cabrazx12
Parking Attendant
Posts: 20
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posted June 04, 2012 07:12 PM
87 or 93 octane
What octane gives more hp?
  
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Wheelie
Needs a life
Old Man
Posts: 6902
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posted June 04, 2012 07:18 PM
neither.
wee
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eklipse636
Needs a life
ZX-14
Posts: 6046
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posted June 04, 2012 07:19 PM
Just put the cheapest stuff you can find in it.
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Best: 60ft 1.351 1/8 5.68 mph 123.98 1/4
8.89 mph 151.32
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Bad in Black
Expert Class
Posts: 348
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posted June 04, 2012 09:22 PM
It seems we've had that question come up once every couple days for the last month straight. The search can be a pretty handy tool sometimes 
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BobC
Pro
Posts: 1736
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posted June 05, 2012 12:22 AM
 Edited By: BobC on 5 Jun 2012 08:29
My UK handbook for the 14 tells me to use 95 RON, I think that's 91 Octane in the US (?) but there's no point in higher octane unless you have pre-ignition. This won't happen on a stock engine, although some of the more expensive fuels here (UK), which are also the higher octane ones like Shell V-Power, are supposed to keep the engine cleaner and allow it to perform to the optimum.
It's the high ethanol content fuel you need to avoid. Maximum of 10% according to Kawasaki.
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Candy Thunder Blue 2006 ZZR1400
Stock wheelbase
Max: 205.4 mph in 1.25 miles
2012 ZZR1400 in Golden Blazed Green
Brock CT Full System. etc
Max: 203.1 in 1 mile (so far)
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Seno
Pro
BANNED FOR LIFE!
Posts: 1230
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posted June 05, 2012 01:54 AM
89....
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2012 Black 14R -> Completely done!
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zx996
Novice Class
Posts: 55
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posted June 05, 2012 09:14 AM
Edited By: zx996 on 5 Jun 2012 17:15
Tried an experiment the other day.fill both the 14 and the busa,with the wife driving it,with 89 octane. For the next tank filled them both with 91. They both went 20kms,12 miles,farther with the 91.don't know which one makes more power,both the 91 gets better fuel milage.
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The big blue whale 06zx14 and the big red bus 01 busa,red rocket 02zx12
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SteveWFL
Moderator
Posts: 27920
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posted June 05, 2012 09:32 AM
quote:
Tried an experiment the other day.fill both the 14 and the busa,with the wife driving it,with 89 octane. For the next tank filled them both with 91. They both went 20kms,12 miles,farther with the 91.don't know which one makes more power,both the 91 gets better fuel milage.
was the temp/humidy and everything else the exact same? Thats a big difference
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2010 Concours14
'08 R1 YAMAHA
ZX14 gone!
CBR600RR track bike
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zixxer14
Pro
Damn that was Quick
Posts: 1233
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posted June 05, 2012 01:07 PM
I find the same thing, better fuel mileage with higher octane, but I run 87 year round & save the extra $ for tires. It works out to be more expensive running 93 even with the small gain in mileage plus the bike hauls ass on 87 (it;s an '06). The temp/humidity here is always 100/100 for 9 months.
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zx996
Novice Class
Posts: 55
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posted June 05, 2012 01:19 PM
Edited By: zx996 on 5 Jun 2012 21:20
quote:
quote:
Tried an experiment the other day.fill both the 14 and the busa,with the wife driving it,with 89 octane. For the next tank filled them both with 91. They both went 20kms,12 miles,farther with the 91.don't know which one makes more power,both the 91 gets better fuel milage.
was the temp/humidy and everything else the exact same? Thats a big difference
temps were the same all day.put on 300miles two tanks.have noticed this before everytime I have to run below 91.we don't get 93 up here in eastern Canada.
____________
The big blue whale 06zx14 and the big red bus 01 busa,red rocket 02zx12
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vailes3705
Expert Class
Gettin Better
Posts: 235
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posted June 05, 2012 02:02 PM
quote:
quote:
quote:
Tried an experiment the other day.fill both the 14 and the busa,with the wife driving it,with 89 octane. For the next tank filled them both with 91. They both went 20kms,12 miles,farther with the 91.don't know which one makes more power,both the 91 gets better fuel milage.
was the temp/humidy and everything else the exact same? Thats a big difference
temps were the same all day.put on 300miles two tanks.have noticed this before everytime I have to run below 91.we don't get 93 up here in eastern Canada.
Mine is the same way. I get an average of 9-10 miles more per tank with 93 octane than I do when I use 89. I don't notice any power differnece between the two though.
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2011 ZX14
Best 1/8 mile to date:
5.90 @ 121
1.46 60ft
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CrotchRocket
Moderator
Bracket Racing with Betsy
Posts: 8038
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posted June 05, 2012 06:16 PM
87 burns faster!!!
____________
Jason Miller StreetBike Seminars
*****DragRacers do it better, because they dont cut Corners*****
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mma-tv
Expert Class
Posts: 147
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posted June 05, 2012 09:08 PM
89 octane here is 10% ethanol which kills mileage. I tried 87 octane but it spark knocked at low rpm. So, I only use premium 91-93 octane now.
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Seno
Pro
BANNED FOR LIFE!
Posts: 1230
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posted June 07, 2012 03:57 AM
From what I have read, 89 makes best power.... Stock motor setup. Obviously if your running a built motor then the ocatane requirements will be different.
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2012 Black 14R -> Completely done!
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kawa74
Expert Class
Posts: 226
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posted June 07, 2012 09:14 AM
Gas................Octane................Specific Gravity (Density)............Heat Value
Reg..................87..........................., .740............................................42.7
Mid...................89..........................., .745............................................43
Prem...............93............................, .755...........................................43.5
E-85................101.........................., .783...........................................29
Octane only controls Preignition, Knok, Detonation,
E-10 , MORE Ethanol is added to Summer blend, March to October, LESS Nov through Feb, to help Starting in Cold climates,( EPA mandate.)
Lower the Specific Gravity (Density) the Thinner the Fluid, it will Flow more fluid through a given size jet or injector, in the Same amount of Time
Without changing A/F , Maps, Jets, Injectors
Lower specific gravity = thinner = richer
Higher specific gravity = thicker = leaner = better gas milage
Ethanol has less Heat Value = Burns Cooler , also absorbs Water, less room for Qxgyen molcules = Less Power
MR-9.............87...................., .718
MR-12...........87..................., .733.
C-25.............113..................., .695
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"I have never met a man so Ignorant that I coun't Learn from him"..."Galileo"
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CrotchRocket
Moderator
Bracket Racing with Betsy
Posts: 8038
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posted June 07, 2012 04:58 PM
MR9 was & is the best race gas out there !!!
____________
Jason Miller StreetBike Seminars
*****DragRacers do it better, because they dont cut Corners*****
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dakota9498
Pro
Posts: 1181
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posted June 07, 2012 05:22 PM
quote:
MR9 was & is the best race gas out there !!!
We will have to agree to disagree, MR12 has worked best for me. I have ran a few pales of each, the MR9 works well, but my best times and MPH came from MR12.
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2008 ZX14
Never argue with a fool, onlookers may not be able to tell the difference. ~Mark Twain
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