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dumb question: 91 octane

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Old 02-21-2002 | 08:54 PM
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Dave Jones's Avatar
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Default dumb question: 91 octane

Dumb question: Can an LS1 run, say, 7 pounds of intercooled boost on California 91 octane gas and standard timing?
Old 02-21-2002 | 09:06 PM
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Default Re: dumb question: 91 octane

I don't think so...
Old 02-21-2002 | 09:33 PM
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Default Re: dumb question: 91 octane

seriously doubt it.

tuning a friends powerdyne car now with ls1-edit.
sees 7psi at redline, no intercooler, 91 octane.
we have to pull from 8-10 degrees of timing along the curve to not ping.
so with the intercooler you could probably get away with only pulling 4-6?????

pure guesstimation.
Old 02-21-2002 | 09:53 PM
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Default Re: dumb question: 91 octane

I get up to 3 degrees of knock on 91 with no boost, in the summer and thats with no boost just NA. I will most likely be mixing in some 104 unleaded with every tank whenever there is boost.

Gary
Old 02-22-2002 | 07:09 AM
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Default Re: dumb question: 91 octane

why cant they just sell 110 at the pump.
ANd no more then $2 a gallon too. <img src="graemlins/gr_jest.gif" border="0" alt="[jester]" />
Old 02-22-2002 | 02:43 PM
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Default Re: dumb question: 91 octane

Nope. I'm in AZ ( little warmer ). Even with nice cool temps in the 50's with 91, I still have to pull a bit of timing with 5 pounds.

- Dug
Old 02-22-2002 | 10:35 PM
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Default Re: dumb question: 91 octane

Don't do it, as of 1930 hours 22FEF02, I speak from expierience, it will break.



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