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heads off to shave or not to shave

Discussion in 'V6 Development And Modification' started by HDT_aero, Dec 16, 2008.

  1. HDT_aero

    HDT_aero Banned

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    The titles slightly miss leading i currently have a s1 v6 with a burnt exhaust valve on cyl no 4

    now ive purchased my self a complete top end off a low k vp so what i am wondering is if i take .020 off the heads (will cost me $55) and from what the machine shop says that wont cause me any issues fitting the manifold... will i run into any problems with the stock rods not allowing the valves to close completely?

    any other feedback on this situation either for or against is appreciated
     
  2. vn calais manual

    vn calais manual New Member

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    no, itl be fine.
     
  3. HDT_aero

    HDT_aero Banned

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    cheers just what i wanted to hear i take it youve done it?
     
  4. HDT_aero

    HDT_aero Banned

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    anyone else have any input?
     
  5. 6 shooter

    6 shooter New Member

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    .025 is what the owners manual recomends is the max so itll be mint
     
  6. immortality

    immortality Home of the smoky breakfast Bacon! Staff Member

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    shouldn't cause any clearance issues. however, to use the VP heads you going to have to change the entire top end over to the VP one as the manifolds are different and won't work with the s1 manifold on the VP heads, different cooling system etc.

    if your still worried about clearances, put some platersine on the top of a piston, refit head with old gasket and pushrods/rockers for that cylinder and then turn engine over by hand. pull head off and you can see exactly how close the valve gets to the piston
     
    Last edited: Dec 19, 2008
  7. greenfoam

    greenfoam New Member

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    Apart from the holes in the heads that the VN manifold doesn't use anyway I think they are just the same so it should be ok
     
  8. Pub247

    Pub247 Well-Known Member

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    yes you can bolt the s1 manifold on. It wont be an issue as long as you run the original rocker covers for the PCV.
    20 thou is sfa you can go to 40thou if you wish but i'd stick with 20-30
     
  9. HDT_aero

    HDT_aero Banned

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    cheers guys i am using the vp manifold etc anyway so that part wont be a drama i might even do a how to since the whole vp top on s1 vn thing comes up a bit
     

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