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highest c.r. on pump gas??

Discussion in 'HYBRID -> ED-EF / DA' started by awdriscol4, Nov 10, 2004.

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  1. awdriscol4

    awdriscol4 Junior Member

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    I am building my ls/vtec, and have to decide what pistons to go with.

    My question is, what is the highest c.r. you can run safely on pump gas (92 octane of course).

    Im leaning towards a CTR piston (yes I know, Ill have to modify the ls rod for it to fit), but using the c.r calculator at c-speedracing.com, it gives me a c.r of 12.38xxx (thats using a b18a/b block, b16a head, b16b piston, oem headgasket, and orig deck height)

    Anyone know what the limits for c.r. on pump gas are??

    Thanks

    Alfred
     
  2. jamesA

    jamesA Well known pissed off telephone guy VIP

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    i believe the limit on 93 octane pump would be in the upper 12s.. Cal had a few cars on 12.x:1 CR.

    After 13s you'd need race gas, which is like 3-4 bucks a gallon depending on where you live.
     
  3. Jeef

    Jeef NO MA'AM Moderator VIP

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    This topic has been closed :locked2:

    Why? It is in the wrong place. Please post your topic in the right forums. Hybrid is not for suspension or interior posts. EG is not for EF questions, and so forth.

    If you have any questions, please PM the moderator who closed this topic.

    -The moderating Team
     
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