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Sportster Motorcycle Air intake, Carburetor, EFI, Fuel, and Exhaust Problems, advice and/or how tos for Sporster and Buell motorcycle carburators, Electronic Fuel Injection (EFI), Air Intake, Fuel and Exhaust.

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View Poll Results: What grade gasoline do you use?
Premium Gas 91+ octane 3,748 82.00%
Mid-Grade Gas 89-90 octane 313 6.85%
Regular 87 octane 388 8.49%
I mix it up, don't care, etc. 103 2.25%
Change based on the weather 19 0.42%
Voters: 4571. You may not vote on this poll

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  #1851  
Old 3 Weeks Ago
boomerguy boomerguy is offline
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Join Date: May 2018
Location: Rural area in SW Virginia
Posts: 1,087
Sportster/Buell Model: XL883 Standard
Sportster/Buell Year: 2005
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Quote:
Originally Posted by Toejam503 View Post
What's nice about an 883 is that you can run 87 octane, where as a 1200 needs 91+ octane. I read somewhere that the MoCo designed all their V twins, before the M8, to run on 93 octane (except the 883). It's unreal how much more powerful and better fuel mileage, my 1200 feels and gets, when I run 94 octane. I avoid anything ethanol.
This is another thing I like about my "small" Harley 883 motor with low compression. It's like an anvil and tractor motor combined. It's not the fastest but it will probably run the longest of all the current Harley motors. The word, "bulletproof", best describes it. I hope Harley doesn't ever replace it because they would be "fixing something that isn't broken". My motor even has a carburetor which makes me like it even more.
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  #1852  
Old 2 Weeks Ago
Jarlaxle Jarlaxle is offline
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Join Date: Jul 2017
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Posts: 152
Sportster/Buell Model: XL883L bagster
Sportster/Buell Year: 2011
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Quote:
Originally Posted by Toejam503 View Post
What's nice about an 883 is that you can run 87 octane, where as a 1200 needs 91+ octane. I read somewhere that the MoCo designed all their V twins, before the M8, to run on 93 octane (except the 883). It's unreal how much more powerful and better fuel mileage, my 1200 feels and gets, when I run 94 octane. I avoid anything ethanol.
The manual for my 2011 and the one for 2017 both call for 91 in all SPortsters, 883 or 1200.
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  #1853  
Old 2 Weeks Ago
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glbsportster glbsportster is offline
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Sportster/Buell Model: 1200 C
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I use only Chevron premium......if not available then any premium top tier gasoline.....runs as smooth if not smoother than it should.
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