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supposedly I am not allow to run pump 91 gas on 11.5:1+ compresson any explanation why?

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Old May 17, 2006 | 05:03 PM
  #1  
b16nonoy's Avatar
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From: San Diego, ca, USA
Default supposedly I am not allow to run pump 91 gas on 11.5:1+ compresson any explanation why?

I was just curious to why its not a good pimture? is it cause its a higher compression and needs a more flamable gasoline to combust in the cylinder chambers??

my complete setup should probably be 12:1 with my head being milled, block decked resurfaced twice and my head gasket..
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Old May 17, 2006 | 05:05 PM
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Spec911's Avatar
 
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Default Re: supposedly I am not allow to run pump 91 gas on 11.5:1+ compresson any explanation why? (b16nono

Um no problems. All you need is an excellent cam to balance the compression out and a great tune. I mean damn near perfect. 91 octane is low.
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Old May 17, 2006 | 05:13 PM
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From: San Diego, ca, USA
Default Re: supposedly I am not allow to run pump 91 gas on 11.5:1+ compresson any explanation why? (b16nono

I am wanting to buy the Toda Spec B cams..

I have JE 11.5:1 83mm pistons...eagle h beam rods. my whole rotating assembly was balanced to 10,000rpm..and my head is stage 2/3 port and polished with KMS developement(might change my springs to todas as well)98 spec type r header with spoon sports exhaust will be attached to it....

b16 tranny with type r lsd and final drive 4.785

I was told I couldnt use pump gas on my setup...
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Old May 17, 2006 | 05:58 PM
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MR_Ek4's Avatar
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From: West Valley, Utah
Default Re: supposedly I am not allow to run pump 91 gas on 11.5:1+ compresson any explanation why? (b16nono

you should be fine on pump gas. there is a million threads about this search and maybe it will be some more help. Is your block sleeved?
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Old May 17, 2006 | 06:00 PM
  #5  
b16nonoy's Avatar
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From: San Diego, ca, USA
Default Re: supposedly I am not allow to run pump 91 gas on 11.5:1+ compresson any explanation why? (b16nono

yes..here is wjhat my block looks like...check this link

https://honda-tech.com/zerothread/1628670
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Old May 17, 2006 | 06:14 PM
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MR_Ek4's Avatar
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Default Re: supposedly I am not allow to run pump 91 gas on 11.5:1+ compresson any explanation why? (b16nono

ahh nice that explains the 83mm pistons. Good luck
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