September 18th, 2011, 11:10 AM | #361 |
ninjette.org sage
Name: Steve
Location: Valdosta GA, US
Join Date: Jul 2011 Motorcycle(s): 2012 Ninja 250, 2006 Ninja ZX6R-636 Posts: 661
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I use 88 octane which is mid-grade in my location. The breakdown of ratings where I live at is 86, 88, and 90.
I don't believe in the hype regarding premium in normal street vehicles unless it's called for by the manufacturer. Race vehicles and fuel is a different topic. |
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September 19th, 2011, 01:32 PM | #362 |
1/4 English, 3/4 Kick Ass
Name: Jeremy
Location: Dayton, OH
Join Date: Sep 2011 Motorcycle(s): 2002 Triumph Speed Triple 955i, '05 Suzuki SV650S(retired), '11 Ninja 250R(sold) Posts: A lot.
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I use 87 from BP, Shell, Marathon, and Chevron. No issues so far.
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September 21st, 2011, 08:33 PM | #363 |
ninjette.org member
Name: CJ
Location: Las Vegas NV
Join Date: Sep 2011 Motorcycle(s): 2009 Ninja 250R, 2009 CRF230L, 1998 Honda VT1100c, 1974 Honda XL100, 07 Yamaha Wolverine 350, 06 ArticCat 250 Posts: 43
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Depends on where I am at
In CA I go 87 since it is like $100,000,000 and first born, kidney, and left.... well you get the idea. In NV or another less expensive area I run 91 but or 89. I run the bike hard soooooo... And why not treat the gal to a fine taste of octane.
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September 21st, 2011, 09:39 PM | #364 |
Winging It In Life
Name: Umar
Location: SoCal
Join Date: Aug 2011 Motorcycle(s): 2010 250R; 2011 250R (sold) Posts: A lot.
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Though I mentioned earlier that I plan on sticking with 91, after reading some posts through this relatively old thread, I decided to go with 87 octane. What's the point of spending the extra 10-20 cents if it provides no benefit?
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September 22nd, 2011, 04:42 AM | #365 | ||
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Quote:
Quote:
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September 22nd, 2011, 05:50 AM | #366 | |
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FYI, the higher the octane rating, the SLOWER the burn - which translates to poorer performance. The only reason to use higher octane rated gas is to prevent predetonation and pinging in the engine. I've personally never heard of a modern engine having that problem and certainly not the Ninja.
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September 25th, 2011, 08:31 PM | #367 |
ninjette.org newbie
Name: Ben
Location: Kissimmee, Fl.
Join Date: Sep 2011 Motorcycle(s): 2008 Kawasaki Ninja 250r Posts: 5
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I've always ran 93 in my 250. Would there be any problem switching it to 87 now?
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September 25th, 2011, 08:57 PM | #368 |
That rider dude.
Name: Eric
Location: Orlando, Fl.
Join Date: Apr 2011 Motorcycle(s): 2011 White Ninja 250 SE. Posts: A lot.
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I was reading the manual right now at work, thinking of this thread. Although the guy told me get 93 octane (not happening) my manual says min of 87 octane. so when I fill her up, 87 it will be.
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September 25th, 2011, 09:21 PM | #369 |
meow?
Name: kevin
Location: I.E. SoCal
Join Date: Feb 2011 Motorcycle(s): 2004 636 Posts: 587
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just to recap so other newbies barely seeing this thread for the first time know whats going on
HIGHER OCTANE DOES NOT EQUATE TO BETTER PERFORMANCE if you dont know what "octane" means, shut your trap /close thread |
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September 25th, 2011, 09:25 PM | #370 |
ninjette.org guru
Name: Andrew
Location: Cleveland TN
Join Date: Jul 2011 Motorcycle(s): 2009 Kawasaki Ninja 250R Red Posts: 316
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I run 93 octane 100% gasoline no ethanol. Also twice a month I use elixer treatment to keep deposits down.
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September 25th, 2011, 09:30 PM | #371 |
ninjette.org guru
Name: Andrew
Location: Cleveland TN
Join Date: Jul 2011 Motorcycle(s): 2009 Kawasaki Ninja 250R Red Posts: 316
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Switching from 93 to 87 shouldn't give you any problems but you should go to your local shop and get some ethanol treatment unless you run 100% no ethanol
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September 26th, 2011, 01:15 AM | #372 |
CBR? This is ninjaaaaaa!!
Name: Michael
Location: Victoria, Australia
Join Date: Sep 2011 Motorcycle(s): '97 ZZR250 Posts: 40
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I run regular 91, then a full tank of premium 98 octane, then regular 91, then a full tank of premium 98, and so on...
Apparantly the premium fuel i use (BP ultimate) has some engine cleaners in it to break down carbon deposits within the engine and prevent build up. |
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September 26th, 2011, 02:19 AM | #373 |
ninjette.org sage
Name: Michael
Location: Belgium
Join Date: Apr 2011 Motorcycle(s): 2008 Ninja 250r, Fazer8 Posts: 580
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I ride 95 all the time, can't get anything with less octane in Belgium. No problems at all.
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September 26th, 2011, 04:55 AM | #374 | ||
ninjette.org certified postwhore
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Quote:
Quote:
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September 26th, 2011, 05:58 AM | #375 | |
ninjette.org certified postwhore
Name: D
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I don't think that Ninjas have catalytic converters, so you could run leaded fuels in it if you wanted. Your local neighborhood municipal airport probably sells 100 octane low lead. But the octane is so high, I would have reservations as to whether it would run very well in a Ninja. I suspect it would be like giving your bike a xanax. If I remember correctly from chemistry class, pure octane only has an octane rating of about 60. Higher octane ratings means there are contaminants in there that mess with the burn rate.
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September 26th, 2011, 08:45 AM | #376 |
ninjette.org sage
Name: Marc
Location: Crawfordville, Florida
Join Date: Jan 2010 Motorcycle(s): 2005 Suzuki S50, 2006 Kawasaki Ninja EX250F, 1990 Honda PC800, 2000 Yamaha TW200 Posts: 848
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It absolutely baffles me how many people, despite all the excellent advice they get from those with more knowledge and backed up by scientific evidence, hold on to their beliefs no matter what, in this case that high octane gas in a low compression engine (like in the Ninja 250) is better than regular gas, and that higher octane fuel has more additives to keep the engine clean, etc, etc. It's just like with climate change, global warming, evolution, taxing the rich will destroy jobs, tax cuts to the wealthy and big corporations will benefit the middle and lower class, corporations are people, no ATGATT is freedom of choice, etc, etc, etc.
Use what you want, believe what you want, despite what you are told. My advice - do some reading, like the 376 posts in this thread or on the internet and get informed, instead of just espousing an opinion or anecdotal story that has no validity or merit. It's time for this thread to die an aged death. |
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September 26th, 2011, 08:48 AM | #377 |
ninjette.org certified postwhore
Name: Jason
Location: Jacksonville, Florida
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Ummmm Marc.... Could you tell us how you really feel? Lol
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September 26th, 2011, 09:05 AM | #378 |
ninjette.org certified postwhore
Name: D
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I'm curious what model of Ninja 250 had a low compression engine. All of the specs I have looked at show the compression ratio at about 12:1.
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September 26th, 2011, 12:33 PM | #379 |
ninjette.org sage
Name: Michael
Location: Belgium
Join Date: Apr 2011 Motorcycle(s): 2008 Ninja 250r, Fazer8 Posts: 580
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looked it up, it's RON, so actually we're running the same
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September 26th, 2011, 12:39 PM | #380 |
ninjette.org dude
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I don't think so, US uses (RON+MON)/2, or AKI. Info here:
http://en.wikipedia.org/wiki/Octane_rating Your 95 is roughly equivalent to our 91.
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September 26th, 2011, 03:45 PM | #381 |
ninjette.org sage
Name: Marc
Location: Crawfordville, Florida
Join Date: Jan 2010 Motorcycle(s): 2005 Suzuki S50, 2006 Kawasaki Ninja EX250F, 1990 Honda PC800, 2000 Yamaha TW200 Posts: 848
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The compression ratio for the Ninja 250-250R ranges from 11.6-12.4 / 1, depending on the year (earlier is less), so my bad on that point as to being a low compression engine, but still, the recommended grade of fuel for all of these, from Kawasaki, is regular 87 octane. If your engine is pinging or subject to pre-ignition, a higher octane fuel can suppress this or make it disappear, but you are only masking a symptom, not curing a problem and you have to look for correcting timing issues, a wrong plug, carbon deposits, etc, causing this and not just changing to a higher octane fuel. You can mask the problem by switching to a fuel which burns slower, that also robs you of power. Rejetting or shimming needles doesn't require higher octane, you are just letting in more fuel doing this, higher octane fuel will still ignite and burn slower.
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September 26th, 2011, 04:37 PM | #382 |
ninjette.org member
Name: Jeff
Location: PA
Join Date: Apr 2010 Motorcycle(s): 08 R6 Posts: 224
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When I had my ninja 250 I always put in 87. With my R6 I put in premium usually 91
My STI however is very picky with gas and anything under 93 it does not like |
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September 26th, 2011, 05:17 PM | #383 |
ninjette.org sage
Name: Jon
Location: Usa
Join Date: Jan 2010 Motorcycle(s): magHitVE Posts: 649
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I put 99,9953 % alcohol in my bike, is that bad ?
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September 26th, 2011, 06:05 PM | #384 |
ninjette.org certified postwhore
Name: D
Location: Palm Beach, FL
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Yes. Why would you be so mean to your Ninja?
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September 26th, 2011, 06:32 PM | #385 |
ninjette.org sage
Name: Jon
Location: Usa
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Figured it would clean up her insides.. but i guess i was only poisoning her..
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September 26th, 2011, 09:16 PM | #386 | |
ninjette.org certified postwhore
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Quote:
Fuel injected bikes may be more tolerant of ethanol, but that's just speculation.
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September 27th, 2011, 07:02 AM | #387 |
ninjette.org sage
Name: Marc
Location: Crawfordville, Florida
Join Date: Jan 2010 Motorcycle(s): 2005 Suzuki S50, 2006 Kawasaki Ninja EX250F, 1990 Honda PC800, 2000 Yamaha TW200 Posts: 848
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As soon as you expose pure ethanol to the air, it absorbs water vapor and winds up more like 95% ethanol.
It's the combination of water and ethanol as well as gas that is so corrosive, and FYI, mixtures like E15 are banned in the marine industry and for any car engine manufactured prior to 2001, as it damages fuel tanks, hoses, gaskets, as well as internal parts leading to very costly repairs not covered under any warranty. |
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September 27th, 2011, 03:08 PM | #388 | |
meow?
Name: kevin
Location: I.E. SoCal
Join Date: Feb 2011 Motorcycle(s): 2004 636 Posts: 587
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Quote:
then, the 250 does have low compression just run whatever lowest is available in you area as long as it doesnt ping of course |
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September 27th, 2011, 06:04 PM | #389 | |
ninjette.org certified postwhore
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Uh, I don't think so. 14.7 is a low compression Diesel engine. Or an extremely high compression gasoline engine. Modern engines are all high compression and run about 10:1. The Ninja is very high compression at 12:1. You'll find low compression engines on antique cars like the Model T which was only 4.5:1.
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September 27th, 2011, 06:13 PM | #390 |
ninjette.org dude
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We've already had this discussion, check out post 340 right above. No, the ninjette engine isn't particularly high compression, and the compression ratio alone (area of combustion chamber at BDC/TDC) isn't the full story when it comes to how compressed the air-fuel mixture truly is.
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September 28th, 2011, 01:40 AM | #391 | |
meow?
Name: kevin
Location: I.E. SoCal
Join Date: Feb 2011 Motorcycle(s): 2004 636 Posts: 587
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that's why i say that that's "normal" anything more than 14.7 is high comp, anything less is low comp but then again you could be right, those numbers are from cars anyways for those that dont know.... cars - high HP, low torque bikes - low HP, high torque as far as i know there are no diesel motorcycles, so why even mention it everyone, at least those that know about cars, know that all diesels are high compression |
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September 28th, 2011, 02:04 AM | #392 |
ninjette.org dude
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The stoichiometric ratio (air to fuel ratio) has absolutely nothing to do with compression ratios (volume of combustion area, measured at BDC / TDC). The fact that they end up in a similar number range is a coincidence, nothing more.
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September 28th, 2011, 02:53 AM | #393 | |
meow?
Name: kevin
Location: I.E. SoCal
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Quote:
i totally confused the two sorry evurbady for the confusion i shall now go in my corner and weep inside |
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September 28th, 2011, 05:11 AM | #394 |
ninjette.org certified postwhore
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I'd like to know just what bikes use 14.7:1 compression ratio. I looked at a few sport bike specs and they're all around 12:1. Like I said before, 14.7 is high enough for a diesel. That means that making a gasoline engine with that ratio would be problematic to say the least.
Generally speaking, the higher the CR, the more power in the power stroke. Ideally, a million to one ratio would be great, but the laws of physics get in the way.
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September 29th, 2011, 02:32 AM | #395 |
meow?
Name: kevin
Location: I.E. SoCal
Join Date: Feb 2011 Motorcycle(s): 2004 636 Posts: 587
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i got my info wrong bruh
confused compression ratio with air:fuel ratio |
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October 1st, 2011, 01:57 PM | #396 |
ninjette.org sage
Name: john
Location: Palm Beach County, Fl Sligo County, Eire
Join Date: Dec 2010 Motorcycle(s): 2005 ninja 250 street fighter, 2008 street fighter ninja 500, 2001 nsr 125 Posts: 812
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87 octane
87 octane is for use on all per-gens. With all the explanations of why, I still see "my baby gets 93" as if it's a good thing to ruin your fuel system and destroy your performance. Could a "93" Head explain, nay enlighten us?
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October 1st, 2011, 02:21 PM | #397 |
ninjette.org certified postwhore
Name: Colin
Location: Bay Area
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There's already a massive thread here dedicated to the subject. Nothing about 93 will destroy your fuel system or anything performance. If it's not running right with 93, your spark is too cold and that's another problem.
The bikes were made to run on 87. Anything higher just hurts your wallet and nothing else.
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October 1st, 2011, 05:53 PM | #398 | |
Jigglin' your Jiglets
Name: Sean
Location: San Jose, Ca
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October 1st, 2011, 05:59 PM | #399 |
ninjette.org certified postwhore
Name: Colin
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Probably works out to be about $50 a year... Doesn't break the bank, but the idea that the bike "needs" higher octane is stupid. (except under certain circumstances maybe)
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October 1st, 2011, 06:06 PM | #400 |
ninjette.org sage
Name: Steve
Location: Valdosta GA, US
Join Date: Jul 2011 Motorcycle(s): 2012 Ninja 250, 2006 Ninja ZX6R-636 Posts: 661
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I normally use 88 octane which is mid-grade for my location. Regular is 86 octane, have yet to use it in the ninjette.
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