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Generation IV Internal Engine
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Old 02-09-2008, 11:24 PM   #1
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Default Whats the highest compression you can go on pump gas 93 octane?

i have seen 11.4
i am wondering what can be done with 93octane? What would you have to do to the ls6 head to achieve this?
how much HP and torque is uppin gthe compression good for?
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Old 02-10-2008, 10:29 AM   #2
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Originally Posted by Johny GTO View Post
i have seen 11.4
i am wondering what can be done with 93octane? What would you have to do to the ls6 head to achieve this?
how much HP and torque is uppin gthe compression good for?
I ran 12:1 but couldn't run much timing. I dropped it to 11.3 and added another 5 degrees of timing and picked up 30 RWHP.

Depends on your setup.
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Old 02-10-2008, 10:39 AM   #3
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I ran 12:1 but couldn't run much timing. I dropped it to 11.3 and added another 5 degrees of timing and picked up 30 RWHP.

Depends on your setup.
yep. im at 11.2 SCR and 8.6ish DCR. DCR has a lot to do with knock also.
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Old 02-10-2008, 12:35 PM   #4
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I am at 11.3:1....... pimpin pump gas NA and race gas in the standalone.
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Old 02-10-2008, 12:35 PM   #5
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i would imagine knock is what limits you, hence the question how much compression can u run on pump gas? I guess i should have said what is the highest power output combination of timing and compression u can run on an NA LS2?
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Old 02-10-2008, 01:29 PM   #6
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DCR is probably a better value to consider rather than SCR. Keep the DCR below 9.0 and you should be okay.
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Old 02-10-2008, 02:43 PM   #7
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depends of physical altitude too..
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Old 02-10-2008, 03:37 PM   #8
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Quote:
Originally Posted by Johny GTO View Post
i have seen 11.4
i am wondering what can be done with 93octane? What would you have to do to the ls6 head to achieve this?
how much HP and torque is uppin gthe compression good for?
Don't forget by adding a simple water methanol injection system, we can dramatically raise the octane level of your pump gas allowing the use of higher compression when normally not achievable. Additionally, NA users may add a water methanol injection system to their combination for added safety to ensure they have more then enough octane and eliminating the chances of detonation all together.

For questions or more information about this, email us directly at info@alcoholinjectionsystems.com or call us directly for immediate assistance at 1.801.447.2559.

Let us know how we can help.
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Old 02-10-2008, 04:09 PM   #9
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It's all about DCR not SCR.
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Old 02-10-2008, 04:17 PM   #10
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Quote:
Originally Posted by AIS View Post
Don't forget by adding a simple water methanol injection system, we can dramatically raise the octane level of your pump gas allowing the use of higher compression when normally not achievable. Additionally, NA users may add a water methanol injection system to their combination for added safety to ensure they have more then enough octane and eliminating the chances of detonation all together.

For questions or more information about this, email us directly at info@alcoholinjectionsystems.com or call us directly for immediate assistance at 1.801.447.2559.

Let us know how we can help.
i was thinking about using an injection system if i stay NA, and the dude i mentioned it to looked at me as if i was crazy. He insisted it is pointless on NA, and therefore not many places make NA based injection systems. I asked him if he ever thought about wearing a diaper on his head since he talked so much bullshit. He didnt like that.

seems i was correct.
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Old 02-10-2008, 04:19 PM   #11
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I'm running 11.8 on 91 octane and i haven't ran in to any problems yet. Granted the weather being so cold lately probably helps.
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Old 02-10-2008, 06:02 PM   #12
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Quote:
Originally Posted by AIS View Post
Don't forget by adding a simple water methanol injection system, we can dramatically raise the octane level of your pump gas allowing the use of higher compression when normally not achievable. Additionally, NA users may add a water methanol injection system to their combination for added safety to ensure they have more then enough octane and eliminating the chances of detonation all together.

For questions or more information about this, email us directly at info@alcoholinjectionsystems.com or call us directly for immediate assistance at 1.801.447.2559.

Let us know how we can help.
Request for information on AI system sent.
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Old 02-10-2008, 07:28 PM   #13
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We replied to your other post and questions. Let us know if you have any other questions or how we can help.
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