jeffp1167

I just bought like 3 or 4 spray cans of this stuff. Will this be enough to do F & R bumpers on a 90? Any tips on getting these bumpers stripped and the stripper neutralized would be great. As well as what flexible primer to paint with till car is painted?

Here is what my bumpers are like.



I know it looks decent but some paint has peeled down to the original black primer and also some paint has spiderweb like cracks so figured best to strip and re-prime.

DUB

MAN OH MAN !!! You are getting into a "hornets nest". This stripper may work..and then it may not. Once you break down to the raw urethane...you have to be super careful on what you allow to get on it. ANY solvent are BAD NEWS...causes the urethane to swell...and this stripper may do this also. So my best bit of advice is to CAREFULLY spray the stripper into a container...and using a "Q-tip"...apply a small dab on a "hidden from view" section of the bumper as see how many applications it will take to remove the paint. YOU may be surprised...and find that using a media blaster would be best. I ...personally/professionally WILL NOT use that stuff. It takes more time to "correct" what it does to the bumper than if I did not use it....and used another method of removing the paint.

"DUB"

jeffp1167

Well, they claim it only removes down to the black factory primer. I have a 90 rear cover I can experiment with.

DUB

I would experiment with it first....because I can not grasp how they can control the effectiveness of the stripper and guarantee that it will only remove the clear and basecoat...and not touch the factory primer.

I wish you the best... because this is a messy/nasty job you are about to undertake. BEEN THERE...DONE THAT!!!
"DUB"

mark79,80

I have not used that product but used a similar product made by Bull Dog.
This was on a 1979 and 80 Corvette. The urethane is probably
different on your car, but on the 79 and 80 it caused the bumpers
to permanently swell a bit. The front bumper on the 1980 was
distorted to the point that I replaced it.
The stripper worked well on old lacquar but would not remove
newer 2 K primer.

I now use a combination of a DA and hand sanding to remove
paint on urethane bumpers.

chrislyn

Take your bumper covers off and send them to Keystone .they have a paint removing process for urethane bumpers. they will come back primed and ready to paint with no headaches. Wes

jeffp1167

I think by the time shipping cleaned your wallet out and then the labor charge ... Might be cheaper just to buy new ones.

chrislyn

You have (2) Keystone facilities near you. They would probably pick them up from you. (1) San Diego 800-995-7550 (2) Santa Fe Springs. Give them a call,what do you have to loose. I can tell you I use there service for stripping bumpers. If you weigh the cost of materials and the time and the problems that could happen ? Good luck, Wes

jeffp1167

Well, the stripper arrived today so I will probably test this weekend on the original 90 rear bumper cover I have and see how it does before trying it on the bumpers on the car.

jeffp1167

Seems to work pretty well with no side effects. Bumper originally appears to be red and the stripper does an excellent job at taking it down to the base red and then an easy task to sand the base red off to get to the original black primer.

I haven't tried it on the front bumper yet.

jeffp1167

This is how far the stripper will take the paint down. Not sure why it won't strip the original basecoat though but whats left to get to the black primer requires just a quik sanding with 220grit.

Black04Z06

I not a fan of chemical stripping. Too many things to go wrong as mentioned. I hope it works for you.

I would Soda blast it. I've had VERY good experiences with soda

DUB

when it is in regards to urethane bumpers only..and done by someone who knows how to do it. because if it is done incorrectly...the soda can actually eat into the urethane and cause for some additional prep/repair procedures.

Chemical stripper on urethane can create more problems than it is worth...in my opinion.
"DUB"