How to Paint

[David13]

How to paint, or actually prepare new rear transmission cross-member with POR15 paint.

It's not rusty. It's new.

But it does come painted, or what may be anodized.

A sort of cheap paint that looks like it will flake off and rust here and there, quite easily.

So my question is, just paint it with the POR15, or grind all that paint off down to bare metal and then put the POR15 on?

This is my great issue today. And I can't even get to this til I get the front bumper cover on my car so I can drive it it to the junkyard to get a hood for it.

Then I can get back to working on the Jeep. Transmission fluid and filter, new cross member, intermittent tire low fault (tire not low), passenger door lock works manual only, only have one key and it doesn't fit driver's door key lock.

Thanks for your ideas.
dc

 

[turblediesel]

If you take it to bare metal you'll need to etch the metal with phosphoric acid for the paint to bond. Needs to sit 24 hours before painting.

I'd just scuff up whatever paint's on there and paint it.

 

[LibertyTC]

Read the directions carefully about the Por-15.
It wont dry easily in cool temps.
"Recommended Temperature Application: 45°F - 95°f Drying Time: Varies according to humidity; average is 4.5 hours."

Rubberized quick dry undercoating may be another option.
Bed-liner is also good stuff.
Know you dry times of products before you start.

 

[Aceofspades]

Oil spray.... http://www.carwell.com/

But yea por15 I believe still needs to be top coated with paint for best results

https://www.por15.com/POR-15-Technical-Information_ep_62.html

 

[tommudd]

Scuff it up,
primer with two threes coats drying in between good,
then hammer tone paint with two three coats
After install any where bolts went through throw some paint over them

Wax it , then remove every 3-4 months, wax it and reinstall
Will last until rest of the Jeep is long gone

 

[David13]

I'm just going to scuff it a bit and paint it.

It looks like it always must be at least 2 or 3 coats as the stuff is so runny and watery.

On the rest of it, I'll just brush it and paint over the rusty spots.

For 12-13 years old, the rust is not bad at all. Just surface stuff.

I've also got a small can of the heat resistance stuff for the transmission pan.

I'll just simplify the process a bit.

Thanks for the replies.
dc

 

[Bikeflyer]

For saying supposedly less curing in cold weather, I've loved POR for my snow blower housings and rotors. Even recoated the rotors between storm shifts and had it fully hard. Tried scuffing with 120 grit and couldn't take the dirt nibs off.