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Old 06-12-2005, 08:02 PM   #1
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Painting engine block...

Do you have to buy a special primer to coat before spraying the engine block or does the paint have some kind of rust resitant in it already to prevent rust from eating through the paint.
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Old 06-12-2005, 08:07 PM   #2
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Just get some engine enamel and spray it, no primer needed. Mine still looks just as good as it did when I painted it after a year of daily driving. Just be sure to do a really good job of taping everything up or you'll have to hone out the cylinder walls again.
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Old 06-12-2005, 08:09 PM   #3
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I have painted hundreds. When you get the engine back from the machine shop it will have been vatted and be ready for painting. Just get some engine color of your choice and paint it on the engine stand.

I am puzzled why you have not asked about this before. I would go with a aluminum or dark green color to offset the valve covers
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Old 06-12-2005, 08:23 PM   #4
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take your time and do a few light coats and let dry fully then have at it, no mystery
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Old 06-12-2005, 08:32 PM   #5
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no need to do light coats. It's not like you're really going to see the engine block that well. I painted mine ford blue and I can see it very little.
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Old 06-12-2005, 08:40 PM   #6
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But while it is on the stand it will look bad ***
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Old 06-12-2005, 08:56 PM   #7
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Like any paint job the prep is the key.

If there is rust on the block when you paint it then it will come thru the paint eventually.

If there is oil or other contaminates on the block it will affect the paint.

For years and dozens of engines I never used a primer, till my last engine. I used Rustoleum's oily machinery primer and for the color coat I merely find a color I like at Lowe's and paint it with that, no it's not an engine enamel. This is the best paint job I have ever had. Both in appearance and durability.

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Old 06-12-2005, 09:46 PM   #8
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Quote:
Originally Posted by Ponycarman
Like any paint job the prep is the key.

If there is rust on the block when you paint it then it will come thru the paint eventually.

If there is oil or other contaminates on the block it will affect the paint.

For years and dozens of engines I never used a primer, till my last engine. I used Rustoleum's oily machinery primer and for the color coat I merely find a color I like at Lowe's and paint it with that, no it's not an engine enamel. This is the best paint job I have ever had. Both in appearance and durability.

Steve
It is being vatted so there will be a clean block and like everyone said light coats and allow to dry for a a few hours between coats. The fatal mistake in painting is not allowing each coat to properly dry. so when you you spray thwe next coat to soon it disbonds from the block cause it never fyully drys and it will peel.
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Old 06-13-2005, 07:24 AM   #9
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paint it plaid

:pnoid:
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Old 06-13-2005, 11:07 AM   #10
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Quote:
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I have painted hundreds.
Jets engines dont count Corey
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Old 06-13-2005, 12:10 PM   #11
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Quote:
Originally Posted by Rellik
Jets engines dont count Corey
Dude you cannot paint turbine engines and why would you paint titanium, aluminum alloy

Oh I forgot a racers trick. Paint the lifter valley to expedite the oils return to the crankcase
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Old 06-13-2005, 01:03 PM   #12
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eastwood sells a kit for ur engine with plugs that just screw in where everything else would so you dont have to take forever in taping it off. might wanna check into that aswell.
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Old 06-14-2005, 08:39 PM   #13
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I was curious about something too. I want to paint my 302 and i've seen people sand the whole block (duh) but they also bondo. Wouldnt the bondo heat up and crack?
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Old 06-14-2005, 09:22 PM   #14
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Quote:
Originally Posted by Danger Dude
It is being vatted so there will be a clean block

Don't know too many vat jobs that take off rust anymore. Used to be they did but the good old EPA f'ed that up.

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Old 06-14-2005, 09:23 PM   #15
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Quote:
Originally Posted by Danger Dude
Oh I forgot a racers trick. Paint the lifter valley to expedite the oils return to the crankcase
Don't use just any old paint, it'll flake off inthe hot oil and f up your oil pump.

Glyptol or rustoleum oil machinery paint is th eticket for that.

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Old 06-14-2005, 10:02 PM   #16
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Quote:
Originally Posted by Smokedya95stang
I was curious about something too. I want to paint my 302 and i've seen people sand the whole block (duh) but they also bondo. Wouldnt the bondo heat up and crack?
Yes the bondo will eventually crack and fall off.
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Old 06-14-2005, 10:45 PM   #17
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Quote:
Originally Posted by Ponycarman
Don't use just any old paint, it'll flake off inthe hot oil and f up your oil pump.

Glyptol or rustoleum oil machinery paint is th eticket for that.

Steve
No I only used green Rustoleum machinery paint. Been doing it for 20 +years and never once found any paint in the oil filter or inside the engine
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Old 06-14-2005, 10:46 PM   #18
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Quote:
Originally Posted by 97Stallion
Yes the bondo will eventually crack and fall off.


Were they using Bondo or JB weld. JB weld will not crack off and I have seen it used before but that is really anal for something that really wont be seen
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Old 06-15-2005, 09:26 AM   #19
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I use VHT high temp self etching primer and VHT Engine enamel. Glyptol in the valey and in the timing area.


Works well methinks.
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Old 06-15-2005, 09:29 AM   #20
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Damn I did forget to mention the timing chain area!!!
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Old 06-15-2005, 07:45 PM   #21
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Quote:
Originally Posted by Danger Dude
Were they using Bondo or JB weld. JB weld will not crack off and I have seen it used before but that is really anal for something that really wont be seen

They def sanded on bondo. lol
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Old 03-19-2010, 01:18 PM   #22
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Re: Painting engine block...

how many coats should it normally take? (googled painting engine blocks and ME came up lol)
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Old 03-20-2010, 09:52 PM   #23
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Re: Painting engine block...

Wow... way to bring back a 5 year old thread
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Old 03-20-2010, 10:26 PM   #24
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Re: Painting engine block...

LOL dang bro it really is 5 years old lol...i bet NO ONE noticed that...if u would have said anything i would have thrown my 2 cents in......welll screw it im gonna do it anyway...prep and degrease it in FINE DETAIL....I CANT STRESS HOW MUCH DETAIL then go POWDER COAT IT....im pretty sure you have completed this project by now or your worse than i am lol! God bless brotha
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Old 03-22-2010, 08:32 AM   #25
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Re: Painting engine block...

thread closed, make a NEW thread dont bring back super old threads... there is even a check box that says "are you sure you want to bring back a super old thread" or something similar....
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