Need help stripping frame undercoating

Are you gonna go down to the metal?

 

I used stripper, aircraft stripper, and then a wire brush to get tough spots when I took all the crap undercoating off the suspension pieces on my Dino. They had sprayed it EVERYWHERE!! Worked well, made a mess. Work outside put down a sheet of plywood and then a tarp over top before you start to catch anything that drips off.

For small stuff, maybe a metal bucket with stripper, and dip, then strip,

D

 

If you are talking about the Dinotrol or Cosomoline that is there to protect the frame from corrosion. Yes it is messy and gets soft over time. I found the WD40 works very well to remove it. No need for aggressive paint stripper. Just know what you will use to replace it after you remove it all. Wurth stone guard is a good product to keep the original look if that is important to you.

 

WD40 works pretty fast. I used paper towels and a plastic, no metal, putty knife where it's caked on. As you work it you'll create a flow.

 

From my limited experience with the stuff I've noticed that it pretty much dissolves when gas gets on it so if a mild petroleum based product like WD-40 works then that would be the way to go. I wouldn't use a wire wheel or strip the paint off the frame unless you find rust under it. If your car has always been in California that's going to be unlikely. The factory coating (under the goop) should still be good so what you are really after is cosmetic in nature, you just want it to look good. If you're not restoring corroded metal no need to be aggressive.

 

Avoid power washing, can cause all sorts of issues. Like any good paint prep a light degreasing like diluted Dawn soap, let dry then wipe down with denatured alcohol

 

I'm wondering why you want to of this? The Dinitrol is the original coating & I suspect that as you strip it off you'll be amazed at what good shape the metal is in - in other words it has done its job brilliantly.That being the case, why change it?

I'd leave well alone, buy some more & top it up where needed with a brush.

 

The judge will deduct points if you don't have the original dinitrol or preservatives.

 

The way they applied the brown Dinitrol was a real mess, all over everything including rack boots, shocks, wiring, hoses, etc.

Removing it exposes the original factory black epoxy coating (at least on 328) which looks much better and is fine for rust protection.

I tried various methods but in the end, brushing with white spirit, leave 15 mins, wire brush to score the surface, apply more white spirit, repeat until its gone. Also WD40 does work for removing it from hoses etc. The key is you have to wait for whatever you use to work for a while after applying it.

The white spirit does not affect the black epoxy coat.

I can confirm from experience that concours do not deduct for not having this brown muck.

 

I know Rob, I was just teasing you, but I agree 100%, You as the owner of your own car is the best judge to please if you ask me.