The Sportster and Buell Motorcycle Forum - The XLFORUM®
 

Go Back   The Sportster and Buell Motorcycle Forum - The XLFORUM® > SPORTSTER MOTORCYCLE FORUM > Sportster Motorcycle Intake and Exhaust > Sportster Motorcycle Air intake, Carburetor, EFI, Fuel, and Exhaust
XLF Blogs XLF Arcade XLF Disclaimer/Privacy Statement/Terms Of Use

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.

Active Threads
5 Nightster tyre type "-" or "B"
Last Post: b0fh
Posted On: 10 Minutes Ago
Replies: 1
Views: 22
0 Keep & Kill
Last Post: Crusty
Posted On: 52 Minutes Ago
Replies: 15,342
Views: 863,382
0 Range With EFI 3.3 Gal Tank
Last Post: corndog76
Posted On: 1 Hour Ago
Replies: 97
Views: 59,799
0 Issues with my jiffy stand... HELP!
Last Post: corndog76
Posted On: 1 Hour Ago
Replies: 11
Views: 323
0 Range feature on the speedo/tach combo
Last Post: IXL2Relax
Posted On: 2 Hours Ago
Replies: 1
Views: 40
0 2009 Speedometer Wiring/Colors
Last Post: IXL2Relax
Posted On: 2 Hours Ago
Replies: 2
Views: 39
0 Hi From Atlanta
Last Post: juzyHD
Posted On: 2 Hours Ago
Replies: 2
Views: 28
0 Banjo bolt sizes for front brake line.
Last Post: slamtry
Posted On: 3 Hours Ago
Replies: 20
Views: 419
0 roadside belt change
Last Post: jazzman
Posted On: 3 Hours Ago
Replies: 23
Views: 1,999
0 Too HOT to ride?
Last Post: Kbetts
Posted On: 4 Hours Ago
Replies: 325
Views: 25,578
0 What did you do for your sporty Today?
Last Post: mrbreezeet1
Posted On: 4 Hours Ago
Replies: 6,558
Views: 879,468
5 What Color Helmet is Most Noticable?
Last Post: Ireeman
Posted On: 5 Hours Ago
Replies: 75
Views: 11,520
12 Lets see the "C's" XLC's that is. Pics Please!
Last Post: glbsportster
Posted On: 5 Hours Ago
Replies: 1,219
Views: 452,441
0 Sonnax, Timken, Torrington
Last Post: ryder rick
Posted On: 5 Hours Ago
Replies: 18
Views: 549
0 Official XL Forum Random Image Thread (NO NUDITY!)
Last Post: Graywolf
Posted On: 5 Hours Ago
Replies: 46,199
Views: 7,322,659
0 Need Float for Zenith, or a replacement Zenith
Last Post: Gulf Coaster
Posted On: 6 Hours Ago
Replies: 0
Views: 22
0 Do Sportster Low XL883L models have a shorter jiffy stand spring?
Last Post: rocketmangb
Posted On: 6 Hours Ago
Replies: 7
Views: 171
0 Seeking advice on shorter rear shocks
Last Post: Gulf Coaster
Posted On: 6 Hours Ago
Replies: 30
Views: 1,785
0 External breathing systems
Last Post: Firehawk
Posted On: 6 Hours Ago
Replies: 4
Views: 257
0 Which Battery?
Last Post: NLXL
Posted On: 6 Hours Ago
Replies: 62
Views: 15,446
0 19'' Cast/Chrome Front Wheel
Last Post: knut
Posted On: 6 Hours Ago
Replies: 0
Views: 29
0 Hottie of the day, no nudity.
Last Post: trainman
Posted On: 7 Hours Ago
Replies: 16,385
Views: 1,596,713
0 Sportster Cobra seat
Last Post: doodah man
Posted On: 8 Hours Ago
Replies: 24
Views: 708
0 Cylinder Head Temp. How hot is too hot?
Last Post: rokytnji
Posted On: 8 Hours Ago
Replies: 73
Views: 24,289
0 Early 60's headlight "brow", "mount", "visor" or whatever you want to call it.
Last Post: brucstoudt
Posted On: 9 Hours Ago
Replies: 39
Views: 5,465
0 Right rear turn signal out 2002 XL1200C
Last Post: IXL2Relax
Posted On: 9 Hours Ago
Replies: 1
Views: 47
0 Sleeve cylinders?
Last Post: brucstoudt
Posted On: 10 Hours Ago
Replies: 17
Views: 750
0 so where the heck is insane shane?
Last Post: brucstoudt
Posted On: 10 Hours Ago
Replies: 8
Views: 429
0 Hot Rods, Rat Rods, and Customs.
Last Post: Stairman
Posted On: 11 Hours Ago
Replies: 3,901
Views: 507,114
0 Oil, Filters and Spark Plugs
Last Post: boomerguy
Posted On: 11 Hours Ago
Replies: 94
Views: 3,627
More...
Members Birthdays
Taipan (61), Harveyveepower (60), regoscar (51), kmm0000 (45), SmokeyDrifter (37)
View Poll Results: What grade gasoline do you use?
Premium Gas 91+ octane 3,707 81.94%
Mid-Grade Gas 89-90 octane 311 6.87%
Regular 87 octane 383 8.47%
I mix it up, don't care, etc. 104 2.30%
Change based on the weather 19 0.42%
Voters: 4524. You may not vote on this poll

Sponsored Links
Reply
 
Share Thread Tools Display Modes
  #1791  
Old 13th November 2019
Tomcatt Tomcatt is offline
Dazed & Confused
 
Join Date: Feb 2019
Location: Never Never Land
Posts: 827
Sportster/Buell Model: XL1200C
Sportster/Buell Year: 2017
Other Motorcycle Model: BMW R Nine T
Other Motorcycle Year: 2015
Reputation: 1085783
Tomcatt has a reputation beyond reputeTomcatt has a reputation beyond reputeTomcatt has a reputation beyond reputeTomcatt has a reputation beyond reputeTomcatt has a reputation beyond reputeTomcatt has a reputation beyond reputeTomcatt has a reputation beyond reputeTomcatt has a reputation beyond reputeTomcatt has a reputation beyond reputeTomcatt has a reputation beyond reputeTomcatt has a reputation beyond repute
Default

I run premium. There's a Mobil gas station "mart" about a mile from my house with 91 octane (M+R/2) no ethanol. I've been seeing some detonation, the ECU (with Powervision) has the detection software but oddly doesn't have the software to pull timing. So, I've been tailoring my fuel and timing mapping around knock indications. I expect the detonation to go away when I get the top end off and tighten up the squish clearances.

I went thru the same process on my BT Evo. It also had .055" head gaskets as OE. Harley made a running change to .040" head gaskets to tighten the squish clearance to fix the detonation issues the earlier BT EVO's had. I did more, also shortening the cylinders. Here I am 30+ yrs later doing the same the same thing on my '17 Evo Sportster. My BT EVO was an '87.
__________________
2017 XL1200C in Wisconsin, USA

Last edited by Tomcatt; 13th November 2019 at 19:26..
Reply With Quote
Sponsored Links
  #1792  
Old 13th November 2019
boomerguy boomerguy is offline
XL FORUM TEAM MEMBER
 
Join Date: May 2018
Location: Rural area in SW Virginia
Posts: 639
Sportster/Buell Model: XL883 Standard
Sportster/Buell Year: 2005
Reputation: 1458169
boomerguy has a reputation beyond reputeboomerguy has a reputation beyond reputeboomerguy has a reputation beyond reputeboomerguy has a reputation beyond reputeboomerguy has a reputation beyond reputeboomerguy has a reputation beyond reputeboomerguy has a reputation beyond reputeboomerguy has a reputation beyond reputeboomerguy has a reputation beyond reputeboomerguy has a reputation beyond reputeboomerguy has a reputation beyond repute
Default

The owner's manual says premium gas for the 1200 and regular for the 883 because of the compression ratio for each.
I usually run mid-grade 90 octane because that's the only octane for my non-ethanol gas available locally. While traveling away from the house, I can run 87 in my 2005 XL883 with no problem.
Reply With Quote
  #1793  
Old 13th November 2019
Tomcatt Tomcatt is offline
Dazed & Confused
 
Join Date: Feb 2019
Location: Never Never Land
Posts: 827
Sportster/Buell Model: XL1200C
Sportster/Buell Year: 2017
Other Motorcycle Model: BMW R Nine T
Other Motorcycle Year: 2015
Reputation: 1085783
Tomcatt has a reputation beyond reputeTomcatt has a reputation beyond reputeTomcatt has a reputation beyond reputeTomcatt has a reputation beyond reputeTomcatt has a reputation beyond reputeTomcatt has a reputation beyond reputeTomcatt has a reputation beyond reputeTomcatt has a reputation beyond reputeTomcatt has a reputation beyond reputeTomcatt has a reputation beyond reputeTomcatt has a reputation beyond repute
Default

Quote:
Originally Posted by boomerguy View Post
I usually run mid-grade 90 octane because that's the only octane for my non-ethanol gas available locally.
I'm not a "never ethanol" guy. I run 91 octane no ethanol because the station conveniently near my house sells it. Their (Mobil) premium was 93 octane with ethanol previously and I ran that. Same station where I usually fill my daily driver with "may contain up to 10% ethanol" regular.

Last edited by Tomcatt; 20th December 2019 at 05:08..
Reply With Quote
  #1794  
Old 13th November 2019
boomerguy boomerguy is offline
XL FORUM TEAM MEMBER
 
Join Date: May 2018
Location: Rural area in SW Virginia
Posts: 639
Sportster/Buell Model: XL883 Standard
Sportster/Buell Year: 2005
Reputation: 1458169
boomerguy has a reputation beyond reputeboomerguy has a reputation beyond reputeboomerguy has a reputation beyond reputeboomerguy has a reputation beyond reputeboomerguy has a reputation beyond reputeboomerguy has a reputation beyond reputeboomerguy has a reputation beyond reputeboomerguy has a reputation beyond reputeboomerguy has a reputation beyond reputeboomerguy has a reputation beyond reputeboomerguy has a reputation beyond repute
Default

If I knew that I could ride my motorcycle daily like I do my cars, I wouldn't sweat the 10% ethanol gas because I know it would turn-over quickly in my tank.

However, my daily schedule and the fluctuating weather keep me from riding it as much as I would like to and it may sit for weeks or months at a time. So I keep a 5-gallon can of non-ethanol in the garage to top it off with after each ride. I would rather have it sit completely full of non-ethanol, just in case.

I also turn off the Golan manual petcock about 100 yards from my house so the carb will run empty when I park it in the garage. Probably overkill, but it's easy to do and it gives me peace of mind.
Reply With Quote
  #1795  
Old 13th November 2019
Tomcatt Tomcatt is offline
Dazed & Confused
 
Join Date: Feb 2019
Location: Never Never Land
Posts: 827
Sportster/Buell Model: XL1200C
Sportster/Buell Year: 2017
Other Motorcycle Model: BMW R Nine T
Other Motorcycle Year: 2015
Reputation: 1085783
Tomcatt has a reputation beyond reputeTomcatt has a reputation beyond reputeTomcatt has a reputation beyond reputeTomcatt has a reputation beyond reputeTomcatt has a reputation beyond reputeTomcatt has a reputation beyond reputeTomcatt has a reputation beyond reputeTomcatt has a reputation beyond reputeTomcatt has a reputation beyond reputeTomcatt has a reputation beyond reputeTomcatt has a reputation beyond repute
Default

Quote:
Originally Posted by boomerguy View Post
If I knew that I could ride my motorcycle daily like I do my cars, I wouldn't sweat the 10% ethanol gas because I know it would turn-over quickly in my tank.

I would rather have it sit completely full of non-ethanol, just in case.

I also turn off the Golan manual petcock about 100 yards from my house so the carb will run empty when I park it in the garage. Probably overkill, but it's easy to do and it gives me peace of mind.
That's edited but I hope not out of context. If you're not comfortable with the current ethanol added fuels that's your prerogative.

I traded in a 2002 Kawasaki Mean Streak (that I bought new in 2002) on my Sportster in Feb this year, 2019. It had 9.5:1 CR and ran on regular. It sat 17 winters, plus 2 summers I couldn't ride due to surgeries and chemo, with regular "with up to 10% ethanol" in its' (full) tank. When I traded it in it still had all its' original fuel system components, the tank had never been off to be cleaned, the fuel system (EFI) had never been apart. No problems, ever.

I could go on but that is typical of my experience with ethanol added fuels. Racing on 100% methanol (and setting up carbs and fuel systems to flow enough) is a more fun story.
Reply With Quote
  #1796  
Old 13th November 2019
jcn59 jcn59 is offline
Biker
 
Join Date: Aug 2017
Posts: 65
Sportster/Buell Model: 1200
Sportster/Buell Year: 1994
Sportster/Buell Model #2: 1200
Sportster/Buell Year #2: 1994
Other Motorcycle Model: Aspencade
Other Motorcycle Year: 1986
Reputation: 437948
jcn59 has a reputation beyond reputejcn59 has a reputation beyond reputejcn59 has a reputation beyond reputejcn59 has a reputation beyond reputejcn59 has a reputation beyond reputejcn59 has a reputation beyond reputejcn59 has a reputation beyond reputejcn59 has a reputation beyond reputejcn59 has a reputation beyond reputejcn59 has a reputation beyond reputejcn59 has a reputation beyond repute
Default

I find that if I use non-korn-likker gas in my bikes, boats, lawn mowers and atvs, that come spring, everything starts right up & runs fine with no curse words or other issues. (Northern WI) I haven't noticed any other advantage. I suppose that if I jacked up the timing I might need the premium gas, but I don't.
__________________
Gone but not forgotten: RD 350 Yam, Kaw 3 cyl. 500, Kaw 900 Z1, 750 Honda SS, etc.
Reply With Quote
Reply

Bookmarks


Currently Active Users Viewing This Thread: 5 (0 members and 5 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump



Sponsored Links
All times are GMT +1. The time now is 09:36.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, vBulletin Solutions Inc.
XL Forum® - Linson Media LLC