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Fuel octane question

 
  #11  
Old 01-10-2019, 08:44 AM
Madnss
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91 is fine imho

I run mostly 91 with corn, 93 if I can find it. 11.44 to 1 compression with 120hp
 
  #12  
Old 01-10-2019, 11:54 AM
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I allways use 98 or E5.
 
  #13  
Old 01-10-2019, 11:54 AM
pistondealer
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Go to any small town airport and buy 100LL if you think you need it.
 
  #14  
Old 01-10-2019, 12:44 PM
handirifle
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You cannot buy avgas here without it going into an aircraft. As mentioned 91 is the highest available here. Mine runs fine on the 91 I was simply wondering how guys with high compression bikes do it, but am learning there is more to it than just octane.

I doubt I would ever get to the point of upgrading my engine like that. Not really sure I need or want it. At 65+ I am mostly overvmy hot rod days. Power is nice when I want to pull a hill loaded heavy, but a lower gear is always available.
 
  #15  
Old 01-10-2019, 01:07 PM
Kingglide549
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You should pull a hill going past everyone in high gear, now that's living!
Loaded, two up and heavy!
 
  #16  
Old 01-10-2019, 01:10 PM
handirifle
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Yea that would be sweet but I didn't mention I probably couldn't afford the upgrade either sadly.
 
  #17  
Old 01-10-2019, 01:22 PM
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Don't you just love when you're filling up your scoot with the proper octane and someone tells you that you should be using super because it's "better performance"? Then you see those same people putting regular in their autos....lol!

I no longer try to explain it and just shrug my shoulders.

I use mid grade in my stage II and she purrs like a kitten. Have the dyno to prove it.

Little seafoam every few fill ups just for peace of mind.
 
  #18  
Old 01-10-2019, 01:34 PM
Kingglide549
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Modifying my old Evo is very satisfying.
If I bought a new bike it would not do anything this one won't unless I was into all the hi-tech electric crap.
(which I am not)
The money I would spend on a new bike just goes into the old bike.
I suppose i have 4K in my top end.
Every winter I do/try something different.
4 K is a dam cheap motorcycle!
Plus I have run away from a lot of Twinks ...That is satisfying on my part.
I am 66 and still have a competitive Hot Rod heart!
 
  #19  
Old 01-10-2019, 02:02 PM
handirifle
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Yea I guess you do. LOL I only paid a little over 4K for my bike. Obviously didn"t buy it new. Only had 14K on it. Thought about a big twin to take momma on, but not sure how long of a ride she will want to take, and the sporty is fine for shorter rides.

mrhammer
I might just try lower octane gas and see whut huppens. I would hate to hear the dreaded ping. CA gas is like a box of chocolates, ya never know what you're gonna get. Humm, that is a catchy phrase, I ought to repeat it.
 
  #20  
Old 01-10-2019, 02:04 PM
handirifle
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Oh and I happened to notice the other day, on the Vance n Hines Fuel Pak III web site, they have a CA model of it that does not alter CARB specs, so pretty worthless IMHO. Unless I could snag one from elsewhere......
 

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