Correct Octane Rating
12-28-2007, 02:39 AM
#1
Senior Member
Back Marker
Thread Starter
Join Date: Mar 2005
Posts: 107
Correct Octane Rating
What is the impact of Octane Rating with the VTR.
In Souh Africa, we were using leaded 98Octane till 2 years ago. With the banning of leaded fuel and the move to unleaded, we only have 93 Octane, however, some companies are now introducing unleaded 95 Octane.
Your thoughts?
Gerrit
In Souh Africa, we were using leaded 98Octane till 2 years ago. With the banning of leaded fuel and the move to unleaded, we only have 93 Octane, however, some companies are now introducing unleaded 95 Octane.
Your thoughts?
Gerrit
12-28-2007, 06:27 AM
#5
Banned
MotoGP
Join Date: Aug 2007
Location: Lake View Terrace, CA
Posts: 5,942
12-28-2007, 07:08 AM
#6
Senior Member
Back Marker
Join Date: Aug 2006
Posts: 134
just a thought. here in the usa we use the r+m method of rating octane levels. in some owners manuals this method is not used. i believe the method for the shawk has the "m" designation. (under the seat says 91) in which case the r+m method runs 3 or 4 points lower than the "m" method. i run 87(r+m) no prblems.
12-28-2007, 07:20 AM
#7
Senior Member
MotoGP
Join Date: Jul 2007
Location: NW North Carolina
Posts: 6,110
Mine seems to get better MPG with 93 but not much better. We have a local station that only charges 15 cents more for 93 vs. 87 so it does not cost much extra on a fill up.
They also have 100 octane at the pump for $4.99.
Might just be in my head though.
They also have 100 octane at the pump for $4.99.
Might just be in my head though.
12-28-2007, 07:39 AM
#8
Post Whore Junior
MotoGP
Join Date: Nov 2006
Location: Triad, NC
Posts: 4,825
I run 87 99% of the time.. Have run 91, and the bike seems to like it (or is it just in my head?).. I have even run 91 on octane booster.. Got a contact at a local airport. May try to get some 100 or 110LL.. then there's a local guy that I can get some 110 from (Race fuel).. not done it yet though.. The bike is fast enough, that would just encourage me to go faster longer...
12-28-2007, 07:50 AM
#9
Senior Member
MotoGP
Join Date: Jul 2007
Location: NW North Carolina
Posts: 6,110
I have wasted so much $$ on race fuel in the past that it is pitiful. I finally figured out that the high octane fuel was compensating for poor jetting. Higher octane fuel actually leans out a motor. When I would ride from a 500 ft. altitude up to 2000 ft. altitude, it would just run better overall on the 110.
12-28-2007, 02:26 PM
#12
Senior Member
MotoGP
Join Date: Aug 2007
Location: Way Out West
Posts: 2,547
My '03 owner's manual (U.S.) calls for "unleaded, 86 (or higher)".
I'm pretty sure different countries have different formulas for octane ratings, so what is rated "87" here might be some other number elsewhere.
I'm pretty sure different countries have different formulas for octane ratings, so what is rated "87" here might be some other number elsewhere.
Thread
Thread Starter
Forum
Replies
Last Post
Vega (streetfighter)
General Discussion
18
07-25-2008 04:51 AM
