Por 15 Paint Questions

[skokie]

I have a cast iron intake manifold that I want to paint. Intake has already been bead blasted and primed. I got the por-15 engine kit. I am thinking that I can skip the clean and prime pieces and go straight to the paint. Has anyone ever used this before?

Thanks

[Gee_Emm]

I have used the Por-15 orange on my intake and the factory gray manifold paint on my exhaust. I have never heard of the primer before, I would suggest using the metal ready product they make, it will give the paint a proper surface to stick to. Its not as imporant on something like an engine but if you were to use the regular por-15 paint on something like a frame then metal ready is a must.

[skokie]

Gee-Emm,
Nice work there. I will use the metal ready on the intake. I will be doing the work tomorrow in the morning.

Thanks

[Gee_Emm]

Thanks, I am actually in the process of redoing it, I wasnt happy with the crappy looking galazined spray painted pieces so I am zinc plating them.

You are working with bare metal right?

[skokie]

Cast iron intake that was bead blasted and primed.

[Gee_Emm]

You have to put the paint onto bare metal.


http://www.por15canada.com/can/faqs/faqhtpc.html

[skokie]

Ok sounds like I need to put the grey primer stuff on it and then slap on the enamel.

[Gee_Emm]

I didnt use the kit, I just bought a can of Chevy orange and put that on to my bare metal intake. It sounds like the kit comes with regular por15 you put on then you put your color on that. I guess the kit is different for some reason, I read the can of chevy orange I have and it says to put it on bare metal.

[Fred T]

Just to make sure you're on the right track. You have bead-blasted the intake. Per the instructions for POR-15, glass media doesn't give the surface enough tooth for proper adhesion. So you do need to use the metal ready. I would also do a complete wash on the manifold, inside and out, (before the metal ready) to be sure all of the glass beads are gone. They will damage your valves and cylinder walls.

Next is application of the POR-15. It's not really considered a primer since it can be used as a final coat. Follow the instructions. I assume you're brushing it on. Wear glove of some sort, if it dries on your skin it won't come off. Real similar to what's in super glue. Also, apply two coats of the POR-15 to ensure complete coverage.

After that you apply the engine enamel. The stuff is thick, but goes on great and leaves no brush marks, as long as you don't leave any brush hair in the paint.

[skokie]

Fred.
Intake has been blasted out so there are no beads floating around in there. I am going to get the metal ready going tonight and get her painted in the morning. Btw I do have some gloves to wear. Already went through the super glue bit last week

[4x4Poet]

I'm still confused. No surprise?

Skokie, exactly what do you mean when you say the intake is "primed?"

[skokie]

Originally Posted by 4x4Poet

I'm still confused. No surprise?

Skokie, exactly what do you mean when you say the intake is "primed?"

When the machine shop bead blasted it they sprayed it with primer.
Here is a pic. Ignore the head shield.

[4x4Poet]

Then POR15 will only stick as well as it sticks to that particular primer. And the combo will only stick as well as the primer sticks. You might talk to a POR15 rep about how well POR15 sticks to most primers. If you didn't ask for the primer application, I'd guess that the machine shop primered your intake to encapsulate whatever beads were not cleaned out by their washing or hot tank to keep them from being liable for your engine had leftover bead/sand particles worked their way into the cylinders.

[skokie]

I think what I will do is call the machine shop and see what primer they used and then call por 15 and see what the best course of action would be. I want this to come out right so I can wait a bit.

[super72bb]

I used the POR 15 kit and here is what I did. I spent countless hours cleaning and scotchbrighting the engine, Used the marine clean, then I used the metal ready and put on the POR 15 Base. I then put on a coat of the engine "Chev Orange" that comes in the kit. However, it all depends what you are going for in the end. If you want to make a full on show truck I suggest spraying it on. The stuff flows out very well for brushing it on, but I found it was impossible to get the Tin parts perfectly smooth (oil pan timing cover) ect. So after the first coat of brushing the orange on I wet sanded it and decided to spray the engine instead. If you are just doing a nice driver and are not in the postion to spray I strongly suggest a warm environment when painting/brushing. Another tip is keep the paint in a warm place just prior to putting it on. I have used the Por products alot and what I always did before brushing them on was put the can in a couple inches of hot water to get the temp. of the paint up. This seemed to help the brush marks fade away fast and make it easy to apply.

I know I had lots of questions before painting with the POR so be sure to ask if I can help with anything else

Curt

[super72bb]

What I suggest for painting the manifold is hit it with a Scotch bright pad. Give the por some "tooth" to adhear to. I wouldn't say it was imparative to use the metal ready over the primer unless you have removed the primer and bare metal is showing.

I dealt with this very thing and that is what the POR rep recommended.

Curt

[skokie]

Curt
Looks like you saved me some phone calls. I think I have some of those scorch bright pads here in the kitchen. I will give this a go in the morning. I will post back once I am done and have some pics to show.

[4x4Poet]

Super72bb, that's some gorgeous engine & chassis work. Fantastic attention to detail.

[Erl]

What did you thin the POR15 with to spray, and what ratio?
Erl