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Pump gas on endyns.. need help. .

Discussion in 'Engine Building' started by Crix, Aug 21, 2004.

  1. Crix

    Crix Senior Member

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    I am being told by several people that I can and then some saying I cant run pump gas on endyn 12.5 81.5 mm size pistons. Using a ls block b18b1. b16 head
     
  2. MaaseyRacer

    MaaseyRacer Senior Member

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    It all depends on where you live and how good of a tune you have. For instance if you live in California, that is super high for the 91 octane that we have here. Also plan on running at least something like hondata for that high compression, as you will have to properly tune for it.
     
  3. nfn15037

    nfn15037 Senior Member

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    Yes, you can with proper fuel/spark management and tuning. PM me for wideband 02 tuning in Florida.
     
  4. phunky.buddha

    phunky.buddha Admin with a big stick Admin VIP

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    No problem for me- I did it with 12.6:1 compression and 92 octane gas... shit tuned with a VAFC.
     
  5. Crix

    Crix Senior Member

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    ok thanks. Probably be going to a s100.
     
  6. Crix

    Crix Senior Member

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    ok what about using these pistons in a full itr. Head and block setup? Can it still be ran on 93.
     
  7. phunky.buddha

    phunky.buddha Admin with a big stick Admin VIP

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  8. B16

    B16 Super Moderator VIP

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    running 12.3:1 on 91 here
     
  9. radnulb

    radnulb Senior Member

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    I wouldn't go above 12 for 93 octane. Most power is made through ignition timing, and ignition is horribly touchy with compression above 12 on pump gas. Hardest motors I've ever tuned were high compression NA w/ lumpy cams. Totally unforgiving.
     
  10. liquid00meth

    liquid00meth Senior Member

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    Yeah it'll be hard to tune but you can do it, especially if your going with Hondata.
     
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