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87 - 89 - 91 ?(gas)

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CBR >> Current Honda CBR Models >> CBR 1000RR >> 87 - 89 - 91 ?(gas)

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87 - 89 - 91 ?(gas) - 6/22/2006 12:48:56 PM

SirJAG

Posts: 176
Joined: 6/1/2006
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which gas is best for my honda? dosent the owner manual say 91 or greater for the 2006 honda?

and my LS2 corvette motor also says to use 91 or greater. can i get away with going less than that? also the GM site says that for max performance (410hp) you need to use the 91.

but in other threads i read here it was saying that a higher octane gas will lower performance in some cases.....

so whats the low down guys?

thanks,
james

Post #: 1

RE: 87 - 89 - 91 ?(gas) - 6/22/2006 1:06:07 PM

Fordplay

Posts: 18
Joined: 5/6/2006
Status: offline

All I know is that if I go lower than 91 in my '05 CBR1000RR or the Super Charged Cobra that I use to have, the valves will rattle. Someone will be here shortly with a LONG explanation.LOL

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RE: 87 - 89 - 91 ?(gas) - 6/22/2006 1:29:11 PM

Joel

Posts: 98
Joined: 6/8/2006
Status: offline

I had the same question, My first fill up was the cheap 89% gas, I now get the 92%. I havent noticed a difference, but the manua states 91 or better.

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RE: 87 - 89 - 91 ?(gas) - 6/22/2006 4:18:04 PM

Amaese

Posts: 26
Joined: 2/21/2006
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There are some websites out there that promote sticking with regular octane, such as http://www.ftc.gov/bcp/conline/pubs/autos/octane.htm I think that as long as your engine isn't "knocking" you should be alright with what you are using. If it is knocking, use the next highest octane gasoline.

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RE: 87 - 89 - 91 ?(gas) - 6/22/2006 4:18:16 PM

Amaese

Posts: 26
Joined: 2/21/2006
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Post #: 5

RE: 87 - 89 - 91 ?(gas) - 6/22/2006 5:55:10 PM

kryptonite_cycle

Posts: 303
Joined: 5/14/2006
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highest octane i use is 91 says it on the tank

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Post #: 6

RE: 87 - 89 - 91 ?(gas) - 6/22/2006 8:36:28 PM

joker

Posts: 128
Joined: 10/15/2005
Status: offline

all octane rating is its resistance to pre-detotnation. with that said higher performance vehicles need higher octane fuels to resist knocking and pinging which is not good for a vehicle. honda civics and some other 4 bangers can run just fine on 87 due to its lower compression motors.

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Post #: 7

RE: 87 - 89 - 91 ?(gas) - 6/23/2006 4:47:53 AM

HighRevver

Posts: 792
Joined: 11/26/2005
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In a sense higher octane runs cooler on engines with high compression.

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Post #: 8

RE: 87 - 89 - 91 ?(gas) - 6/23/2006 10:17:32 PM

joker

Posts: 128
Joined: 10/15/2005
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well sort of, the engine will run cooler because its not fighting with pre-detonation, when an engine pre-detonates it is burning emulsified gas and air under compression rather than spark so when the piston reaches half way or a little more the 87 octane gas you put in may not be stable enough to resist that compression. this is the reason you do not want to run octane lower than recomended. it may not happen all the time but you should definitely run the proper octane level.

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Post #: 9

RE: 87 - 89 - 91 ?(gas) - 6/24/2006 12:41:39 AM

13brsxsrr

Posts: 1521
Joined: 3/1/2006
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quote:

ORIGINAL: joker

well sort of, the engine will run cooler because its not fighting with pre-detonation, when an engine pre-detonates it is burning emulsified gas and air under compression rather than spark so when the piston reaches half way or a little more the 87 octane gas you put in may not be stable enough to resist that compression. this is the reason you do not want to run octane lower than recomended. it may not happen all the time but you should definitely run the proper octane level.

+1, That was beautiful. I run diesel in my bike. LOL!!!!! My tech teacher always told me K.I.S.S. Higher compression, higher octane. Don't be cheap because it will cost you more in the long run. 91-93 octane at about 35-40 miles a gallon who cares about a "few" bucks here and there. A whole 25 cent difference between 87 and 93 is sad reson to rebuild an engine. Replacing rings aren't cheap!!!!
By the way gas isn't free in N.Y. I'm not rich, but $3.41 for 93 is well worth the price for fun and once your out it makes it easy to forget how much it cost.

< Message edited by 13brsxsrr -- 6/24/2006 2:51:14 PM >

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RE: 87 - 89 - 91 ?(gas) - 6/24/2006 4:05:59 AM

HighRevver

Posts: 792
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I use the words in a sense lightly, just run the higher octane so you don't run the risk of "detonating"/"Blowing"/or "burning" up your engine prematurely for the simple fact of being a tight wad on a Very high tech, high maintenance machine.

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Post #: 11

RE: 87 - 89 - 91 ?(gas) - 6/24/2006 10:03:32 PM

blade17fire

Posts: 353
Joined: 4/19/2006
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The fuel octane level offered in Singapore are higher than most states in the US..the lowest octane is 92, then 95, the highest 98. I usually run in 98..not to say that I'm rich but its the norm here for bikers to run 95 or higher..Is there any downside for running in high octane fuel for a relatively low compression engine like our Fireblade??

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< Message edited by blade17fire -- 6/24/2006 10:04:32 PM >

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RE: 87 - 89 - 91 ?(gas) - 6/25/2006 12:03:20 PM

13brsxsrr

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Joined: 3/1/2006
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12-1 compression isn't low. If you can afford the 98 it sure but you can run the 92 oct and be fine as long as it's unleaded.

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Post #: 13

RE: 87 - 89 - 91 ?(gas) - 6/25/2006 2:21:24 PM

joker

Posts: 128
Joined: 10/15/2005
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in singapore does the gas have ethynal

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Post #: 14

RE: 87 - 89 - 91 ?(gas) - 6/28/2006 6:38:14 AM

blade17fire

Posts: 353
Joined: 4/19/2006
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err...not too sure dude!! Wat Shell offers is Shell 95 Shell 98 and V Power(98)..

_____________________________

GPR Thunderline Exhaust
BMC air filter
Hodaka V stacks
Flapper mod
PC III
AFAM Sprockets
HID Headlights
HRC Clutch Springs
HRC Cam Sprockets
HRC Engine Power Up Kit III
HRC 1/6 Turn Throttle
Ported and Polished Cylinder Head

(in reply to joker)

Post #: 15