

Nothing I have found on the commercial market builds or really looks like the original products... SOOO

I went mad scientist a couple of years ago and devised something which builds like the original and looks pretty darned good in the opinion of those of us who are insane. (it is a mix of body shop supply store evercoat undercoating with tar roofing patch from a gallon can FROM LOWES mixed in to thicken it and make it build)


These were some test sprays - I am getting ready to do the wheel arches on a 69 Camaro Pace Car so I will get some better photos.
I use a gun which looks like a textured ceiling sprayer without the hopper.
Less pressure builds better with a closer to factory texture - 25-30# works best for me.
The flatter finer textured spots below are at 50-60#

[Larry M.]

Re: C2 Wheel Well Undercoating...what to use???

Very nice.........

Larry

[James G.]

Re: C2 Wheel Well Undercoating...what to use???

FWIW the consitency prior to spraying is about like oatmeal - it won't quite level itself out.- NOT AS RUNNY AS MOST GRITS~

[Tom E.]

Re: C2 Wheel Well Undercoating...what to use???

James
if I remember correctly I used 40 PSI and did a few spray outs to get the hang of it. Sprayed nicely but you will got some overspray so make sure you bag out areas not desired with plastic or similar.
Tom

[James G.]

Re: C2 Wheel Well Undercoating...what to use???

I bag the entire car and tape the wheel openings off...

[Paul S.]

Re: C2 Wheel Well Undercoating...what to use???

I USE TRUCK BED LINER , DRYS NICE AND YOU CAN EASY CONTROL THE PATTERN AND THICKNESS ( WITH PRACTICE) DOES REQUIRE A SPECIAL GUN , BUT YOU CAN BUY A CHEAP ONE

https://www.amazon.com/Raptor-Uretha...xpY2s9dHJ1ZQ==

[Joseph S.]

Re: C2 Wheel Well Undercoating...what to use???

One more vote for the 3M 8864 product. Used a $10 spray gun (Astro Pneumatic) at 30psi and with a bit of practice can get a good build original looking texture. It can be a mess though.
Joe