Fuel
Road Warrior
Joined: Sep 2008
Posts: 1,557
Likes: 6
From: Fort Lauderdale, Florida
Okay first... I do use 91 octane fuel which is the highest octane I have around here. That said, Why do we need the higher octane fuel and if it is better then why do they even offer lower octane fuels at stations? And a friend asked if he could run e85 in his Harley I told him no but I am not sure. Also should I get something to boost octane if I have to fill up with a lower rating (a few stations around here only carry 89)
They offer 3 different octane ratings for people who are dyslexic. Some people look at a certain combination of numbers and see some other combination of numbers. To help minimize this, they put 3 series of number combinations to help minimize the chance that at least people with this disease will be able to see one of them.
Club Member
Joined: Mar 2009
Posts: 66,110
Likes: 51,396
From: Niles Canyon Ca.
I'd kill for easy access to 94, this crap they are passing off as 91 out here is a joke.
Extreme HDF Member
Joined: Dec 2007
Posts: 13,402
Likes: 941
From: Illinois
I run 87E10 unless I am in over 4,000 ft. elevation (Sturgis) then I use 85. I run the 87 in a 750, 1 883, 3 1200's, 2 TC88's, 3 previous 96's, 1 96, 2 103's, 2 103 HO's, 2 110's. All run strong and with a combined 30,000 miles a year none have ever pinged from ocean to ocean and from Key West to the Arctic Circle.
I do run iridium plugs, SE wires, less restrictive breather and stock exhaust. I treat the bike at 3,000 miles with Techron to remove combustion chamber build up. I used to mist water but Techron does the job with less work.
HD motors are low compression and long stroke push rod motors. Unless you increase the compression and install a high over lap cam, higher octane is a waste and in fact will foul the engine more and CAUSE pinging.
With that said I do only run 93 in my 13 Street Bob with the 120R in it. Once I get 3,000 miles on it I will see if I can drop down to 91 and then 89.
I do run iridium plugs, SE wires, less restrictive breather and stock exhaust. I treat the bike at 3,000 miles with Techron to remove combustion chamber build up. I used to mist water but Techron does the job with less work.
HD motors are low compression and long stroke push rod motors. Unless you increase the compression and install a high over lap cam, higher octane is a waste and in fact will foul the engine more and CAUSE pinging.
With that said I do only run 93 in my 13 Street Bob with the 120R in it. Once I get 3,000 miles on it I will see if I can drop down to 91 and then 89.
Last edited by lh4x4; Jun 22, 2015 at 07:28 PM.
Road Warrior
Joined: Jul 2009
Posts: 1,979
Likes: 2
From: Northern Colorado
I use mid-grade in my TC96 stage 1. If it was completely stock I would use premium just because of how lean and hot they run. I wouldn't use regular unless I had no other choice... even then I would put in just enough to get me to the next station haha!
Stellar HDF Member
Joined: Nov 2007
Posts: 2,121
Likes: 300
From: New Mexico-No, you don't need a passport.
I run as high an octane rating as I can get.
The bike will run on regular but it performs better on premium.
One of my cars has a 2 liter 300 horse 4 cylinder. You can really tell the difference in octane with that motor.
The bike will run on regular but it performs better on premium.
One of my cars has a 2 liter 300 horse 4 cylinder. You can really tell the difference in octane with that motor.
Banned
Joined: Mar 2012
Posts: 11,232
Likes: 16
From: Socialist Republic of the USA
Interesting. I haven't seen 94 since Sunoco use to carry it as their ultra. That has been quite a few years.
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Club Member
Joined: Feb 2007
Posts: 2,404
Likes: 12
From: Haymarket, VA
One doesn't have to be a paying member of AMA to support their being. They're an essential Watch Dog group supporting motorcyclist, who all should be aware and supportive of. Just sign into their email and learn what the gov is pushing through that needs to be addressed with rebuttal for obvious reason.
The lobbyist that introduced w/o challenge, sustain and progressively voice increased Ethanol mixture into gasoline is just an unbelievable example.
http://www.americanmotorcyclist.com/...orthought.aspx
The lobbyist that introduced w/o challenge, sustain and progressively voice increased Ethanol mixture into gasoline is just an unbelievable example.
http://www.americanmotorcyclist.com/...orthought.aspx
If you're not a member, please join. They have a really good mag also.
