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pistons and valves

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  • pistons and valves

    I got 95 dished sohc pistons ,

    95 dished valves, and
    93 flat valves,

    Should I go with the flat valves, or lower the compression even more with the dished valves?

    What would the static ratos be for those?

    I dont plan on anybig boost psi's [email protected] mabye 230hp once I get my MS.
    90' Talon AWD,TSI, Holset HY-35.

  • #2
    having dished valves will not make any signifigant differance from the flat ones so i would just get better flat faced valves
    <br /><br />


    • #3
      Flat valves seem to work best. I've burned my fair share of dished valves with nitrous.
      - Jeff Silva
      2001 Chevrolet Tahoe Z71 5.3L, Blackbear tune, cranked keys, e-fans, Android head unit
      1997 Dodge Caravan SE 3.3L V6 family hauler
      Vacancy here, need project car


      • #4
        Its all in how the valve gets seated. A wider seat helps cool the edge of the valve.

        For your power goals I would use a 9.5:1 piston and the flat valves. With proper tunign it won't detonate, and the little bump in compression will help keep throttle response and off boost power up.
        -6S Resident Mechanical Forensics member #001.
        1995 SC2 Turbo 3.6L DOHC, 6sp manual, Ford 8.8 rearend running on MS3x.
        1998 F-250 5.4L triton...stock.


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