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Old 03-13-2019, 03:44 PM   #31 (permalink)
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litesong wrote: not efficiently burned.......
Originally Posted by jakobnev View Post
Octane doesn't work like that.
litesong wrote: So...... gasoline engineers, who design 87 octane gasoline engines & specify 87 octane 100% gasoline(E0) for their engines, do NOT do so, for efficient operations?
So, that explains why the "ethanol in gasoline industry" is happy to pump accurate
82.3 octane gasoline & 114 octane ethanol (E15) into 87 octane designed gasoline engines.

Last edited by litesong; 03-13-2019 at 04:13 PM..
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Old 03-13-2019, 04:04 PM   #32 (permalink)
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I would consider methyl-ethyl blends as well if there is sufficient methanol from wood and paper waste. The issue for older engines is the valve seats made when lead was in the fuel. These can be replaced when the valve job is done. The other issue is the fuel system materials. Xylene is the common ingredient in fuel stabilizer; just don't get it on your skin. Marine, motorcycle, and aviation engines have their own requirements. Too often laws are passed without enough care given to testing technical issues. This country is too vast to rely on a one size fits all mentality. The Quality Revolution is making authoritarian governance by decree obsolete.
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Old 03-13-2019, 05:28 PM   #33 (permalink)
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The Quality Revolution is making authoritarian governance by decree obsolete.
If I believed that were true, I'd be more hopeful.

What I learn at the McMinnville airport drag strip in 1959 was that if you want to burn [114 octane] ethanol you bore out the carburetor jets and shave the heads.

I guess computer controlled fuel system are more tolerant of oddball mixtures. Nitromethane, anyone?
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Old 03-14-2019, 11:28 AM   #34 (permalink)
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The alcohol attacks anything in the fuel system sensitive to either alcohol or water.

Older cars leak before the valve seats die.

You bored the jets becuse it ran lean and jets didn't go to 90, you shaved the heads because it promoted higher compression and the 114 wouldn't ping.

2000 F250 7.3 CC 20+ MPG @ 10000 #
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Last edited by Piotrsko; 03-14-2019 at 11:35 AM..
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