Gas

dirt_dogg · 08-23-2007, 04:27 PM

I just bought a '05 YZ250F and the guy told me that he just put regular gas in it....so I think he means unleaded 89. But i thought you were suppose to put a higher octain in it

wr250f95 · 08-23-2007, 05:31 PM

91 octane will work, you dont need race gas.

tigmaster · 08-23-2007, 08:06 PM

ya i would suggest running watever "premium" grade is available. the gas is "cleaner" if u want to say and is a higher octane, more fitting for your bike.

wr250f95 · 08-23-2007, 08:40 PM

ya, they made it to run on 91, running anything higher isnt really gonna give you much, now if you change the compression then you may need to run higher.

tigmaster · 08-23-2007, 08:45 PM

ya, just run premium and u will be fine, u dont need any higher. i run 93 with a 13.5:1 with no knocking at all.

JThompson · 08-24-2007, 12:39 AM

Always ran race gas in my two strokes. Never had any problems... The higher octane the cleaner its going to be

tigmaster · 08-24-2007, 05:31 AM

ya, it does keep the engine cleaner.

gscx · 08-24-2007, 05:59 PM

i just gotta question. can you put something like an octane booster in premix. i want to try it put i dont want to mess my bike up

wr250f95 · 08-24-2007, 06:30 PM

I dont see it doing anything bad, but octane booster isnt nessacary the best stuff either

tigmaster · 08-25-2007, 04:17 PM

octane is confusing to some people so let me clear things up. the reason for having an octane rating is to prevent premature ignition. now say yur bike is designed to run on 93 and your like im gonna run 115 because higher octane must be more performance. well u actually start to loose power due to the more effort exerted to try and ignite fuel designed to be ignited at a temperature that barely reachable for your engine. ya. so if u dont hear knocking, u dont need a higher octane rating because u arent going to gain some random performance. and for all u people that are out there saying o, i used 112 and could feel the diff, no, dyno charts show that a gain of 1 hp on dirt bikes is average. just throwing out some random facts.

08-23-2007, 04:27 PM	#1 (permalink)
dirt_dogg C Rider Join Date: Jun 2007 Location: Pittsburgh,PA Posts: 7 iTrader: (0)	Gas I just bought a '05 YZ250F and the guy told me that he just put regular gas in it....so I think he means unleaded 89. But i thought you were suppose to put a higher octain in it

08-23-2007, 05:31 PM	#2 (permalink)
wr250f95 Super Moderator Join Date: May 2007 Location: New Mexico Posts: 7,843 iTrader: (1)	91 octane will work, you dont need race gas. __________________ "LIFE'S JOURNEY IS NOT TO ARRIVE AT THE GRAVE SAFELY IN A WELL PRESERVED BODY, BUT RATHER TO SKID IN SIDEWAYS, TOTALLY WORN OUT, SHOUTING'...HOLY S**T... WHAT A RIDE!" this, is why I ride.

08-23-2007, 08:06 PM	#3 (permalink)
tigmaster Administrator Join Date: Aug 2006 Location: Missouri, United States Posts: 7,527 iTrader: (1)	ya i would suggest running watever "premium" grade is available. the gas is "cleaner" if u want to say and is a higher octane, more fitting for your bike. __________________ --'03 CRF450r-- --FMF Pipe, Pro-Tech Revavle-- --Vortex Basket With Tusk Disks And HP Springs-- --Pro Taper Triple Clamps And Bars-- --Devol Full SP With Moose HGs-- --Renthal 13/50 With R1 Chain-- --Now It Is The End, Probably...-- --'06 CBR F4I-- --Bone Stock-- Check Our Latest How-To Here

08-23-2007, 08:40 PM	#4 (permalink)
wr250f95 Super Moderator Join Date: May 2007 Location: New Mexico Posts: 7,843 iTrader: (1)	ya, they made it to run on 91, running anything higher isnt really gonna give you much, now if you change the compression then you may need to run higher. __________________ "LIFE'S JOURNEY IS NOT TO ARRIVE AT THE GRAVE SAFELY IN A WELL PRESERVED BODY, BUT RATHER TO SKID IN SIDEWAYS, TOTALLY WORN OUT, SHOUTING'...HOLY S**T... WHAT A RIDE!" this, is why I ride.

08-23-2007, 08:45 PM	#5 (permalink)
tigmaster Administrator Join Date: Aug 2006 Location: Missouri, United States Posts: 7,527 iTrader: (1)	ya, just run premium and u will be fine, u dont need any higher. i run 93 with a 13.5:1 with no knocking at all. __________________ --'03 CRF450r-- --FMF Pipe, Pro-Tech Revavle-- --Vortex Basket With Tusk Disks And HP Springs-- --Pro Taper Triple Clamps And Bars-- --Devol Full SP With Moose HGs-- --Renthal 13/50 With R1 Chain-- --Now It Is The End, Probably...-- --'06 CBR F4I-- --Bone Stock-- Check Our Latest How-To Here

08-24-2007, 12:39 AM	#6 (permalink)
JThompson Administrator Join Date: Aug 2006 Location: Bellingham WA Posts: 4,925 iTrader: (6)	Always ran race gas in my two strokes. Never had any problems... The higher octane the cleaner its going to be __________________ Tired of ads? Become a member for an almost ad free site! Also we give away monthly prizes just for posting! Register today! Looking for places to ride! Want to review a riding area? Check them out! PRE-ORDER MOTOTIPS Stickers now. Help keep mototips running! Get your order in today! Buy NOW! Special Discounts for members only! Check out our new discount forum for retailers offering to help you save money! Mototips Discounts

08-24-2007, 05:31 AM	#7 (permalink)
tigmaster Administrator Join Date: Aug 2006 Location: Missouri, United States Posts: 7,527 iTrader: (1)	ya, it does keep the engine cleaner. __________________ --'03 CRF450r-- --FMF Pipe, Pro-Tech Revavle-- --Vortex Basket With Tusk Disks And HP Springs-- --Pro Taper Triple Clamps And Bars-- --Devol Full SP With Moose HGs-- --Renthal 13/50 With R1 Chain-- --Now It Is The End, Probably...-- --'06 CBR F4I-- --Bone Stock-- Check Our Latest How-To Here

08-24-2007, 05:59 PM	#8 (permalink)
gscx Pro Mototips Member Join Date: Aug 2007 Location: bridgeville DE Posts: 2,234 iTrader: (0)	i just gotta question. can you put something like an octane booster in premix. i want to try it put i dont want to mess my bike up

08-24-2007, 06:30 PM	#9 (permalink)
wr250f95 Super Moderator Join Date: May 2007 Location: New Mexico Posts: 7,843 iTrader: (1)	I dont see it doing anything bad, but octane booster isnt nessacary the best stuff either __________________ "LIFE'S JOURNEY IS NOT TO ARRIVE AT THE GRAVE SAFELY IN A WELL PRESERVED BODY, BUT RATHER TO SKID IN SIDEWAYS, TOTALLY WORN OUT, SHOUTING'...HOLY S**T... WHAT A RIDE!" this, is why I ride.

08-25-2007, 04:17 PM	#10 (permalink)
tigmaster Administrator Join Date: Aug 2006 Location: Missouri, United States Posts: 7,527 iTrader: (1)	octane is confusing to some people so let me clear things up. the reason for having an octane rating is to prevent premature ignition. now say yur bike is designed to run on 93 and your like im gonna run 115 because higher octane must be more performance. well u actually start to loose power due to the more effort exerted to try and ignite fuel designed to be ignited at a temperature that barely reachable for your engine. ya. so if u dont hear knocking, u dont need a higher octane rating because u arent going to gain some random performance. and for all u people that are out there saying o, i used 112 and could feel the diff, no, dyno charts show that a gain of 1 hp on dirt bikes is average. just throwing out some random facts. __________________ --'03 CRF450r-- --FMF Pipe, Pro-Tech Revavle-- --Vortex Basket With Tusk Disks And HP Springs-- --Pro Taper Triple Clamps And Bars-- --Devol Full SP With Moose HGs-- --Renthal 13/50 With R1 Chain-- --Now It Is The End, Probably...-- --'06 CBR F4I-- --Bone Stock-- Check Our Latest How-To Here

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