Poll: What fuel do you run in your Superhawk?
 

So I'm curious to know what you guys run in your SuperChickens. So let's see what people run.
Edit: It appears what is posted under the seat is 91 RON, which is equivalent to 87 grade here in the US.

87

i used to be all "91 or 93 if you got it" and then i did some reading. there is no real gains to be had with a higher octane on our motor due to the very low compression. 87 is the shit. stop wasting money on the other stuff

87

Oh, and I ran two tanks of 87, getting 41mpg on both, and I am now going to try 91 out.
We'll see. I kinda felt like I was getting a smoother idle with the 91.

the whole thing...
 

It doesn't just say 91; its 91 RON min. Makes a difference here in the US.

http://en.wikipedia.org/wiki/Octane_rating


87 is sufficient here in the US as a R+M/2; but since I often lug the beast, I run 89. Whatever. It's like oil. Or tires.

Yeah, we recently discussed this in depth here. Tried and proven in 3 local 'Hawks including my own that 87 gets the best mileage and runs just as well as the other stuff.

I run premium (92 or 93 here in NW Ohio).. Its only 20 cents more a gallon compared to 87.. Plus my car "requires" premium, so I just run it in both.

I run 89. I haven't seen any gains with 93.

91 RON (Europe) = 87 octane (US)

Makes perfect sense. Riding my 'hawk requires me to wear a helmet, so I just wear it while driving my car too.

oh boy

My car runs diesel...

Anywho, don't lug the beast, let her breathe. Run it above 4k rpms and you might see better fuel mileage. Anything over 5 is diminishing returns. My buddy noticed it with his sv650 as well.

No shit, how many stupid fuel and oil threads do we need.

:popcorn:

I run VP race fuel with two bottles of octane booster per liter... nothing but the best for my baby. :p
https://www.superhawkforum.com/forum...8&d=1250138837

I run 93 octane only because I have high compression pistons and she won't run good with lower octane. Before I installed them I ran 87 with no ill effects.

93 when I'm not running bio-fuel derived from my smoker drippings:)

i tried 89 and the bike wasn't doing very good at all, not very crisp on revs and acceleration and had hard time at idle. Died at red lights a couple times.

I ran 91 because I thought that's what I was supposed to used. So I switched to 87. Right away I had problems starting the bike. after a few tankfuls, Went back to 91...start up problems went away.

Makes NO SENSE, since LOWER octane fuel should ignite easier than higher octane fuel. So the 87 octane should have started the engine easier than the 91...

Anyone have any idears?

Gal Darnet... I thought I read in my haynes manual that the bike needed 91 (R+M)/2... and I was sure of it. I thought half you folks were nuts. But there were so many posts saying that the bike was spec'd there so I checked it out... and I was wrong... 87 it shall be so long as I don't get knocking from the bike.

I double on the higher gas mileage at closer to 4k rpm. I started driving with cars that would get great gas mileage if you lugged them about but I definitely got ~6-8mpg better by sitting at a higher rpm on the bike. I haven't been pushing it to 4k on average though, more like 3.5k. Maybe I will try it out for a tankful!

Sorry folks... I just felt like keeping the 100th thread on gas octane alive. Just felt like it deserved it since it proved me wrong.

the fuel i use is 94 octane from petro-canada

i could be wrong but on 91 you will run a little rich since the octane causes the fuel to not completely ignite. if you then rejet for 91 and mods and you switch to 87 you will run slightly lean and this can aggravate a pre-existing condition.

The octane of the fuel has nothing to do with how "easily" it ignites, since ignition is started by a spark.

Higher octane prevents detonation, which is a condition where 2 flame fronts collide eventually blowing a hole in your piston. The second flame front is not caused by the spark, but by a hot spot in the combustion chamber, like the edge of an exhaust valve.

Since the SuperHawk has only 9.5:1 stock compression, 87 octane is Honda's recommendation. Some new cars with direct injection can run on 87 with up to 11:1 or more compression, since direct injection provides a cooler charge.

Octane of gas in the 1920s was 60 to 70, but a Model A Ford had only 4:1 compression.

Running a tank of 91 octane in the Superhawk, and I notice a severe lack in power. The motor is not nearly as responsive. I shall continue to run 87 octane.

Have you tried additive? I just run this stuff straight, engine is super quiet due to the hydrolocking compound they use.

http://www.nacd.net/images/foodsilverweb.jpg

i run 93 in everything i own, its gotta b lil better since it cost more haha i get better mpg on 93 and its j/ money ha

89 E10

for those that dont know thats 10% ethonal... cheaper than 87 regular here in Nebraska... more power but less mileage because of the ethonal...

I think everything in California is E10 now, or close to it. Interesting that it's cheaper for you, because it costs more to produce.

I'm definitely not an expert and could very much completely wrong... but I'm guessing it has to do with there being no oil refineries in nebraska, and a lot of ethonal plants... cheaper to produce than to truck in the gasoline...

I voted race fuel, because there was no option for 100LL. I only run avgas in mine unless i'm out on a long ride away from home and then will use 93.