PORS 15 or underbody coating??

manpowermustang · Dec 9, 2004

Im gonna do my underbody now (next 2 weeks) and I have a friend that did his s***** camaro w/ PORS 15. He swears by it. I have my rear diff out and all the other crap in the way out. Any opinions???

ALMOSTFINISHED · Dec 9, 2004

I would say go with your friend, even tho he drives a camaro , por 15 is some crazy stuff, works wonders on metals, even rusted metals. I just finished a pro 15 job on the complete frame and undercarriage of my grandfathers 79 vette, it ahs a very very glossy black finish too. I would personally go with por 15, i have tried my share of spray on undercoating, it works nicely but nothing like por 15 from what i here. goodluck

Nick

89 Saleen#455 · Dec 9, 2004

I used POR-15 to freshen up the wheel wells. THE STUFF IS AMAZING! Very strong and durable. Just be careful not to get it on your ends as it's VERY hard to remove......trust me!

manpowermustang · Dec 9, 2004

How much do you think it takes to do one of these lil onl stangs, lol.

Thanks for the por favoring. I was tinking the same too.

How clean do I need the surface of the under body of the car, there on rust just some crap.

87'GTstang · Dec 9, 2004

First off, where would someone get the stuff?

Second, I have a friend that works on cars in his shop to fix them up in really nice conditions all the time. I was told two nice tips from him. For one, he sandblasts everything including as much of the inside out outside of the frame as possible. Then he takes something similar to what house builders use for insulation (the stuff that is sprayed and then expands) and fills the frame up completely. then he takes the spray-in bedliner stuff and coats the entire underside of the vehicle with it. Anyone think it's a very worth-while way to go about it or is this PORS 15 stuff a better deal? Afterall, the spray-in bedliner stuff is made to be pretty damn durable anyway - any suggestions?

fox racer · Dec 9, 2004

at por15.com they sell kits. it comes with marine clean which degreases (like no other) then metal ready (or sumtin like that, it prepare the metal/rust for paint) then the por 15 im black, flat black, white silver and some other colors. you can even paint over the por 15 any color you want the chassis/ metal to be. be sure to put a wire wheel to the rust before anyhting though

this stuff is better than any other, i swear by it. even if you miss a spot, only the missed spot rusts, it doesnt get under the por15.

manpowermustang · Dec 9, 2004

All I no is the stuff is good. My buddy told me it like 115.00 a gallon. Killer **** too. :worship:

87'GTstang · Dec 9, 2004

manpowermustang said:
All I no is the stuff is good. My buddy told me it like 115.00 a gallon. Killer **** too. :worship:

Yep, I found it. $115 for 4 quarts:
POR 15

green · Dec 9, 2004

what is another name for this pors 15 stuff. is it like rocker panel undercoating or something diffrent.

jerry beach · Dec 9, 2004

They sell a fuel tank liner in a can too. I used that stuff and it came out great. I cleaned the rusty tank with acid and water, then used water and baking soda to nuetralize the acid. This cleaned it really well, there was only a little surface rust left in places. The directions said this was OK. I followed the rest of the directions (2days to cure) and it looked new inside. No more fuel problems, filter is old and clear, looks good. Great stuff. It was $20 a Qt. and silver in color. It said on the can it was designed for the military to be impervious to fuels.

manpowermustang · Dec 9, 2004

I dunno, Ive only heard of it called por 15.

POR-15 Depot · Dec 14, 2004

87'GTstang said:
Yep, I found it. $115 for 4 quarts:
POR 15

The 4 quarts is $115.00
The Gallon is $105.00

The correct Name is POR-15 (Paint Over Rust)

Nice forums ya'll have here..

EMW150 · Dec 14, 2004

Good stuff. I sandblasted my whole undercarriage to bare metal and used POR-15. The stuff is pretty incredible but like someone said above do your best not to get in on your skin because it will not come off. I had a stripe of it on my face which I scrubbed off with thinner and a green scuff pad. Traded the black stripe for a nasty brush burn. Also don't buy by the gallon, buy it in quarts because once you open it, it doesn't last very long.

notchman90 · Dec 14, 2004

i used por20 (a high heat version of por15) on my exhaust and headers. stuff is really nice. paid 20$ for a pint.

88stangnut · Dec 14, 2004

How clean does the frame and the inner fenders have to be to apply this stuff? like jsut sand off teh loose **** and paint? or do i have to get rid of all the rust every spot??

EMW150 · Dec 14, 2004

88stangnut said:
How clean does the frame and the inner fenders have to be to apply this stuff? like jsut sand off teh loose **** and paint? or do i have to get rid of all the rust every spot??

They tell you it gets better adhesion to rusted metal than new metal so I'd say just the loose stuff would be fine. You want to avoid painted surfaces because it will adhere to the paint but the paint may not have a good adhesion to the metal in cases of peeling or rusting beneath the existing paint.

MisterCMK · Dec 14, 2004

I used por-15 on a trans am that I am building with my father, and let me tell you, it is good stuff. I havent had any of the parts rust, and I painted some wheels on an old beater I used to have. It will neer rust again. I would rather spend more money up front to do it right, than have to repair rust, or re-do all of the undercoating.

POR-15 Depot · Dec 14, 2004

Clean the surface with a good water hose and brush to get all the dirt and oils off. This is what the MARINE-CLEAN does, it's a water base cleaner/degreaser. But any good cleaner will work. Let dry and paint. You do NOT need to remove the surface rust. It helps POR-15 bond to the surface. Just remove loose paint and rust, as in flakes. hope that helps.

4montecarlo · Dec 14, 2004

so, is it actually bad to remove all the rust before applying por15 than? what happens to the rust below por15?
thanks
matt

POR-15 Depot · Dec 14, 2004

4montecarlo said:
so, is it actually bad to remove all the rust before applying por15 than? what happens to the rust below por15?
thanks
matt

Well not *bad* just not needed. A slight surface rust will help POR-15 bond to the surface. POR-15 need texture. This is why it has a hard time bonding to new metal. To answer your question, once the rust has formed, it's just rust. The metal is already gone. All it can do is rust more and effect what metal is left. When coated with POR-15, the present rust bets mixed with the POR-15 and become part of the coating. The POR-15 them soaks to the metal surface and bonds to the metal as it seals it. So it stops more rust from forming past what is already there.

Now if your wanting to remove what rust is there now, this is what METAL-READY does. It converts the present rust to zinc and etches the surface to give POR-15 the texture it needs.

PORS 15 or underbody coating??

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