octane gas you use
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Joined: Dec 2007
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octane gas you use
Being that the newer Harleys are fuel injected are most of you guys using a 91 or higher octane and if so are you getting your computer revamped for that level of octane to take advantage of some of the effects of using a higher octane?
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Elite HDF Member
Joined: Sep 2007
Posts: 4,541
Likes: 1
From: Nuevo México, Los Estados Unidos de América
RE: octane gas you use
All the newer models "require" at least 91. In the cold of winter at altitude maybe you could get away with less, but, yes you really need it: the TC 96 has a compression ratio of 9.2:1, sporties 9.7:1, you need the higher octane. In my neck of the woods (high desert/southern Rockies) it's hard to find over 91 grade fuel, some places the premium is still 90, so I don't use it: my compression ratio is 11.5:1 so I really need it. The advantage is no predestination with those higher compression ratios. It's cents more; you should use premium.
Elite HDF Member
Joined: Apr 2006
Posts: 3,823
Likes: 2
From: THE MARITIMES Canada
RE: octane gas you use
Like the guys above said; all Harley's require 91 or above. I've seen the results of burning regular gas (in some of the bikes that come into the shop. For the sake of a few pennies it isn't worth it)......stick to what your manual tells you
Road Master
Joined: Jul 2006
Posts: 862
Likes: 1
From: Western PA
RE: octane gas you use
Ialways use 93 octane unless it's not available. I also try to find older gas stations that have seperate hoses for each grade of gas. Think about it. If you buy your gas at a station that has 87.91, and 93 octane and it all comes from one hose, you are getting at least a half gallon of low octane gas before you get to the good stuff. Unless the person before you pumped premium. When pumping only three gallons this seems to make a difference.
Maybe I'm taking this too far but I really hate it when I hear the valves ping on a hot day.
Maybe I'm taking this too far but I really hate it when I hear the valves ping on a hot day.
Cruiser
Joined: Dec 2007
Posts: 197
Likes: 0
From: Baden, PA
RE: octane gas you use
I to am running 93 octane.
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Ultimate HDF Member
Joined: Jul 2007
Posts: 5,577
Likes: 138
From: South of Dallas Area, Texas
RE: octane gas you use
92 or 93 Whatever it takes.
This is premium in my area. I think next spring I might try a couple of tanks of the mid-grade which is 89
I sure dont want no predestination problems.
MikeM
This is premium in my area. I think next spring I might try a couple of tanks of the mid-grade which is 89
I sure dont want no predestination problems.
MikeM
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Joe Kucinski
Ultimate HDF Member
Joined: Dec 2006
Posts: 7,773
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From: Central Oklahoma
RE: octane gas you use
ORIGINAL: mariner227
Ialways use 93 octane unless it's not available. I also try to find older gas stations that have seperate hoses for each grade of gas. Think about it. If you buy your gas at a station that has 87.91, and 93 octane and it all comes from one hose, you are getting at least a half gallon of low octane gas before you get to the good stuff. Unless the person before you pumped premium. When pumping only three gallons this seems to make a difference.
Maybe I'm taking this too far but I really hate it when I hear the valves ping on a hot day.
Ialways use 93 octane unless it's not available. I also try to find older gas stations that have seperate hoses for each grade of gas. Think about it. If you buy your gas at a station that has 87.91, and 93 octane and it all comes from one hose, you are getting at least a half gallon of low octane gas before you get to the good stuff. Unless the person before you pumped premium. When pumping only three gallons this seems to make a difference.
Maybe I'm taking this too far but I really hate it when I hear the valves ping on a hot day.
Seasoned HDF Member
Joined: Jan 2006
Posts: 11,476
Likes: 3,004
From: Charleston, SC
RE: octane gas you use
ORIGINAL: severum17
92 or 93 Whatever it takes.
This is premium in my area. I think next spring I might try a couple of tanks of the mid-grade which is 89
I sure dont want no predestination problems.
MikeM
92 or 93 Whatever it takes.
This is premium in my area. I think next spring I might try a couple of tanks of the mid-grade which is 89
I sure dont want no predestination problems.
MikeM
Anyway...my bike pings like heck if I don't use 91. So I use 91..
lp