Rajun Cajun
Expert Class
Posts: 289
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posted September 23, 2012 06:14 AM
97 octane vs 87 octane
Hey everyone! I have been using 97 octane since I got my bike and was wondering if I should switch to 87 octane? Do I need to do anything special if I switch? I feel like the bike will not run ok if I switch!
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Candy Thunder Blue 2006 ZX-14, +1 rear, RoaringToyz blocks, windscreen spikes! (VERY SHARP! DO NOT TOUCH!!!!)
Time lost can not be retrieved! Its not dumb to ask questions. Rajun Cajun
  
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joseph702
Zone Head
Posts: 598
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posted September 23, 2012 06:17 AM
On stock motor with right map u will gain hp. Higher octane slows burning wich is good if needed but will lower power when not needed. Brock and every one run the lower for racin on stock motors.
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eklipse636
Needs a life
ZX-14
Posts: 6046
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posted September 23, 2012 06:21 AM
As long as it doesn't detonate your fine. I run 89 when it's HOT, and 87 the rest of the time
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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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Rajun Cajun
Expert Class
Posts: 289
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posted September 23, 2012 06:29 AM
Thanks guys! Oops! 93 not 97! LOL
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Candy Thunder Blue 2006 ZX-14, +1 rear, RoaringToyz blocks, windscreen spikes! (VERY SHARP! DO NOT TOUCH!!!!)
Time lost can not be retrieved! Its not dumb to ask questions. Rajun Cajun
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biggmoinc
Zone Head
Posts: 747
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posted September 23, 2012 07:04 AM
quote:
Thanks guys! Oops! 93 not 97! LOL
No doubt lol,
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07 ZX14 bmc filter, muzzy m14, 16/44,66",auto shift, 6'3, 204lbs/1.54/3.99/6.03@120/7.8/9.32@147
biggmo@aol.com
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BobC
Pro
Posts: 1736
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posted September 23, 2012 07:39 AM
With cars the advantage with the premium fuels is better economy and cleaner running. I assume the same is true for bikes. Whether it's actually worth it is another question entirely.
A friend of mine took his stroker ZX-12R to a meeting and filled it with C16 which performed worse than regular unleaded. We pumped it out. He does use VP Import in his turbo bike though, to prevent the detonation which would happen at higher boost pressure with regular unleaded.
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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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madnessracing
Pro
Vmax and Busa Beater
Posts: 1140
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posted September 23, 2012 08:51 AM
I've had my best results with 98octane
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Shorty's Performance
Team Madness Racing
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Quarter Pounder
Pro
with Cheese
Posts: 1069
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posted September 23, 2012 01:03 PM
You will make more power with the lowest octane rating as long as you are not detonating. Almost any built motor will struggle with low octane though.
My advice...run the lowest octane with no detonation.
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SWB 2008 ZX-14
9.19 @ 151
5.98 @ 123
1.53 60'
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toledoUPSguy
Expert Class
An old guy with a new toy
Posts: 320
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posted September 23, 2012 01:34 PM
 Edited By: toledoUPSguy on 23 Sep 2012 21:35
I have been trying to run 89 octane shell through mine but if I roll (not wack open) the throttle on too briskly below 5000rpms it rattles bad. not sure if it is full on detonation or just pinging. 93 octane shell an no rattles.
The one time I had it at the strip I was on 89 and seemed fine.
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The man on top of the mountain didn't fall there.
2014 ZX14r in nuclear sunset orange and black
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zixxer14
Pro
Damn that was Quick
Posts: 1233
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posted September 23, 2012 03:47 PM
I've run 87 octane for years in So Fl. heat with no problems. Never had a hint of detonation.
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toledoUPSguy
Expert Class
An old guy with a new toy
Posts: 320
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posted September 23, 2012 06:35 PM
Stupid question I'm sure but is there a difference between detonation and pinging?
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The man on top of the mountain didn't fall there.
2014 ZX14r in nuclear sunset orange and black
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smokinZX14
Needs a life
Posts: 10197
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posted September 23, 2012 07:32 PM
quote:
Stupid question I'm sure but is there a difference between detonation and pinging?
No.... Ping , spark knock and pre detonation all the same thing just different words for the same thing ..
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Smokin Performance Cycles..
Tampa Bay , FL .. Brocks Performance Dealer ..
Gen 2 ZX14R Best ET 8.43 , Best MPH 164.95
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Bishopzx12
Zone Head
Posts: 517
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posted September 24, 2012 03:25 AM
Not to highjack but I have to ask. What is a good fuel for a 40 shot on the 14R. I have used 93 oct all the way up to a 200 shot on cars. I talked to Ryan Schnitz and he does not recommend C16 which for years have been the standard of VP fuel for nitrous car/bikes. He recommends a 110 either a VP or a Sunoco. He say he think the higher octane of the C16 will not let the bike reach its full potential. I have the 110 readily available at the pump on the way to my local track. However I was told that it would not be a bad idea to use some Q16. They say is a good fuel that delivers good power on/off the button.
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1996 ZX7R
1999 ZX9R
1999 ZX11
2000 ZX12R 1270
2002 GSXR 1000 "I was Drunk"
2003 ZX12R 1375
2006 ZX14
2012 ZX14R
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Bigbore4
Zone Head
Posts: 806
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posted September 24, 2012 03:50 AM
Just FYI, Detonation and pre ignition are unrelated. Pre ignition is due to hot spots or carbon deposits that light the mixture before the spark gets a chance.
Detonation is due to uncontrolled flame propagation. The reason the bikes can run so well at a higher CR on lower Octane is the chamber designs, the alloy heads that transfer heat quickly, and squish.
In the cars, we could run at least a point or point and a half higher with alloy heads, Same chamber design.
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chuck a
Parking Attendant
Posts: 21
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posted September 28, 2012 09:26 AM
i have used 87 and bike wouldnt run right
since then all i use is 93 octane, bike and vert run fine
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eklipse636
Needs a life
ZX-14
Posts: 6046
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posted September 28, 2012 11:05 AM
quote:
i have used 87 and bike wouldnt run right
since then all i use is 93 octane, bike and vert run fine
What do you mean by it wouldn't run right?
I run 87 as well, just curious if you got a bad batch of gas.
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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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Y2KZX12R
Needs a job
CompetitionCNC.com
Posts: 3762
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posted September 28, 2012 03:33 PM
quote:
Just FYI, Detonation and pre ignition are unrelated. Pre ignition is due to hot spots or carbon deposits that light the mixture before the spark gets a chance.
Detonation is due to uncontrolled flame propagation. The reason the bikes can run so well at a higher CR on lower Octane is the chamber designs, the alloy heads that transfer heat quickly, and squish.
In the cars, we could run at least a point or point and a half higher with alloy heads, Same chamber design.
+1
Your correct. And all detonation isn't the same either. There is mild detonation and severe detonation.....
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Y2KZX12R
CompetitionCNC.com
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