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  1. #1
    Stop staring at my tits NJJer's Avatar
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    Question What size domes?????

    I just happen to have a Yamaha/Westcoast head with replaceable domes sitting around doing nothing.

    I am thinking about putting it on my Blaster that I am getting on Friday.

    Engine is a 61X

    What size domes should I use on a stock non-ported engine for a little more power?
    Keep in mind that this head uses the stock head gasket.

    Not sure where I want the cranking PSI to be with this one. I know I don't want it near my other one at 195.

    Do I want around 175?


    Mods are:
    Factory Pipe Limited
    Factory Pipe Water Box
    K&N
    Pre-mix
    Re-jetted
    Solas (at this time, unknown pitch)

    I think this is all, old age kicking in again.

    TIA


  2. #2
    Mpeavler's Avatar
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    175-180 is a good pump gas safe range ....185 IMO is pushing it ...but stafe as long as you keep it cool with 93. I would MANDATE on my skis with factory pipes...dual cooling however....I never ran without it.....with my MOD pipes

    M

  3. #3
    Stop staring at my tits NJJer's Avatar
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    So how does this sound?

    175psi
    Dual cooling
    Dual pissers
    93+octane

    That should be a safe combo, correct?

  4. #4
    Mpeavler's Avatar
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    Yup...sounds great!

  5. #5
    Stop staring at my tits NJJer's Avatar
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    Now to find out what size domes I need.....and to track 2 of them down.

    Thanks Mike!

  6. #6
    Mpeavler's Avatar
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    I need to track down my old roomate....he's not answering his email....grrrr He's got your domes!
    M

  7. #7
    Stop staring at my tits NJJer's Avatar
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    Quote Originally Posted by Mpeavler View Post
    I need to track down my old roomate....he's not answering his email....grrrr He's got your domes!
    M
    Those Greater domes would be nice, then I could use that head for Blaster #2

    Then get some Westcoast domes and use that head on Blaster #3


    Don't go crazy over those domes, Mike. I am sure he/they will turn up sooner or later.

  8. #8
    bainer1290's Avatar
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    Not sure if the 61X's used the same domes as the 65U, but if they do I got 2 36cc's. They were in a Greater Yamaha head on my GP1200.

    http://www.greenhulk.net/forums/show...25#post1037225

  9. #9
    Stop staring at my tits NJJer's Avatar
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    Quote Originally Posted by bainer1290 View Post
    Not sure if the 61X's used the same domes as the 65U, but if they do I got 2 36cc's. They were in a Greater Yamaha head on my GP1200.

    http://www.greenhulk.net/forums/show...25#post1037225
    IIRC I need 83mm

    Not sure what size the 65U is

    If they are the same, I have no idea what the PSI would be.

    I will look into this, thanks.

  10. #10
    bainer1290's Avatar
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    STD bore on 65U is 84mm not sure if that helps, I can measure the domes too, let me know if you want me to dig them out. PM me

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