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copper spraying head gasket?

Discussion in 'Engine Building' started by 99sidude, Aug 22, 2007.

  1. 99sidude

    99sidude Moderator Moderator VIP

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    I am soon going to be reassembling my gsr motor destined to see 10 psi of boost. I have a felpro metal HG and ARP head studs. The owner of a local shop that specializes in Nissans told me to lightly coat the gasket with copper spray gasket maker because it helps create a better seal.

    Have any of you in the Honda world seen this done?

    Results?
     
  2. welfare

    welfare Ancient Member

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    NO, metal headgaskets are designed to go on DRY
    a nissan is not a honda
     
  3. formby

    formby learning in progress

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    i spray my HG with the copper stuff.

    ive never had a prob

    4 engine builds
     
  4. 99sidude

    99sidude Moderator Moderator VIP

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    You're right... I read the package more carefully and the Felpro does have a thin, sticky rubber coating to help it seal. I'm gonna go without the copper spray. Thanks!
     
  5. TurboMirage

    TurboMirage YEEAAAHHH VIP

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    i would use the copper spray.

    i've done a number of headgaskets, from metal ones, to fiber ones and etc. even on the fiber ones ive used the copper spray. my first MLS gasket i did not. guess what - i had seepage.

    so i just torqued the head studs down a little more ;) but then again this was on my mirage and my head studs are ginormous compared to the tiny honda/nissan ones. i think im about 15lb-ft more than i should be but no problems since.

    i dont recommend torquing them down more than they need to go. use the spray.
     
  6. 99sidude

    99sidude Moderator Moderator VIP

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    The felpro gakset comes with some sort of tacky sealing material already on it. Would you use the spray on a metal HG that already comes with a tacky sealant on it, or just on a gasket that is plain metal.

    I like the idea of added insurance of the copper spray, I just want to make sure that it is nececary/beneficial on a metal HG that already has a rubbery coating.
     
  7. TurboMirage

    TurboMirage YEEAAAHHH VIP

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    i would use it anyways but that is just my opinion.
     
  8. TurboMirage

    TurboMirage YEEAAAHHH VIP

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  9. welfare

    welfare Ancient Member

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    Yeah, that is something I should have posted, I have over 50 engine builds and I either use OEM, Fel-Pro, or the gasket supplied by golden eagle (who I get my blocks sleeved by) all of which have the thin coating, I ahve never had any problems unless it was something else I did in my early days, such as not checking warpage or straightness, but that was then, either way, I have done turbo, NA and supercharged setups with OEM gaskets and never had any problems, My pride and joy engine (in my old roommates civic) runs 36lbs on a b16 with an OEM gasket and has over 100 passes on it and there is NO PROBLEMS.
    Either way, I guess it would be preference, I always thought that the MLS gaskets were designed ot go on dry because they have that thin coating already on them so I never used any sealent.
     
  10. formby

    formby learning in progress

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    i use cometic gaskets
     
  11. welfare

    welfare Ancient Member

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    I think that is what I get from golden eagle when I get a block done
     
  12. welfare

    welfare Ancient Member

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    it's a very thin black layer, it's like rubbery, you see it better when you take the engine apart rather than when you put it together.
    Either way, I have never used sealant on them and haven't had any problems, like I said, I guess it's prefrence.
     
  13. 99sidude

    99sidude Moderator Moderator VIP

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    Direct quote from the felpro package:

    The surface of this gasket has a very thin black layer of a specially developed rubber, which seals head or block surface finish up to 60ra. This rubber coating is slightly tacky by design. It will attract dust.
     
  14. CRX-YEM

    CRX-YEM Super Moderator Moderator VIP

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    or you could do what the buick gn,gnx,t-type guys do and use a copper compression head gasket. I've seen t-types boosted to 30+ psi with this type of gasket. I'm not sure anyone makes a copper gasket for hondas tho
     
  15. boostin4fun

    boostin4fun Boosted ls/vtec ohh yeah!

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    I only use honda oem headgaskets. I have never had a problem with a blown head gasket. If the head and deck surface are straight you wont have a problem. I always use the arp headstuds though. I dont see why you want to use a copper head gasket for 10 lbs of boost, you have nothing to worry about using a factory gasket. I think you will increase your chances of having a problem going with the copper. Make life easy and get the oem one!
     
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