| Author | Message | ||
     Sparky |
In addition to what FMJ said, "made to burn SLOWER", the other part of the equation is it's formulated to resist detonation as the flame front travels through the combustion chamber. Ref wiki. There is some evidence to support using higher octane may reduce performance in this article on race engines, 8th paragraph down. However for production engines, many Google articles say there is no detriment except to the wallet. | ||
| Djkaplan |
Read the link. The only part I found intriguing was this statement... "Obviously, if the engine does not have proper compression to provide high combustion and temperature, then the octane fuel will not burn completely, resulting in power losses." Not sure that's true, but if it were, it would explain why octane could hurt power. Not agreeing or disagreeing (yet), still on the fence. Oh, for an evening with Kevin Cameron! | ||
| Fullpower |
tomd: you quite likely have an ignition timing issue. i strongly recommend that you set the timing correctly. the procedure is detailed in the service manual.in lieu of the "digital technician" you can use a voltmeter at pin 3 on the grey ecm connector. yes, you CAN adjust your ignition timing, and NO your stock compression Buell should NOT ever require race gas. on a related note: the octane rating units used in Europe are NOT the same measurements use in the states. different units. USA 87 octane is similar to Europe's 95 octane. | ||
| F1johny |
Anyone seen this before? http://www.reevu.com/index.asp F1 | ||
| Mikej |
What happens if you raise the visor some? What happens if a following car or bike has their high beams on? It will be interesting to see real reviews of this system once people start using it. | ||
| Bomber |
Oh, Boy, no one, but NO ONE should ever let me or Road_thing try one of those things out -- the flashbacks would be entertaining, but, er, dangerous for both ourselves and innocent standbys | ||
| Road_thing |
Oh, wow, man...  rt | ||
| Buellzebub |
now that's a flashback! haven't seeen the triple f bros. in years | ||
| Bigblock |
AAAAH! The fabulous Furry Freaks themselves. It seems I should remember something about them... umm, uh, what was I saying? | ||
| Ocbueller |
Keep on Truckin' | ||
| Rocketman |
on a related note: the octane rating units used in Europe are NOT the same measurements use in the states. different units. USA 87 octane is similar to Europe's 95 octane. FP, I thought that might be the case but Googling didn't find me anything to say so when I searched earlier. Thanks for that. When we speak of higher than recommended octanes used possibly preventing power, can we assume this means that Super Unleaded blends (like Shell Optimax) AREN'T relying on octane boosting then, because these types of fuel CAN and DO produce more power / performance in many a given engine despite this or that engine being of ordinary performance? Rocket | ||
| Yardbird |
Freewheelin Franklin, Fat Freddy and Phineas the Freak - man - next you'll be talking Dirty Duck! I gotta go see if I still have some tiedyed shirts somewhere. And a Honda CL450 with pegs and a sissy bar. Nice memories of days gone by....... Thanks...Yardbird | ||
| Djkaplan |
I still can't find any credible evidence anywhere that supports 93 octane gasoline hurting power in an engine that runs fine on 87 octane. Lots of opinions and theories, though. Still on the fence. | ||
| Southern Marine |
Court, I dropped you a gmail, could you check it out and please get back with me. Thank You As for everyone else, Semper Fi, about two more months and I'll be home.  Ya'll take it easy and if you can get out and ride, enjoy one for me. | ||
| Crw |
"In most countries (including all of Europe and Australia) the "headline" octane that would be shown on the pump is the RON, but in the United States and some other countries the headline number is the average of the RON and the MON, sometimes called the Anti-Knock Index (AKI), Road Octane Number (RdON), Pump Octane Number (PON), or (R+M)/2. Because of the 10 point difference noted above, this means that the octane in the United States will be about 4 to 5 points lower than the same fuel elsewhere: 87 octane fuel, the "normal" gasoline in the US and Canada, would be 91 in Europe." http://en.wikipedia.org/wiki/Octane_rating | ||
| Iamike |
Mr. Lassiter - Thank you for all that you are doing for us. Make sure that all of your comrades understand that those of us that understand the real meaning of freedom are behind you 100%. Keep your head down, be safe, and I hope that we can ride together sometime in the future. | ||
| Southern Marine |
Thanks Mike, we appreciate the support. Everyone, Ya'll have a Happy Thanksgiving. | ||
| Jerry_haughton |
Southern Marine: what IAMike said. FB&D | ||
| Court |
E-mail received and I responded. I fire it off again, in the event it didn't make it. Happy Thanksgiving. . . tell teh boys wer are thinking of them. Court Semper Fi (USMC 1973-1974) | ||
| Prior |
Happy Thanksgiving everyone! | ||
| Rex |
Happy Thanksgiving....Jeremiah our younger son is out of the Marines and had his first Thanksgiving with family since he had been in for 4 years. Very happy Day! REX | ||
| Chauly |
There is definitely an octane that is best for any given engine. I run 87 in my ST1100, 89 in my S-3 and my KTM. The DR-350 will burn kero if I start it on gasoline... oh, wait, that was a Gravely I once owned... The obvious clue is pinging or rattling (Very Bad), but the second is mileage. My ST will get 50 mpg on 87, 45 on 89, and 42 on 91. Guess where my money goes? Any idea what octane Honda used in their RC166 250 cc GP bike (six cylinders!)? 65; any higher it would misfire over 15,000 rpm (redline @ 22,000) | ||
| Iamike |
Wouldn't the best octane be the lowest that you could run without pinging? A slower burn with a too high of octane may send unburned fuel out the exhaust? I had a 4-cyclinder mini-van that pinged on 87 octane (suggested by the owners manual). After checking timing and everything else, and being the cheapskate that I am, I decided to try a colder spark plug. Not only did it quit pinging but the gas mileage went up about 2mpg. | ||
| F1johny |
Well, the IMS hit Seattle this weekend, and golly I got my Tshirt, the Uly looks great, the MV Augusta's were way sweet, the rest kinda sucked. 2 pennies worth | ||
| Rocketman |
That's weird. A whole week has passed since someone last posted on the GDB. That's a first. Are we that talkative in other threads these days that the GDB takes a back seat? Maybe we don't have much conversation left in us for 'generalizing'? Or is it perhaps the shift of contributors and their loyalties that leaves the GDB a quiet place? Hey, maybe it's just one of those freak times, and nuthin's wrong at all. Yeah, that must be it. Rocket | ||
| Davegess |
So Rocket how's it goin'? Are you planning on taking in the TT in 2007 the 100th? I would love to do it, can't see how I can afford to, the bike rental alone is easily $1000. Dave, just injecting life in the old GDB | ||
| Rocketman |
Hey Dave, less of this idle chit chat. I'm too busy talking in other threads! Oh the TT 100th. Sounds great. I've never been so that would be a great start. You make it and I'll find you a bike to ride for free. Rocket | ||
| Rex |
Just released photos from the American Sport Bike Night Anniversary Meeting......Lots of old friends...REX http://www.pbase.com/jvv/dec2005 | ||
| F1johny |
Thread this! ahahaha na, people got bored to much talking about non bike stuff. I keep reminding myself not to post my feelings and just ride but golly I think people got turned off after ten pages of god bless the marine corps even if we all know they rock but what ever. http://www.mdna.net/kooks.html hehehe | ||
| F1johny |
PS That 20k beemer HP2 I saw at the show was the biggest rip off ever! You gotta be kidding that thing is the G Wagon of bikes. I bet Snoop would give that the fo no schizzle my wizzle. I can hear em rumblin..... |
