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Discussion Starter #1
I finally got to work on changing the headgaskets yesterday, and got the drivers side head off, and there was no coolant in any of the cylinders, which I believe is a good thing. I looked at the gasket when I took it off and there were no tears or anything, so I guess the bad one is on the passenger side.Although I did notice alot of light tan "foamy" stuff on the inside of the valve cover. Is that normal?

Okay, now for the real reason for this post. What should I use to clean the remnants of the head gasket off the block? Should I sand it off, scrape it off or what? I'm cleaning everthing I take off so maybe it will look alittle better when its done, and so it won't smell like a junk yard car when it gets hot. I also would like to paint the valve covers, so has anyone done this with success? If so what paint & primer should I use.
I also would like to know what I should do to clean out the motor when its done. I want to clean out the oil passages and the cooling system the best that is possible, without removing the motor and such. I'm going to (hopefully) finish the head gasket replacement tomorrow so I can get the SC out of my install bay before work Monday.
I also want to replace ALL the vacuum hoses, well, all hoses really. Does anyone know the usual sizes of the vacuum lines, and rubber lines so I can go buy some sections when I buy the other gaskets I need and degreasers at the autoparts store.
 

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Motorboatin' SOB, Headlight Cleaning Guru
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6,910 Posts
i have seen two 3.8 mn12s that blew a HG on the #3 cylinder (back passenger side). the tan foamy stuff sounds like coolant and oil mixed together, but it seems weird that it would be inside the valve cover.

i would scrape the HG remains off the block. i think you could use a damp scotch brite pad to clean it up also.

as for the valve covers, does this answer your question? :)



i used high temp paint and model paint for the ford logo. i had the covers bead blasted to remove the old black paint, then scrubbed them with wet scotch brite pads. then i painted them, then sprayed on two coats of clear spray paint.
 

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Moderator, Iowa Chapter Director, Uber Luber, TCCo
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8,978 Posts
that white frothy stuff inside the valve covers is just oil. I see it a lot on oil fill caps when changing oil at work, and it seems to be caused by a bad PCV valve. If the vapors cant escape, they'll just build up at the highest point of the motor (valve covers, oil fill cap).

I forget what is it, maybe its acetone or mineral spirits, but there's some kind of cleaner that takes hg's off pretty good with a cloth. I just went over it VERY carefully with a razor blade and finger nail, making sure not to remove any metal, or scratch the deck of the block.

For cleaning out the motor internals, you could put some Seafoam in the oil to clean everything out. Or for a deep clean, put in tranny fluid in one of two ways:

1. add 4.5 quarts of tranny fluid to an empty oil pan, turn car on and leave it in park, do not drive it. Wait for car to warm up to operating temperature, and shut off. Replace tranny fluid with oil, drive for 50 miles, and change oil again.

2. add 1 quart of tranny fluid and add oil to fill the rest of the pan up, drive for 50-70 miles, change oil.

Tranny fluid is an oil and a detergent, it cleans out a block really good, but you dont want to keep it in there, since its designed for a tranny and not a motor ;)

-Thomas
 

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Moderator, Iowa Chapter Director, Uber Luber, TCCo
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****ty pic, but you can get your valve covers powder coated for around 70-90 dollars and it looks awesome, holds strong, and is very durable and heat resistant. Mine are Candy Blue.



-Thomas
 

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Chief of Warranty Police
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I just spraypainted my valve covers black. :D

I wanted to do something neat to them, but then I remembered you can't bloody see them on an SC motor anyway.. :rolleyes:
 

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Discussion Starter #6
good point....can't see them any way. But I think I'll clean them up some for s & g's (****s and giggles) :xpwink:
 

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Moderator, Iowa Chapter Director, Uber Luber, TCCo
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so is this being done on a supercoupe motor?

The valve covers are hard to see under the motor I know, but trust me, if they're bright, they will be noticed on an sc. I've seen a few different sc's with painted/PC'd covers and it looks gooood.

-Thomas
 

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Full Metal
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i used a gasket scraper for the big chunks and a medium stiff wire brush attachment on my drill to take all the graphite/ lead gasket crap off of the block, and used diesel for the the valve covers, the heads were milled so i didn't have to worry about the gasket leftovers on them, lol, hth, later'z.....:D
 

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i just used an old wood chisel i had laying around to get rid of the old headgaskets. im really not to worried about scratching a cast iron block.
 

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Discussion Starter #10
everything would most likely be done by now but I had to spend most of the day trying to remove a rounded off head bolt. I hope that frigging bolt is really lonely now, its the only one left in the head. I gave up and went home. I'll kick its little arse tomorrow.
 
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