Sunoco 100 Octane!!!
Tourer
Joined: Jul 2006
Posts: 284
Likes: 0
From: Milwaukee
RE: Sunoco 100 Octane!!!
If you're having a bit of trouble with some occassional detonation with your higher than stock compression on 93 octane, why not just take a touch of timing out of it? Double up the base gasket? Shave the piston dome a fuzz to take a smidge of compression back out of it? With good heads, you should be able to run ten and a half to one on pump gas in the flat lands. Where is your's at? Seems to be easier ways to solve that issue than over paying for race fuel you don't really need.
I like running half 100 and half 89 just for the pure smell! But since the compression on my scoot is still stock, I just run 89 in the warm weather and 87 in the winter, no problems with detonation ever.
Fuel myths are almost as prevelent as oil myths, but the bottom line is that you really want to run as low as an octane rating as possible with worrying about detonation. Now granted not all gasolines are created equal [Honda racing doesn't run $100/gallon Elf for nothing], but for the average street application, whatever you can get your hands on will be just fine.
I like running half 100 and half 89 just for the pure smell! But since the compression on my scoot is still stock, I just run 89 in the warm weather and 87 in the winter, no problems with detonation ever.
Fuel myths are almost as prevelent as oil myths, but the bottom line is that you really want to run as low as an octane rating as possible with worrying about detonation. Now granted not all gasolines are created equal [Honda racing doesn't run $100/gallon Elf for nothing], but for the average street application, whatever you can get your hands on will be just fine.
Road Warrior
Joined: Nov 2006
Posts: 1,738
Likes: 7
From: St. Charles, IL
RE: Sunoco 100 Octane!!!
Stock bikes don't need and do NOT run better with higher than 93 octane. As I said before, it is a myth that has been shot down numerous times. The only one that benefits from you using that high priced stuff is the fuel company. Cause their ad execs were successful in brainwashing another person.
Go ahead an line their pockets some more, they love you for it
Go ahead an line their pockets some more, they love you for it
Road Captain
Joined: Mar 2007
Posts: 531
Likes: 0
RE: Sunoco 100 Octane!!!
If you need 100 octane to make your stock motor run right, you've got a tuning
problem. I've played this game with past highcompression builds,and it's a pain in
the butt.Depending on how radical a build you're doing, you can getgood HP
and torque from a motor with less than 10 to 1, and run real well on 93 octane.
Tough to plan a road trip around Sunoco gas station locations.
problem. I've played this game with past highcompression builds,and it's a pain in
the butt.Depending on how radical a build you're doing, you can getgood HP
and torque from a motor with less than 10 to 1, and run real well on 93 octane.
Tough to plan a road trip around Sunoco gas station locations.
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Elite HDF Member
Joined: Mar 2006
Posts: 4,722
Likes: 5
From: Biddeford, Maine
RE: Sunoco 100 Octane!!!
ORIGINAL: jack49
If you need 100 octane to make your stock motor run right, you've got a tuning
problem.
If you need 100 octane to make your stock motor run right, you've got a tuning
problem.
Steve
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