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Piston choice?

Discussion in 'Engine Building' started by quicksi, Aug 7, 2003.

  1. quicksi

    quicksi Senior Member

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    what would be a decent piston choice for an LSVTEC conversion on my Si? I am looking for a mid 11 comp ratio. This ios for my daily driven Si that I put 100 miles per day traveling for work.......
     
  2. lsvtec

    lsvtec GNU/Linux Evangelist

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    B16 Pistons should yield what you want. JDM pistons will have a slightly larger dome than the USDM ones.
     
  3. quicksi

    quicksi Senior Member

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    PR3's right? I know the JDM pistons have a slightly higher dome, but what comp ratios would I be dealing with if I use, say the JDM ITR slugs? CTR's would yield somewhere around 12 from what I have heard because of the unusally high dome.....
     
  4. lsvtec

    lsvtec GNU/Linux Evangelist

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    You are using a B16 head correct?
    I am going to assume it hasn't been milled.
    PR3 Pistons: 11.3:1
    P30(JDM) Pistons: 11.5:1
    USDM ITR: 10.8:1
    JDM ITR: 11.3:1
    CTR: 11.97:1
     
  5. quicksi

    quicksi Senior Member

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    Yes, I am using the B16 head, but the rings in my bottom end are going and I am burning oil like an alcoholic on a bender.....so should I just use the stock B16 pistons and maybe a mugen Head gasket to get the desired CR, or should I go with whole new slugs. By the way, the stock slugs have 126,000 miles on them, but mostly all highway.....
     
  6. D See 2

    D See 2 Senior Member

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  7. gocivicls

    gocivicls Senior Member

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    That calculator rules!!!!!!!
     
  8. lsvtec

    lsvtec GNU/Linux Evangelist

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    Take them out and have a look. If they are in good shape keep em, if not get some new ones.
     
  9. gocivicls

    gocivicls Senior Member

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    I dont mean to interupt quicksi's post but if I have a B18B block and head with JDM B16B pistons what is my (Piston-to-deck-heigt) A or B.

    A. OEM B16A/B
    B. OEM B18A/B/C1/C5 - B20B/Z
     
  10. lsvtec

    lsvtec GNU/Linux Evangelist

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  11. gocivicls

    gocivicls Senior Member

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