Valve, and valve seat cleaning.

Posted by 1stGENracer, Jun 3, 2004
Cylinder Head & Short Block - 4G63 cams, valvetrain, pistons, rods, stroker kits, 6-bolt swaps, hybrids, etc. Read this Forum's Strict Guidelines.

  1. 1stGENracer

    1stGENracer Proven Member

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    Lewiston, Idaho
    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 :thumb:
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  2. NOSNUSE

    NOSNUSE Proven Member

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    belpre, Ohio
    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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  3. 97ebaygst

    97ebaygst Proven Member

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    thomasville, North_Carolina
    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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  4. rshissler

    rshissler Proven Member

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    Dornsife, Pennsylvania
    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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  5. 97ebaygst

    97ebaygst Proven Member

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    thomasville, North_Carolina
    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

    Attached Files:

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  6. bastarddsm

    bastarddsm Supporting Member

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    Mendota, Illinois
    OMG Amigo, That is baad. Just get a benchgrinder with a wire wheel on it. Wear saftey glasses.
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  7. Redwidow

    Redwidow Proven Member

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    Coldwater, Michigan
    +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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  8. VETTE_50_TH

    VETTE_50_TH Banned Member

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    Columbus, Ohio
    REpalce them. I have a good set of stock valves if you want to buy them from me. CHEAP!
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  9. NOSNUSE

    NOSNUSE Proven Member

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    belpre, Ohio
    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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  10. 97ebaygst

    97ebaygst Proven Member

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    thomasville, North_Carolina
    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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  11. 97ebaygst

    97ebaygst Proven Member

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    thomasville, North_Carolina
    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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  12. pj91gsx

    pj91gsx Freelancer

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    Stuart, Virginia
    soak them in purple power. it will eat threw rust strong stuff.
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  13. 97ebaygst

    97ebaygst Proven Member

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    thomasville, North_Carolina
    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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  14. BogusSVO

    BogusSVO DSM Wiseman

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    Pensacola, Florida
    glass bead them....
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  15. 97ebaygst

    97ebaygst Proven Member

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    thomasville, North_Carolina
    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.
    #15
  16. big_d

    big_d Proven Member

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    #16
  17. 97ebaygst

    97ebaygst Proven Member

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    thomasville, North_Carolina
    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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  18. bjones18

    bjones18 Proven Member

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    canton, Michigan
    Are venereal warts on valves contageous?
    #18

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