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Epoxy primers help

mentor70

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Greetings crew!

So I just had my engine compartment and interior bead blasted yesterday and I need to seal it quickly.

Who's got the good epoxy primer product these days?
 
several good choices, what brands do your local supplier deal with? BASF, Akzo Nobel, PPG, Dupont?

I prefer Southern Polyurethanes, but I have it shipped

Eastwood sells their own brand, very reasonably priced...... I don't hate it, especially for undersides and hood compartments
 
I've used several and some cheap ones. You get what you pay for, but for your purpose you might be able to go with a cheaper version. Ask you local paint house or supplier. Unfortunately, you can expect to spend a fair amount for even a quart of product. Paint and primers have gone crazy in price.
Two cheaper options would be....
PPG Omni will probably be $100/qt
Enduro prime probably $200/gal
 
I have used tons of the eastwood epoxy, it lays down nice but takes forever to flash off. I want to try the SPI stuff on the next project. The eastwood also does not sand well, but has a long recoat window.
 
I have used tons of the eastwood epoxy, it lays down nice but takes forever to flash off. I want to try the SPI stuff on the next project. The eastwood also does not sand well, but has a long recoat window.

I use the SPI epoxy for EVERYTHING......it's the only primer on my bench.
 
SPI coats well .......$$$ and has to be shipped but worth it

20230725_153726 (1).jpg
 
I've used several and some cheap ones. You get what you pay for, but for your purpose you might be able to go with a cheaper version. Ask you local paint house or supplier. Unfortunately, you can expect to spend a fair amount for even a quart of product. Paint and primers have gone crazy in price.
Two cheaper options would be....
PPG Omni will probably be $100/qt
Enduro prime probably $200/gal
You can get Omni for $50/qt
 
the SPI is a 1:1 mix....... 2 sprayable gallons, just under 300 bucks shipped .......... about 36 dollars /qt ........fills great, sands clog free

you can also get a qt and a qt........ for about 110 bucks

comes in black, white, grey, and red oxide
 
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I use the SPI epoxy for EVERYTHING......it's the only primer on my bench.
I will definitely be using it for my next project. I read the TDS for SPI and it gives so much good info. The only reason I used the eastwood is I had to do a phosphoric acid wash on all of my panels and at the time, the SPI TDS did not recommend using their epoxy over acid washed metal. The eastwood/kirker epoxy bonds very good over acid washed metal.
 
I will definitely be using it for my next project. I read the TDS for SPI and it gives so much good info. The only reason I used the eastwood is I had to do a phosphoric acid wash on all of my panels and at the time, the SPI TDS did not recommend using their epoxy over acid washed metal. The eastwood/kirker epoxy bonds very good over acid washed metal.

SPI gets very specific on instructions, maybe even a little overboard; but they want good results, not complaints from people who misuse the product.

their instructions should probably be followed for all epoxy primers...... I've done the ospho prep with both SPI and eastwood with good results
 
I really like the SPI epoxy as well. I am lucky that our local NAPA store stocks it, so no waiting and paying for shipping.
 
I use Kirker...used to pay $50 a gallon not sure of today's price


Just checked...$38 qt $92 gallon
 
I've used SPI on two paint jobs and on two engines and I'll buy it again. Great stuff. Nice coverage, sandible, fills good. The longer it sits mixed the better uv protection. I think you can go a few days and recoat without scuffing.
 
Im using Omni and no complaints yet. Do your research on what you decide to use.

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20230402_155548.jpg
 
SPI epoxy works great for a sealer coat to prep for a vinyl top install too.
 
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