Herculiner

I know a few of you have done the undercoating has anyone used herculiner and have a review of it? Also how rough does the metal need to be before applying it?

I would always use bedliner in lieu of under coating. We've used a couple different types, but have good pricing on U-Pol Raptor from our local paint shop. The surface does not have to be rough. We clean it thoroughly, a light sand, a seal coat, then put the bedliner material over that.

Properly applied, it sticks VERY well and provides surprisingly good sound dampening particularly for higher frequency sounds.

angela

What is the name of the seal coat you use.

I love the Herculiner.

Hard as nails, easy to apply, and cheap. Roll it on or paint with a brush.

I use it all over, on the pan, under the fenders, in the wheel wells.

Jeff did you just go straight to the metal or did you use a sealer also? How much scuffing of the surface did you do?

I did not use a sealer. I went over the coated pans. I just scuffed them enough to get the shine off of them. You can use a stiff scotchbrite. I also treat any surface rust on the chassis with a rust coverter spray.

Here is my thought....the tunnel lasted 40 years with nothing. With me converting all the rust and then coating everything with this stuff should make it last at least that long.

So what happens in 40 years? I don't care! I will be long gone.

I noticed on my cmc some of the tubes have rust inside them (all surface rust). I was going to have them welded shut but is there a product that could be used to spray inside to help with the rust?

http://www.permatex.com/products/automotive/specialized_maintenance_repair/body_interior_trim/auto_Permatex_Rust_Treatment.htm

http://www.eastwood.com/internal-frame-coating-w-spray-nozzle.html

I've used this on my chassis. The 2ft nozzle it comes with helps it cover the entire inside evenly. Even if your only access is no bigger than a bolt hole.

How much Herculiner did it take and how many cans of that Eastwood did you use?

Also would you use herculiner on the back side of the fiberglass?

A gallon kit will be more than enough.

I always coat the back of the glass. Helps prevent those little stars from flying debris. Some people say don't in case you have to make future repairs. I personally don't agree.

I used 2 cans of the frame coating for my chassis (tunnel, frame horns, napoleon hat, frame head, rear torsion tube). If you do that plus your body subframe, you'd probably want 3 or 4 cans since you will burn through them quicker than you think. Also, it's thin and will run and drip out of any hole it can find. A tarp and some rags are a good idea.