October 1st, 2011, 06:07 PM | #401 |
Jigglin' your Jiglets
Name: Sean
Location: San Jose, Ca
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I like to think that 91 tastes better than 87. Like Blue Moon vs. Coors. And I treat my girls right
In all honesty I've been using 87 but I think I'm going to switch back to 91 because I was getting better mileage with 91. I was also riding differently but I'd like to see if there is actually any change whether better or worse
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October 1st, 2011, 07:53 PM | #402 |
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/merged with main octane thread
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November 10th, 2011, 06:21 PM | #403 |
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Name: Alex
Location: Ottawa
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91 octane no ethanol (like shell v-power) or
87 with 10% ethanol ????? That is real question. |
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November 10th, 2011, 07:05 PM | #404 |
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Rhetorical question? Costs aside, non-alcoholic gas is always better. Yes, 91 octane alcohol-free gas is better than 93 octane 10%. And of course its better than 87 - 10%. Alcohol cuts the HP and chews up your petcock's membrane and O-rings.
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November 10th, 2011, 07:24 PM | #405 |
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Name: Jake
Location: MO
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Gas with ethanol is never good for any engine. They say newer cars aren't hurt by it, but I still avoid it if I can. I figure I ride a ninjette, I'm already doing my part for the environment.
And for the people who put premium in it to "clean" the engine, just throw some seafoam in there every once in while.
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January 29th, 2012, 10:47 PM | #406 |
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Selecting the right fuel: Octane explained....
This video explains octane in a very simple manner. It's not my video, but I thought I would share it with the community here. You may enjoy some of his other motorcycle videos too.
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January 29th, 2012, 11:21 PM | #407 |
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very imformative video headshrink
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January 29th, 2012, 11:23 PM | #408 |
ninjette.org sage
Name: Josh
Location: Lafayette Louisiana
Join Date: Aug 2011 Motorcycle(s): 2009 R6 Posts: 509
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I run 91. Always have. I'm with Matt on this one. The few cents extra per fill up is worth it.
I ran 87 once just to see if there was a difference. And it could have been my imagination but it seemed like it was harder to start the bike once it was already warmed up and it seemed to take longer to warm up than with the 91 octane. Only advantage was I did get about 4mpg more with the 87. But until I get to a point where spending an extra $.90 a week becomes a problem, my baby only gets the best!
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January 29th, 2012, 11:35 PM | #409 | |
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Quote:
However, I'm pretty sure all those "side effects" of 87 octane are all in your head. Just saying. |
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January 29th, 2012, 11:40 PM | #410 | |
ninjette.org sage
Name: Josh
Location: Lafayette Louisiana
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Quote:
btw +1 for saying Dino oil ha
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January 30th, 2012, 07:37 AM | #411 | |
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Quote:
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January 30th, 2012, 07:45 AM | #412 |
ninjette.org guru
Name: Charlie
Location: Wylie, TX
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Your bike will run best on what the manufacturer says it should be run on. Compression ratio and the presense / non-presense of forced induction are the dictators of how much octane an engine needs. An overdose of octane will do nothing to aid starting or warming up. It's primary job is to inhibit pre-detonation. If you're not experiencing spark knock while climbing a hill on a hot day, you're running the correct fuel.
On the other hand, overuse of octane likely won't hurt anything besides your wallet. It seems to make some people feel better because they think they're giving their bike 'the best', so I suppose there's no price you can put on peace of mind. I prefer to seek out sources of fuel that has a reputation for cleanliness & consistency. If the retailer doesn't appear on the list of Top Tier providers, I don't buy gas from them. |
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January 30th, 2012, 08:16 AM | #413 |
ninjette.org sage
Name: Josh
Location: Lafayette Louisiana
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I'll just make myself feel good about it and say that I'm stimulating the economy
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January 31st, 2012, 07:30 AM | #414 |
Russian Ninja :)
Name: Andrei
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I use ethanol-free 87 octane gas, and in the winter I add fuel stabilizer in it
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January 31st, 2012, 10:28 AM | #415 | |
ninjette.org guru
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Quote:
Without knowing anything about gasoline which one would you pick just going off the label. Premium of course. The fact is most people think premium is a higher quality of fuel when in acutality all the fuel at the service station is of the same quality. Some service stations will also only have two fuel tanks; 87 octane and 91, but sell 89. How do they do that? By mixing the 91 and 87 50/50, to get to the correct octang level and perfectly acceptable. The refiner would do that if it was easier. It's a sham, but they're making money off of people's gullibility. That's the new american way. |
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January 31st, 2012, 10:38 AM | #416 |
KThanksBye
Name: Kevin
Location: Orange County
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You can't say that there isn't a difference, there clearly is. On the 250 91 doesn't run well. On my zx it runs like **** on 87. The choice should be on what the bike wants and what it runs better on, nit what you think the numbers mean
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January 31st, 2012, 10:48 AM | #417 |
ninjette.org sage
Name: Steve
Location: Valdosta GA, US
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Manufacturers recommended fuel rating is normally correct for the stock application. By adding in major air induction/engine modifications fuel quality needs to be addressed.
I ran 88 octane initially which is mid grade in my locale then switched to 86. I have not had any problems with the 86 yet but will see come summer if the switch back to 88 is warranted. |
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January 31st, 2012, 12:36 PM | #418 | |
ninjette.org guru
Name: Jason
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Quote:
The "Octane Rating" is a measure of the tendency of gasoline to resist self-igniting using isooctane as the reference benchmark. So a gasoline with an octane rating of 87 will be equavelent in self-ignition resistance to a mixture of 87% octane and 13% heptane. But a higher octane rating does not equate to more energy in the fuel, cleaner burning, or inherently more performance. In modern cars with variable valve timing. Higher octane rating does equate to higher performance for the simple reason that the engine controller is changing the timing to prevent knocking. When running higher octane fuels the valve timing can be more advanced for a performance gain. I do not know of a bike that has variable valve timing. The 250 clearly doesn't. |
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January 31st, 2012, 01:47 PM | #419 | |
ninjette.org sage
Name: Steve
Location: Valdosta GA, US
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Quote:
All of these factors will determine the quality of fuel. I worked in Petroleum, Oil, and Lubricants (POL) during my time as active duty Air Force and part of the job was to quality check the JP-8, Diesel, and MOGAS along with storage tanks. Octane is the stability of the fuel during the combustion process which is documented as 2 C8H18 + 25 O2 → 16 CO2 + 18 H2O. Higher octane rating decreases the chance of detonation which for the most part is not a problem. In modern vehicles variable valve and spark timing will help to achieve combustion at the most opportune moment. Variable valve timing may increase performance over a wide rpm band by changing the lift and duration the valves are open. During the combustion process all valves are closed so the engine can achieve compression, now variable spark timing comes into play to achieve "perfect" combustion. Designed high compression engines or a modified engine using high compression/oxidizers running a lower octane fuel will be prone to detonation much like operation of a diesel engine. Additional factor is fuel temperature when introduced into the combustion chamber, higher ambient temp with lower octane fuel can also lead to detonation. Seeing how in my location I am already running below recommended fuel which has not been a problem in the fall/winter months but during summer when ambient temps are normally 100+ here in the desert leading to higher resting temp of the gasoline pre-detonation is something I have to keep a watch for. Another prime example is the difference of diesel fuel and the paraffin content between summer and winter. The ninjette will not benefit at all from running any higher octane fuel. |
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February 3rd, 2012, 08:09 AM | #420 | |
ex-ninjette.org guru :o
Name: Trevor
Location: Barrie, Ontario
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Quote:
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February 3rd, 2012, 08:11 AM | #421 |
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kamikaze try another washer, and normal 87 octane. That flat spot in the midrange (where the needles are in control) means your mix in the midrange isn't quite right
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February 3rd, 2012, 08:14 AM | #422 |
ex-ninjette.org guru :o
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I"ll try that in the spring. still have to tear it all apart to do a valve job and I'm waiting for it to warm up a tad. I'm pretty happy with how it's performing at the moment (well, when i put it away anyway.)
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February 3rd, 2012, 08:16 AM | #423 |
ex-ninjette.org guru :o
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February 28th, 2012, 08:18 PM | #424 |
ninjette.org member
Name: skip
Location: So cal
Join Date: Jan 2012 Motorcycle(s): 2009 250r Posts: 126
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What octane do you use
Do you guys pump tge 91 or the regular the label under the rear seat recomends a 91
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February 28th, 2012, 08:19 PM | #425 |
ninjette.org member
Name: skip
Location: So cal
Join Date: Jan 2012 Motorcycle(s): 2009 250r Posts: 126
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February 28th, 2012, 08:22 PM | #426 |
ninjette.org certified postwhore
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doesn't the manual recommend 87?
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February 28th, 2012, 08:26 PM | #427 |
ninjette.org member
Name: skip
Location: So cal
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February 28th, 2012, 08:32 PM | #428 |
#squid
Name: nickypoo
Location: Five Guys
Join Date: Jul 2011 Motorcycle(s): Track dedicated 2008 ZX6R Posts: A lot.
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The seat doesn't say to use 91 octane, it's the RON or Research Octane Number. Using 91 won't hurt your engine, but you'll just use more fuel, and receive the same power output. Look at page 29 in your owners manual. It can actually reduce your power, but it's to small to even be noticed. Depending on your elevation, you should use 87. However, if you're at a higher elevation, and you experience knocking or unusual noises from your engine, switch to a different octane or brand.
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February 28th, 2012, 08:36 PM | #429 |
Gear crash test dummy
Name: Max
Location: South Bay (So. Cal)
Join Date: May 2011 Motorcycle(s): 2010 Ninja 250 race bike, 2014 ZX-636r Posts: A lot.
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Damn that lawnmower sure has taught you a lot...
But seriously there's a cluster**** thread on this forum about octane already and you should definitely use 87, like the rest of us. |
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February 28th, 2012, 08:37 PM | #430 | |
#squid
Name: nickypoo
Location: Five Guys
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Quote:
Just don't use diesel
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February 28th, 2012, 08:38 PM | #431 |
Gear crash test dummy
Name: Max
Location: South Bay (So. Cal)
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You know a decent amount about what can be learned from reading, that is correct.
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February 28th, 2012, 08:41 PM | #432 |
#squid
Name: nickypoo
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Yeap. But I know what all that meant before I read it. I've spent lots of time with cars with my dad. He buys used cars and fixes them.
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February 28th, 2012, 08:48 PM | #433 | |
ninjette.org member
Name: skip
Location: So cal
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Quote:
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February 28th, 2012, 08:56 PM | #434 |
#squid
Name: nickypoo
Location: Five Guys
Join Date: Jul 2011 Motorcycle(s): Track dedicated 2008 ZX6R Posts: A lot.
MOTM - Jul '16
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It's not a dumb question
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February 28th, 2012, 09:16 PM | #435 |
Gear crash test dummy
Name: Max
Location: South Bay (So. Cal)
Join Date: May 2011 Motorcycle(s): 2010 Ninja 250 race bike, 2014 ZX-636r Posts: A lot.
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Just maintain it well. Change your oil and clean and lube your chain.
Not crashing also helps |
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February 28th, 2012, 09:35 PM | #436 |
Intrepid Adventurer
Name: Josh
Location: Rochester/Buffalo NY
Join Date: Jan 2012 Motorcycle(s): 2004 GSXR 750 , 71 cb350streettracker, 07 Polaris Predator 500 Posts: A lot.
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Ethanol is a fantasy renewable fuel source. ruins all the soft parts in my jet ski and atv carbs. Makes my air foolers run hot!
Evil stuff . Currently combating it with additive s and driving far far away in search of E free fuel. I am working on a conversion kit ! Make my ninja run on Bacardi 151. trying to keep it classy |
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February 29th, 2012, 12:57 PM | #437 |
ninjette.org member
Name: Ali
Location: Fresno, CA
Join Date: Feb 2012 Motorcycle(s): Kawasaki Ninja 250R Posts: 28
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In relation to this thread, yesterday was my first fill up for the tank and the first question that came to me at the gas station is what grade of gas should I use? Tried to look for the info anywhere near the tank but I was out of luck so I just went with the middle option and chose the 89. but last night I was trying to figure out how to hang a helmet to the bike so I take of the back seat and find a sticker at the bottom of it saying that I have to use a grade 91!!!
I will snap a picture and show to u guys!! |
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February 29th, 2012, 01:04 PM | #438 |
Motorcycle Hypermiler
Name: Vic
Location: Livermore CA
Join Date: Jan 2012 Motorcycle(s): 1999 & 2005 Kawasaki Ninja 250R's Posts: A lot.
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87 octane unleaded was recommended for my 1999 pregen so that is what I use. If you ever try to advance the ignition timing , i would consider using higher octane fuel.
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