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+--- Thread: What octane fuel you using? (/showthread.php?tid=6186)
RE: What octane fuel you using? - AZrider_imp - 07-08-2013
(07-08-2013, 06:50 AM)Deanohh_imp Wrote: I have thoroughly examined every circuit in the wiring diagram, read every word in the service manual, reviewed every photo of engine assembly and disassembly, searched the cylinder block for a little microphone, received a message from God, and on top of that I know everything. Now you prove to me that it has one.
Deanohh- I have proof positive but my dog ate the proof. I had a beautiful picture of it. It's located just under and to the right of the muffler belt on my bike. Your location may vary from state to state and country to country.
RE: What octane fuel you using? - Houtman_imp - 07-09-2013
Since owning Honda CBX from the mid eighties I have always bought main brands 93 octane gas.I also use this in my riding lawn tractor and other lawn equipment and pressure washer.I always have my bikes and equipment start and run very well and will continue to use this,hopefully there are more/better aditives in that gas but perhaps not.Some one once told me that I was wasting money but I told him,do not worry ,I am wasting my money and not yours!
I have been using 93 in all the many bikes I have owned over the years and I am now using it in my CB1100.
RE: What octane fuel you using? - degenex_imp - 07-09-2013
Hey guys, here are my thoughts about the "octane discussion" in our case, the CB. Octane does not dictate the flame propagation speed all that much, but the resistance of the fuel to vaporize and mix with air, becoming a burnable substance. Higher octane fuels have more resistance to mix into air and therefore burn. Using significantly more octane than an engine is calibrated to utilize, like 110LL in your mower will make it a little more difficult to start on really, really, cold days. It will also make less torque, fuel makes torque, RPM makes horsepower. Also timing makes torque....and so on. The perfect amount of ignition lead is when the fuel/ air mix burns with flame propagation that is even and controlled and peak pressure happens just after TDC. Too little octane (or too much ignition lead) causes knock, the fuel/air mix to burn to early and peak cylinder pressure happens before TDC. This causes the cylinder to ring at a frequency that is directly proportional to the bore size due to the rapid rise and fall in cylinder pressure.
So to sum it up, the V.E. tables and ignition lead on the CB are are conservative enough for E10 gas....it just doesn't matter. Just my two cents. Mine does get premium if the wife and I fill up on the same pump. She has a higher compression engine that requires it.
RE: What octane fuel you using? - the Ferret - 07-09-2013
Dayum..that was like reading Kevin Cameron's articles in Cycle World. I get about 4 lines in and my eyes glaze over and my mind shuts down, and although I keep reading I have no idea what I just read lol
RE: What octane fuel you using? - Lord Popgun - 07-10-2013
Man, I love Cameron's tech articles. That guy does know how an engine works!
RE: What octane fuel you using? - Yoyodyne_imp - 07-11-2013
(07-10-2013, 09:33 PM)Lord Popgun_imp Wrote: Man, I love Cameron's tech articles. That guy does know how an engine works!
Speaking of which, he just wrote an interesting article on ethanol fuel:
http://www.cycleworld.com/2013/07/05/everything-you-need-to-know-about-ethanol-fuel-and-your-motorcycle/?cmpid=enews071113&spPodID=020&spMailingID=5569584&spUserID=Mjg1MjY5NjM1MDMS1&spJobID=325054972&spReportId=MzI1MDU0OTcyS0
RE: What octane fuel you using? - 2013 CBXX_imp - 07-27-2013
Had best results with shell med grade. No knocking ever but bike seams sluggish
with cheap reg none branded unleaded from Murphy, H.E.B. or Kroger....
RE: What octane fuel you using? - Deanohh_imp - 07-27-2013
Cars yes, cb1100 no.
I wish people would stop making stuff up and presenting it as true without having any basis in fact or knowing anything about what they are talking about.
RE: What octane fuel you using? - Yoyodyne_imp - 07-27-2013
(07-27-2013, 01:31 PM)Deanohh_imp Wrote: Cars yes, cb1100 no.
I wish people would stop making stuff up and presenting it as true without having any basis in fact or knowing anything about what they are talking about.
But that would be the death knell for the Internet!
RE: What octane fuel you using? - bubblerboy64_imp - 07-29-2013
OK, While we're on the subject of gasoline. What's the predominant opinion on gas additives. It's my understanding that the Ethanol products degrade rather quickly (measured in weeks not months) True or un-true?
Seems like the shelfs are full of the stuff. Do we need it what to buy? I have a bunch of bikes so they don't get used enough and do sit. My experience the bikes which fuel injection seem to take to this without too much trouble but I am concerned about the quality of gasoline now and into the future.
I've used stabel over the winter and a battery tender with no problems.
I did pick up a bottle of ethanol stabilizer (do not remember what brand) haven't used it. Just wondering.
On an aside. I did buy a bike BMW bike from a fellow who had access to Aviation Fuel. The bike did seem to run a bit better on that gasoline.
Back to the question. Do we need ethanol 'treatments" over the summer riding season?