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VN S1 Manifold Converting To S2

Discussion in 'VN - VP Holden Commodore (1988 - 1993)' started by needwork2-4fillhabbit, Jun 3, 2009.

  1. Jun 3, 2009 #1
    needwork2-4fillhabbit

    needwork2-4fillhabbit New Member

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    I'm wanting to remove my s1 manifold and convert to a s2 manifold i have both at the moment and just want to know a definate what has to be done to fit use it? I have searched this topic and did find 'some' info but not a whole lot...
     
    needwork2-4fillhabbit, Jun 3, 2009
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  2. Jun 3, 2009 #2
    Zuicider

    Zuicider Banned

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    need a different radiator, different surge tank and a two pipe heater tap
     
    Zuicider, Jun 3, 2009
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  3. Jun 3, 2009 #3
    vn calais manual

    vn calais manual New Member

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    what about the pcv?
     
    vn calais manual, Jun 3, 2009
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  4. Jun 3, 2009 #4
    delcowizzid

    delcowizzid on holiday

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    you can just use the vn PCV setup still
     
    delcowizzid, Jun 3, 2009
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  5. Jun 4, 2009 #5
    Leebo

    Leebo New Member

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    There's a guy selling a custom twin throttle body manifold for like $500 on Ebay.
    Ready to fit straight into a VN S1. If you r interested in a bit more go
     
    Leebo, Jun 4, 2009
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  6. Jun 4, 2009 #6
    needwork2-4fillhabbit

    needwork2-4fillhabbit New Member

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    Nah i have a sc14 ready to go and the throttlebody will be before the blower so no use.
     
    needwork2-4fillhabbit, Jun 4, 2009
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  7. Jun 4, 2009 #7
    Leebo

    Leebo New Member

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    okay no worries
     
    Leebo, Jun 4, 2009
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  8. Jun 4, 2009 #8
    needwork2-4fillhabbit

    needwork2-4fillhabbit New Member

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    And what impovements is there in a series 2 manifold besides the forward facing radiator inlet?
     
    needwork2-4fillhabbit, Jun 4, 2009
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  9. Jun 4, 2009 #9
    delcowizzid

    delcowizzid on holiday

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    there is less hot water channels under it from looking at the pics immortality has so it might run a little colder and may have minimal flow gains apart from that its the same part
     
    delcowizzid, Jun 4, 2009
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  10. Jun 4, 2009 #10
    Zuicider

    Zuicider Banned

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    aye less bits and easier to change that damned thermostat
     
    Zuicider, Jun 4, 2009
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  11. Jun 4, 2009 #11
    rob drag racer

    rob drag racer vn vp drag nut

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    vp 3.8 with gas new project vn s1 guted strip only
    i dont think theirs relay any gain from changing them i looked into it seeing i have the s1 vn now and have all the s2 spares they flow the same but as said they might run a touch cooler not sure
     
    rob drag racer, Jun 4, 2009
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  12. Jun 4, 2009 #12
    Nevyn

    Nevyn Member

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    I think you have to drill holes in the heads as well to match up the water flow
     
    Nevyn, Jun 4, 2009
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  13. Jun 4, 2009 #13
    delcowizzid

    delcowizzid on holiday

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    the only hole needed is the PCV valve hole in the drivers side head if you want to use S2 pvc valve setup which is inside the manifold unlike vn s1 setup
     
    delcowizzid, Jun 4, 2009
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  14. Jun 4, 2009 #14
    Nevyn

    Nevyn Member

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    fair enough....I thought it was for the water flow....was going to do the samething meself a while back, but figgered, how often do u need to change the thermostat anyway....and while u have the throttle body off u can give it a good clean
     
    Nevyn, Jun 4, 2009
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  15. Jun 5, 2009 #15
    markovr

    markovr Well-Known Member

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    markovr, Jun 5, 2009
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  16. Jun 5, 2009 #16
    delcowizzid

    delcowizzid on holiday

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    hey markovr did you only drill the hole in the passenger head cause isnt the pcv hole in the drivers side head at the front LOL
     
    delcowizzid, Jun 5, 2009
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