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
0 OEM front brake pads vs EBC double h
Last Post: wedge
Posted On: 10 Minutes Ago
Replies: 15
Views: 323
0 White Letter Tires
Last Post: Maxeffort
Posted On: 10 Minutes Ago
Replies: 20
Views: 7,438
0 C.O.B.B. CBD oil
Last Post: sprink
Posted On: 13 Minutes Ago
Replies: 14
Views: 333
0 This is gonna hurt.
Last Post: Stairman
Posted On: 1 Hour Ago
Replies: 7,823
Views: 1,578,535
0 Roads I'd like to ride.
Last Post: Stairman
Posted On: 1 Hour Ago
Replies: 2,562
Views: 218,986
4 The no-debate OIL POLL
Last Post: boomerguy
Posted On: 1 Hour Ago
Replies: 269
Views: 69,584
0 Food porn
Last Post: Stairman
Posted On: 2 Hours Ago
Replies: 1,673
Views: 289,936
0 low fuel light
Last Post: Folkie
Posted On: 2 Hours Ago
Replies: 3
Views: 76
0 Hottie of the day, no nudity.
Last Post: trainman
Posted On: 2 Hours Ago
Replies: 14,982
Views: 1,416,175
0 “Super Quiet” or “Interconnected” exhaust
Last Post: Coz
Posted On: 2 Hours Ago
Replies: 6
Views: 256
0 This week on Craig's list
Last Post: GA_Ironhead
Posted On: 3 Hours Ago
Replies: 4,450
Views: 543,731
0 Powerraythor conversion
Last Post: ferretface
Posted On: 4 Hours Ago
Replies: 3
Views: 232
5 HAMMER vs NRHS vs S&S Conversion Kits
Last Post: Highly-Dangerous
Posted On: 4 Hours Ago
Replies: 77
Views: 5,645
0 *DK Custom-Veterans Day Gratitude-Free Shipping & International Savings!*
Last Post: DK Custom
Posted On: 4 Hours Ago
Replies: 2
Views: 68
0 Younger Bike
Last Post: andy_t
Posted On: 4 Hours Ago
Replies: 16
Views: 493
0 Rush or Khromewerks slip ons?
Last Post: 60Gunner
Posted On: 4 Hours Ago
Replies: 54
Views: 2,177
0 opinion time (bike broke again)
Last Post: lostNdallas
Posted On: 5 Hours Ago
Replies: 6
Views: 140
0 Sportster Crankcase Pressure / Engine Breathing / Wetsumping and Mods
Last Post: bustert
Posted On: 6 Hours Ago
Replies: 853
Views: 33,553
0 Sportster Tacho
Last Post: SLW210
Posted On: 6 Hours Ago
Replies: 7
Views: 162
0 ....1
Last Post: Graywolf
Posted On: 7 Hours Ago
Replies: 4,999
Views: 296,120
0 Which Battery?
Last Post: SLW210
Posted On: 7 Hours Ago
Replies: 43
Views: 13,777
3 Shaky Dave Recovery
Last Post: rokytnji
Posted On: 7 Hours Ago
Replies: 50
Views: 7,565
0 Official XL Forum Random Image Thread (NO NUDITY!)
Last Post: Stairman
Posted On: 8 Hours Ago
Replies: 45,482
Views: 7,179,236
3 Wtb, Wts, Wtt, Wtg (Ironhead)
Last Post: bill smith
Posted On: 10 Hours Ago
Replies: 55
Views: 240,392
0 Keep & Kill
Last Post: Crusty
Posted On: 10 Hours Ago
Replies: 14,288
Views: 802,984
0 What weight oil?
Last Post: brianbbs67
Posted On: 15 Hours Ago
Replies: 13
Views: 545
0 Grüezi aus der Schweiz
Last Post: brianbbs67
Posted On: 15 Hours Ago
Replies: 12
Views: 545
0 How much is a late 60's early 70's Sportster worth?
Last Post: brianbbs67
Posted On: 15 Hours Ago
Replies: 10
Views: 724
0 Share your Man Cave Garage ideas
Last Post: NGOT8R
Posted On: 15 Hours Ago
Replies: 28
Views: 554
0 1974 35mm fork boots
Last Post: brianbbs67
Posted On: 16 Hours Ago
Replies: 3
Views: 209
More...
Members Birthdays
View Poll Results: What grade gasoline do you use?
Premium Gas 91+ octane 3,706 81.95%
Mid-Grade Gas 89-90 octane 310 6.86%
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: 4522. You may not vote on this poll

Sponsored Links
Reply
 
Share Thread Tools Display Modes
  #1791  
Old 1 Day Ago
Tomcatt Tomcatt is offline
Dazed & Confused
 
Join Date: Feb 2019
Location: Never Never Land
Posts: 593
Sportster/Buell Model: XL1200C
Sportster/Buell Year: 2017
Other Motorcycle Model: BMW R Nine T
Other Motorcycle Year: 2015
Reputation: 667429
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; 1 Day Ago at 19:26..
Reply With Quote
Sponsored Links
  #1792  
Old 1 Day Ago
boomerguy boomerguy is offline
XL FORUM TEAM MEMBER
 
Join Date: May 2018
Location: Rural area in SW Virginia
Posts: 528
Sportster/Buell Model: XL883 Standard
Sportster/Buell Year: 2005
Reputation: 1379456
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 1 Day Ago
Tomcatt Tomcatt is offline
Dazed & Confused
 
Join Date: Feb 2019
Location: Never Never Land
Posts: 593
Sportster/Buell Model: XL1200C
Sportster/Buell Year: 2017
Other Motorcycle Model: BMW R Nine T
Other Motorcycle Year: 2015
Reputation: 667429
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 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; 1 Day Ago at 19:48..
Reply With Quote
  #1794  
Old 1 Day Ago
boomerguy boomerguy is offline
XL FORUM TEAM MEMBER
 
Join Date: May 2018
Location: Rural area in SW Virginia
Posts: 528
Sportster/Buell Model: XL883 Standard
Sportster/Buell Year: 2005
Reputation: 1379456
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 23 Hours Ago
Tomcatt Tomcatt is offline
Dazed & Confused
 
Join Date: Feb 2019
Location: Never Never Land
Posts: 593
Sportster/Buell Model: XL1200C
Sportster/Buell Year: 2017
Other Motorcycle Model: BMW R Nine T
Other Motorcycle Year: 2015
Reputation: 667429
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 22 Hours Ago
jcn59 jcn59 is offline
Biker
 
Join Date: Aug 2017
Posts: 64
Sportster/Buell Model: 1200
Sportster/Buell Year: 1994
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: 1 (0 members and 1 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 21:21.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, vBulletin Solutions Inc.
XL Forum® - Linson Media LLC