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FJR Motorcycle Forums
FJR Specific Discussion
85 Octane in The FJR
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<blockquote data-quote="garyahouse" data-source="post: 1002499" data-attributes="member: 20946"><p>Sea Foam: I always thought ya used that stuff to clean out the injectors. Do they make more than one product, or do you use it as a stabilizer over the winter months... just like many use Stabil?</p><p></p><p>Here's an interesting question: if alcohol is so detrimental to performance, how is it that it makes so much more power than gasoline at the dragstrip? Anybody out there know the details about compression ratios and fuel/air mixtures for pure alcohol? I'm a little rusty, but I believe the rate for gas is around 14 to 1 by weight, and alcohol is around 8 to 1. Though alcohol doesn't pack as much punch per ounce as gasoline, it's proper fuel/air ratio requires a lot more of it during each burn cycle. Simple math, just under twice as much fuel going into the engine produces more power per stroke. However, if you're measuring by the gallon, forget about mileage. And if your engine is set up for gas, forget about mixing the alcohol at it's optimum ratio. Net result? Less power and less mileage.</p><p></p><p>Gary</p><p></p><p>darksider #44</p></blockquote><p></p>
[QUOTE="garyahouse, post: 1002499, member: 20946"] Sea Foam: I always thought ya used that stuff to clean out the injectors. Do they make more than one product, or do you use it as a stabilizer over the winter months... just like many use Stabil? Here's an interesting question: if alcohol is so detrimental to performance, how is it that it makes so much more power than gasoline at the dragstrip? Anybody out there know the details about compression ratios and fuel/air mixtures for pure alcohol? I'm a little rusty, but I believe the rate for gas is around 14 to 1 by weight, and alcohol is around 8 to 1. Though alcohol doesn't pack as much punch per ounce as gasoline, it's proper fuel/air ratio requires a lot more of it during each burn cycle. Simple math, just under twice as much fuel going into the engine produces more power per stroke. However, if you're measuring by the gallon, forget about mileage. And if your engine is set up for gas, forget about mixing the alcohol at it's optimum ratio. Net result? Less power and less mileage. Gary darksider #44 [/QUOTE]
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FJR Motorcycle Forums
FJR Specific Discussion
85 Octane in The FJR
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