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what is the highest compression ratio that can be run on 93 octan?

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Old Sep 15, 2003 | 04:27 PM
  #1  
JDM2ndGen's Avatar
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From: yonkers, n.y., U.S.
Default what is the highest compression ratio that can be run on 93 octan?

Ok ...well i did a search for this and didnt come up with what i was looking for ...what is the highest compression ration that you can run with 93 octan for a 1.8l or 2.0l with alot of tuning ? sorry if im not detailed enough i just want a basic idea...
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Old Sep 15, 2003 | 05:35 PM
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Mr Hammond's Avatar
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Default Re: what is the highest compression ratio that can be run on 93 octan? (JDM2ndGen)

Sakai has done 13:1. I'd stick to around 12-12.5:1 as even this will require a good amount.
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Old Sep 15, 2003 | 09:47 PM
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Default Re: what is the highest compression ratio that can be run on 93 octan? (JDM2ndGen)

I"m running 12.5 on 93 octane.
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Old Sep 15, 2003 | 09:53 PM
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Default Re: what is the highest compression ratio that can be run on 93 octan? (TRuST)

we have run 14.1 on 91 pump gas with only a VAFC.
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Old Sep 15, 2003 | 10:11 PM
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Default Re: what is the highest compression ratio that can be run on 93 octan? (PacMan ITR)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PacMan ITR &raquo;</TD></TR><TR><TD CLASS="quote">we have run 14.1 on 91 pump gas with only a VAFC. </TD></TR></TABLE>
holy fawk.
How do you keep it cold?
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Old Sep 16, 2003 | 03:26 AM
  #6  
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Default Re: what is the highest compression ratio that can be run on 93 octan? (PacMan ITR)

your crazy...
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Old Sep 16, 2003 | 04:48 AM
  #7  
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Default Re: what is the highest compression ratio that can be run on 93 octan? (preluda92)

why is it that people ask this question every day just about? try the SEARCH function in the upper right corner of the site (which you said you did).. Then use your brain and interpret what is being said in those posts.. I know there have been a couple that said 12.5 is max for street with super good tuning.... Bottom line is your tunere is responsible for the MAX compression you can run. Not trying to be a dick, but I'm just getting tired of the same **** over and over....
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Old Sep 16, 2003 | 07:22 AM
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Default Re: what is the highest compression ratio that can be run on 93 octan? (PacMan ITR)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PacMan ITR &raquo;</TD></TR><TR><TD CLASS="quote">we have run 14.1 on 91 pump gas with only a VAFC. </TD></TR></TABLE>

J&S Safeguard?
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Old Sep 16, 2003 | 07:39 AM
  #9  
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From: san antonio, tx, usa
Default Re: what is the highest compression ratio that can be run on 93 octan? (JDM2ndGen)

it depends on many factors like quench, altitude, temperature, and fuel temp, 14.25:1 with no detonation, in 98 degree weather dry heat. spend the money,on coatings and good pistons, and a good port job, and valves,
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Old Sep 16, 2003 | 10:13 AM
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Default Re: what is the highest compression ratio that can be run on 93 octan? (freracing)

11.0 is good.

You can make good power with this CR.
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Old Sep 16, 2003 | 06:44 PM
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From: yonkers, n.y., U.S.
Default Re: what is the highest compression ratio that can be run on 93 octan? (Rocket)

cool ...thanks for the replies and info guys ...now i got a good idea ...and i did do a search and i dont know where they post the threads because i only came up with 2 but my fault ...but if there are more that you know of post them up here and ill read them ...but now i got a good idea of what can be run on 93 with very good tuning ...thanks for the help guys ...if anyone else has something to add let me know ...
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