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Old 05-02-2005, 09:55 PM
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Omni for engine paint?

hello how do you all fell about painting a motor with PPGs Omni AU??

I want to paint the heads and block. I don't want to go really cheap but as I am kind of new to the painting scene I don't want to spend allot. I am trying to paint it for around $100 if possible

do I need primer?

should I go BC CC?

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Old 05-03-2005, 04:40 AM
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I would use a single stage catalyzed urethane, like PPG Concept. Not familiar with Omni paint lines, so it may be comporable to Concept. Yes it is advisable to use a primer. Southern Polyurethane epoxy comes to mind. I would not use a clear coat, unless you are going to show the car and trailer it everywhere.

Vince
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Old 05-03-2005, 05:38 AM
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The Omni single stage urethane will work just fine for your engine paint, ask for a pint of MTK in the color of your choice. Put down two medium wet coats of epoxy primer first- a day or two before paint would be best. Bob
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Old 05-03-2005, 05:47 AM
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Quote:
Originally Posted by baddbob
The Omni single stage urethane will work just fine for your engine paint, ask for a pint of MTK in the color of your choice. Put down two medium wet coats of epoxy primer first- a day or two before paint would be best. Bob

What does a gallon of Omni ss go for?? just curious thanks Ed
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Old 05-03-2005, 06:46 AM
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Omni single stage is cheap, most of the pints seem to run about $12 quarts around $20, gallons $50-$80 I think. I do get a good discount though from my PPG supplier. You can also mix in 50% urethane clear (the clear must use the same hardener for compatability) on the last coats for more depth, durability, and buffability-is that a word? Omni MTK will never compare to the Concept and Global lines but is much better than say an acrylic enamel. Bob
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Old 05-03-2005, 04:54 PM
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Quote:
Originally Posted by baddbob
Omni single stage is cheap, most of the pints seem to run about $12 quarts around $20, gallons $50-$80 I think. I do get a good discount though from my PPG supplier. You can also mix in 50% urethane clear (the clear must use the same hardener for compatability) on the last coats for more depth, durability, and buffability-is that a word? Omni MTK will never compare to the Concept and Global lines but is much better than say an acrylic enamel. Bob
Thanks that is what I was asking I didn't get such a good deal on a gallon of color matched paint and hardener for $145.00 I will check on the clear to mix, might as well as I have gone this far. Thanks Ed
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Old 05-03-2005, 08:21 PM
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I hear that you can mix the MTK 50:50 with clear

Why would you want to do that?

would it last longer? is that somthing i should think about doing? I think i have 1/2 pint of clear

do you know a good web site with color chips i can look through?

thanks
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Old 05-03-2005, 09:05 PM
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Go to your paint supplier and ask to look at a few color chip books. Not all colors can be mixed in Omni. And color match is usually a problem but the stuff works alright otherwise. Adding clear to the last two coats will give it more durability. I think there are two or three compatible clears in the Omni line. I've used MC260 clear mixed with MTK on numerous suspension and drivetrain parts with no regrets- looks nice and wet and holds up just fine. Mix your paint then mix your clear and combine the two. Put two coats of straight color on first to get coverage. Mix ratio on the paint is 4Paint+1Hardener+1Reducer and 2Clear+1Hardener for the clear. You can skip the reducer on the paint if you have a good gun and the gloss will be a bit better. Bob
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Old 05-03-2005, 11:36 PM
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What is the difference between acrylic enamels and urethanes?
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Old 05-03-2005, 11:44 PM
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also what is SELF-ETCHING PRIMER
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Old 05-04-2005, 05:46 PM
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you have said to use a epoxy primer. Is that just a stronger primer? is it more expensive?
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