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post #1 of 18 Old 01-31-2012, 4:45 PM Thread Starter
 
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107 octane

Would it help to run 107 octane in A 99 cbr 900
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post #2 of 18 Old 01-31-2012, 4:50 PM
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Re: 107 octane

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Originally Posted by wyle00069 View Post
Would it help to run 107 octane in A 99 cbr 900

Help in what way exactly?
I can't think of any advantage to using it but it may have some additives that make it worthwhile for engine life and fuel economy perhaps.

"I won't forget that ride for a while. Maybe you're right. Living fast might be worth the final crash. Maybe that's the secret you fliers know." - Flight of the Intruder
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post #3 of 18 Old 01-31-2012, 4:56 PM Thread Starter
 
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Re: 107 octane

Give it more power. Or clean out any gunk or is it better to use a cleaner additive or pull the carb out and clean it ? I replaced the plugs and it hesitates about 4-5k rpm
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post #4 of 18 Old 01-31-2012, 4:59 PM
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Re: 107 octane

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Originally Posted by wyle00069 View Post
Give it more power. Or clean out any gunk or is it better to use a cleaner additive or pull the carb out and clean it ? I replaced the plugs and it hesitates about 4-5k rpm

No, higher octane does not increase power.
It allows you to run higher compression and that gives you more power.
Did it hesitate before you replaced the plugs?

"I won't forget that ride for a while. Maybe you're right. Living fast might be worth the final crash. Maybe that's the secret you fliers know." - Flight of the Intruder
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post #5 of 18 Old 01-31-2012, 5:00 PM Thread Starter
 
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Re: 107 octane

Yep
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post #6 of 18 Old 01-31-2012, 5:29 PM
 
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Re: 107 octane

Are you concerned that your carbs may be dirty? It sound as though you are. I'm not sure that would clean your carbs, but I know that there are additives that will loosen up the varnish. Burning that varnish through the engine probably isn't going to do it any favors though.
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post #7 of 18 Old 01-31-2012, 5:41 PM
 
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Re: 107 octane

i would try it its not gonna hurt anything and sounds easier than pulling the carb
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post #8 of 18 Old 01-31-2012, 5:46 PM
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Re: 107 octane

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Originally Posted by opey954 View Post
i would try it its not gonna hurt anything and sounds easier than pulling the carb

Some fuels can cause problems, especially racing fuels like methanol. If you don't know for sure that it's okay don't use it.

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post #9 of 18 Old 01-31-2012, 7:46 PM Thread Starter
 
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Re: 107 octane

Thanks its retarded realy research could have avoided a dumb question I thank you for your help
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post #10 of 18 Old 02-01-2012, 9:01 PM
 
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Re: 107 octane

Too much octane can. Be a bad thing. It will burn cooler. So much cooler that you will loose power & possibly cause carbon buildup.
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post #11 of 18 Old 04-18-2012, 8:07 AM
 
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Re: 107 octane

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Originally Posted by daveblank View Post
Too much octane can. Be a bad thing. It will burn cooler. So much cooler that you will loose power & possibly cause carbon buildup.
Yeah depends what you after.. but I found too much octane was actually giving a slight ping 07 1000RR and awe-full down low.. was running 98 went down to 95 and bike is a lot quieter but funnily enough a more cleaner responsiveness..
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post #12 of 18 Old 04-18-2012, 11:06 AM
 
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Re: 107 octane

High octane gas burns slower, thus preventing detonation.
However you don't need to run more than 87 in your 900rr. I like to run 91 since it's only a few dollars more and my bikes seem to run better on premium fuel. Race fuel is really only required for high compression engines, or turbo bikes, etc.
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post #13 of 18 Old 04-18-2012, 11:07 AM
 
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Re: 107 octane

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Originally Posted by wyle00069 View Post
it hesitates about 4-5k rpm
Clean the carb jets (all pilots and mains) and see if that fixes the problem. Also check and make sure the filter is clean.
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post #14 of 18 Old 04-18-2012, 12:50 PM
 
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Re: 107 octane

The best fuel for your bike is the fuel specified in the manual.

Higher octane DOES NOT equal more power, unless you're doing things like increasing compression or using a turbo. Even then, it's not the octane that's increasing the power, it's the modifications. Octane SLOWS DOWN the fuel burn, and helps to reduce or eliminate knock.

If the bike isn't braking properly, you don't start by rebuilding the engine.
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post #15 of 18 Old 04-18-2012, 1:58 PM
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Re: 107 octane

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Originally Posted by Sky91 View Post
The best fuel for your bike is the fuel specified in the manual.

Higher octane DOES NOT equal more power, unless you're doing things like increasing compression or using a turbo. Even then, it's not the octane that's increasing the power, it's the modifications. Octane SLOWS DOWN the fuel burn, and helps to reduce or eliminate knock.

Higher octane provides only one advantage - it can sit for longer before it becomes low octane.
But outside of the US the top-tier fuels have a bunch of additives that make them very worthwhile, in particular for engine life and fuel mileage.
I run 98RON in all my engines. I had cause to open up a car engine 60,000kms since I built it that's been run exclusively on 98 and the engine was spotless, so I intend to continue running it.

"I won't forget that ride for a while. Maybe you're right. Living fast might be worth the final crash. Maybe that's the secret you fliers know." - Flight of the Intruder
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