87 octane vs 93?

[Tuna]

Have a new 2006 750 katana. I noticed that I could hear a tick in the motor while running low RPM. I was running 87 octane. My dad said it was spark knock. So I went up to 89 octane. Much better. Has anyone else noticed this in their bikes. I think I will try 93 octane see how much better that will be.

[The CyberPoet]

If you're getting spark knock on 87 octane, change gas stations and try it again. It may have to do with the amount of ethanol/methanol in the fuel, or old/crappy mix.

Generally, high-detergent name-brand 87 octane should give you more power and less problems than 89 octane no-name brand. If you run into problems with 87, especially on a bike as new as yours, something is wrong with the fuel they're selling you.

See related threads here:

http://www.katriders.com/forums/viewtopic.php?t=5574

http://www.katriders.com/forums/viewtopic.php?t=7724

http://www.katriders.com/forums/viewtopic.php?t=21057

http://www.katriders.com/forums/viewtopic.php?t=17895

Cheers,
=-= The CyberPoet

[Tuna]

Cyber

You sure know your stuff. Iv'e read alot of stuff on here and you sure are sharp. I think you are right about the gas stations. I will check into it and give it a try. Thanks for all the info that you provided. I'm just a skid mark you know.

[Tuna]

wow

Looks like I'm a chicken strip now!

[Mr. Clean]

Well I tried 83 and 89 in my Kat but I had horrible performance so I had to start running 91. Now that one of the gas stations here is stocking 99 and 101 I'm running 101 octane awesome results. But I have a 1mm over bore custom built 771 in there sporting 13:1 compression so that *might* make a difference.

[bikerscars]

just maybe

[Moparict]

You might also be in too high of a gear and bogging the motor upon acceleration.

[jokerz73]

On my 03 Kat, I do notice a difference from 87 to 89 octane. But nothing from 89 to 91 and I have heard that it is just wasting money anyways (read it here).

Petro Canada 89 octane for me.