POR-15 prep

[MrBClark]

So I am finally getting ready to prep the frame on my 60th Anniversary Wrangler. It has been a PITA since all I have is a hammer, screwdriver, and sandpaper. My friend is going to help me prep it more with a grinder and wire brush. I was just wondering is anyone has any suggestions on how to remove the factory coating in areas? The PO sprayed some cheap crap over the factory cheap crap and its horrid to get off in areas. Any help? I have been pounding my frame in the usual weak spots and everything is extremely solid so I am happy. I will show pic of where I am at. The pic makes it look horrible but it's actually pretty clean.

 

[Sundowner]

So I am finally getting ready to prep the frame on my 60th Anniversary Wrangler. It has been a PITA since all I have is a hammer, screwdriver, and sandpaper. My friend is going to help me prep it more with a grinder and wire brush. I was just wondering is anyone has any suggestions on how to remove the factory coating in areas? The PO sprayed some cheap crap over the factory cheap crap and its horrid to get off in areas. Any help? I have been pounding my frame in the usual weak spots and everything is extremely solid so I am happy. I will show pic of where I am at. The pic makes it look horrible but it's actually pretty clean.

The factory cheap crap isn't cheap, or crap; it's actually a very nice paint and it holds up well unless it's totally degraded by age, damage, and/or salt. If it was mine, I would remove the loose stuff and scuff the remainder, and then give everything a nice bath before applying the new finish; POR should stick to it nicely.

 

[MrBClark]

The factory cheap crap isn't cheap, or crap; it's actually a very nice paint and it holds up well unless it's totally degraded by age, damage, and/or salt. If it was mine, I would remove the loose stuff and scuff the remainder, and then give everything a nice bath before applying the new finish; POR should stick to it nicely.

Thx that actually helps a lot. I hate rust

 

[Chris]

Get all the rust as gone as you can with wire wheels and anything else. Then I like to apply the POR15 process which is their cleaner / solvent, followed by primer, then the POR15 itself.

 

[MrBClark]

Get all the rust as gone as you can with wire wheels and anything else. Then I like to apply the POR15 process which is their cleaner / solvent, followed by primer, then the POR15 itself.

Yep I bought all that stuff. How does this area I showed look?

 

[Chris]

Yep I bought all that stuff. How does this area I showed look?

That area looks like you have a LOT of prep work to do

Fortunately it does appear to be surface rust and not frame rot from what I can tell. It's just really bad surface rust.

 

[Sundowner]

I haven't had an issue with POR adhesion over surface rust, providing that you 1) get rid of everything that's loose, and 2) bathe the area in their primer/cleaner/mystery-fluid before starting. The worst problems I've had were all due to oil contaminating the surfaces I was working on, and one time where I didn't give the rusted surfaces a good wire-brushing. Keep in mind, however, that I'm not a paint guy...so I may well be as wrong about this as I am everything else. That said, I'm with Chris: if you can get it cleaner without killing yourself, then do so. It's certainly not going to hurt.

What's the plan for the top of the frame rails?

 

[toximus]

At the very least, buy yourself a die grinder and wire knot brush.

https://www.amazon.com/gp/product/B00FDLB9O2/?tag=wranglerorg-20

https://www.amazon.com/gp/product/B00004YMDG/?tag=wranglerorg-20

 

[astjp2]

Hot pressure washer, I mean hot, not warm. Bathe with soap from a bug sprayer, then spray with the hottest water you can use...like 140 degree or hotter to get the oil and rust flakes.

 

[astjp2]

At the very least, buy yourself a die grinder and wire knot brush.

https://www.amazon.com/gp/product/B00FDLB9O2/?tag=wranglerorg-20

https://www.amazon.com/gp/product/B00004YMDG/?tag=wranglerorg-20

and wear good safety goggles and a face shield, those wires are not fun when the wife digs them from your face and arms.

 

[toximus]

As somebody who has undertaken this process, I can attest to it being a pain if you do all of the steps. A year after doing it I ended up calling my frame a loss because it was close to rusting from the inside out.

Yours may be fine, but check it and have a plan to protect it.

 

[toximus]

and wear good safety goggles and a face shield, those wires are not fun when the wife digs them from your face and arms.

Absolutely! You should be covered from head to toe!

 

[toximus]

Hot pressure washer, I mean hot, not warm. Bathe with soap from a bug sprayer, then spray with the hottest water you can use...like 140 degree or hotter to get the oil and rust flakes.

What do you have for a hot pressure washer and do you like it?

 

[Juggernaut]

I don't know if you have access to a compressor but I used a needle scaler and it made really short work of the factory paint and any rust. It came out super clean. If you not familiar with it, there , its worth looking up. Bought it from Eastwood but I think you can pick one up at Harbor Freight.

 

[LukesfirstJeep]

I used a 4" grinder with wire wheel attachment and a 40 grit flap wheel on the large flat areas. For the nooks and cranny's, I used a spot sandblaster from Harbor Freight.

If your going through the effort, I recommend dropping the gas tank/skid and clean up the frame cross members that aren't accessible otherwise.

 

[astjp2]

I bought a Hydroblaster ssov, its nice. I paid $150 for it, the heating coil was broke, that was $1100 to replace, the diesel tank was leaking, that was $150, I put a new diesel heater nozzle, hoses and spray nozzle. That and a few miscellaneous parts I have a $7500 pressure washer!

It will make steam if I dont purge the hose. It's only 2500 psi, the heat is what makes it work so good.

 

[MrBClark]

I haven't had an issue with POR adhesion over surface rust, providing that you 1) get rid of everything that's loose, and 2) bathe the area in their primer/cleaner/mystery-fluid before starting. The worst problems I've had were all due to oil contaminating the surfaces I was working on, and one time where I didn't give the rusted surfaces a good wire-brushing. Keep in mind, however, that I'm not a paint guy...so I may well be as wrong about this as I am everything else. That said, I'm with Chris: if you can get it cleaner without killing yourself, then do so. It's certainly not going to hurt.

What's the plan for the top of the frame rails?

The top seems hard to reach. I was just gonna remove what I can and sand it pretty good. Any other suggestions?

 

[MrBClark]

I bought a Hydroblaster ssov, its nice. I paid $150 for it, the heating coil was broke, that was $1100 to replace, the diesel tank was leaking, that was $150, I put a new diesel heater nozzle, hoses and spray nozzle. That and a few miscellaneous parts I have a $7500 pressure washer!

It will make steam if I dont purge the hose. It's only 2500 psi, the heat is what makes it work so good.

View attachment 98097

K thx for the advice. I do not own a pressure washer but luckily am borrowing one at the moment

 

[taylormade73]

This looks like a rust hole to me...

 

[MrBClark]

This looks like a rust hole to me...View attachment 98132

It's not