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Cylinder Head & Short Block: 4G63 cams, valvetrain, pistons, rods, stroker kits, 6-bolt swaps, hybrids, etc. Read this Forum's Strict Guidelines.

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Old 06-03-2004, 07:18 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #1 (permalink)
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Valve, and valve seat cleaning.


Ok, I'm replacing my valve seals right now, and the head is off the block.

I wanted to clean up the valves and the valve seats a little, they aren't to bad, but they are dirty.

What do you guys suggest doing? I don't really want to take it into a shop right now as I am low on $ because I lost my job.

Any help would be appreciated.

Thanks

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Old 06-03-2004, 08:03 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #2 (permalink)
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I would just dip them in pats cleaner for a couple of hrs., you can get it at just about any auto parts store, should be around $20, then wipe them down and possibly take and buff them with a dremel tool or drill just use a low speed.


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Old 12-07-2010, 01:27 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #3 (permalink)
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sorry to bring back an old thread but didn't think i should start a new one. I have a new head that has a lot of carbon build up on the valve that I want to get rid of. I don't want to take the head apart so any body got any other ideas? what I was planning on doing is getting some seafoam making sure the valves are closed and just pouring it in the combustion chamber and letting it soak then taking some sort of brush (maybe on my dremel) and taking the rest of that way.

does that sound like a good plan or does anyone have a better way to go about it.

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Old 12-07-2010, 01:36 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #4 (permalink)
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Oven cleaner... not joking. I put them on a peice of wood, spray them down with oven cleaner and let them sit over night. I then use a angle die grinder with a scotch brite pad bit and clean them up night a purdy. I've done this to 3 heads now and never had a problem.

sorry after posting this i seen you dont wanna remove the valve. the seafoam might work but it wont "eat" the carbon off. You'd need to find something thats hard enough to scrap the crabon off but soft enough not to hurt the alumin. head

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Old 12-19-2010, 09:13 AM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #5 (permalink)
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well i went ahead and took the valves out. I have yet to try the oven cleaner but i heard somewhere on here that pb blaster works. I let it sit overnight but it didnt seem to work that well.

here's what one of them looks like after sitting over night. is this to far gone? or can it be saved. oh yeah thats the exhaust too
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Old 12-19-2010, 09:26 AM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #6 (permalink)
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Amigo, That is baad. Just get a benchgrinder with a wire wheel on it. Wear saftey glasses.


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Old 12-19-2010, 11:22 AM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #7 (permalink)
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Quote:
Originally Posted by bastarddsm View Post
Amigo, That is baad. Just get a benchgrinder with a wire wheel on it. Wear saftey glasses.
+1. This is how I cleaned mine when I rebuilt the head. Then just get some valve lapping compound and relap the valves to the seats.


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Old 12-19-2010, 11:24 AM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #8 (permalink)
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REpalce them. I have a good set of stock valves if you want to buy them from me. CHEAP!
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Old 12-19-2010, 11:29 AM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #9 (permalink)
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Yeah just buy some new ones, or even a good set of used ones. That thing looks like it has been hit with bbs or something...


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Old 12-19-2010, 02:47 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #10 (permalink)
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Well I don't have a bench grinder but I do have a dremel so ill just use that. I wish I could afford to buy some new valves or even used but money is really tight. Oh and that's just carbon on the exhaust valve. The intakes are nothing like that. ill keep you guys posted

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Old 12-20-2010, 05:28 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #11 (permalink)
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well guys the PB blaster didn't work so I decided to try sanding it off. I used my dremel sanding roller till I got the majority off then I hit it with a 220 finishing buffing pad and ended with a 320 grit. I ended up with what you see and I've only done one so far. Just wanted to get opinions if I did something I shouldn't have. There are no rough edges and everything is pretty smooth. I've never worked on the head before so I don't know what to look for. If I did good ill finish the other ones this way.
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Old 12-20-2010, 05:35 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #12 (permalink)
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soak them in purple power. it will eat threw rust strong stuff.


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Old 12-20-2010, 05:44 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #13 (permalink)
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Ill give that a try since I have some at home but I honestly don't think anything short of Grinding it off will work.

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Old 12-22-2010, 08:22 AM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #14 (permalink)
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glass bead them....

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Old 12-22-2010, 08:54 AM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #15 (permalink)
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If I had the resources to glass bead trust me I would but I Just a lonely ol backyard wrench lol I went ahead and did the sanding process and the lapped them. Only two of the exhaust valves didn't seat good. So I might just replace those.

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Old 12-22-2010, 09:03 AM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #16 (permalink)
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4G63 stainless valves, stock size H/P Eclipse & Turbo - eBay (item 380299400662 end time Dec-24-10 16:20:41 PST)

With all the time you've put into them, $110 doesn't seem too bad.


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Old 12-22-2010, 09:14 AM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #17 (permalink)
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Not really , I only spent about 2 hours cleaning them. that's intake and exhaust and lapping them. So I think my time was well spent. Besides I wouldve just been playing halo reach lol.

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Old 12-22-2010, 08:22 PM Show Printable Version Show Printable Version   Email this Post to a Friend Email this Post      #18 (permalink)
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Are venereal warts on valves contageous?
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