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Does anyone have suggestions or comments on the use of racing fuel on the 450r?
Racing Fuel
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it may be safe to run it 50/50 with Premium fuel...but I dont know about running straight 110 octane through it.....good luck if you do, and let us know what happens. B)
There should most likely be no problems with running 100% high octane as long as it is a good fuel made for use in gas motors
Unless the book or manufacture specifies not to
You will not gain power specificly from a high octane gas unless it is needed because of detonation in a high copression motor somthing like 13.5-1 and above should run high octane to avoid detonation
Detonation is when the pressure of the fuel air mixture gets so high that it detonates without a spark due to the heat of compression it will start trying to be a deisel however think about it if the gas is igniting before the spark the pistion is not to TDC ''top dead center'' or past so the rod and all the bearings must take the huge force that it would to force the piston to keep compressing an exploding mixture until the piston can go past TDC and start going back down
If power is gained which it will most likely run a little better smoother faster cooler it is because it is an all around better grade of gas not the octane that does it
That being said in my openion when i get my 450r i will run a good 93 octane however it may be a good idea to run higher just because it ussualy not only higher in octane but also a better fuel period.
Later
Unless the book or manufacture specifies not to
You will not gain power specificly from a high octane gas unless it is needed because of detonation in a high copression motor somthing like 13.5-1 and above should run high octane to avoid detonation
Detonation is when the pressure of the fuel air mixture gets so high that it detonates without a spark due to the heat of compression it will start trying to be a deisel however think about it if the gas is igniting before the spark the pistion is not to TDC ''top dead center'' or past so the rod and all the bearings must take the huge force that it would to force the piston to keep compressing an exploding mixture until the piston can go past TDC and start going back down
If power is gained which it will most likely run a little better smoother faster cooler it is because it is an all around better grade of gas not the octane that does it
That being said in my openion when i get my 450r i will run a good 93 octane however it may be a good idea to run higher just because it ussualy not only higher in octane but also a better fuel period.
Later
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Thanks again for informative reply, especialy from meanrhino.
My mechanic is going to love the technical side of this site.
Greatings from South Africa.
Some sites here on off-road racing: www.nwmotorsport.co.za, www.edirt.co.za, www.promotorsport.net.
My mechanic is going to love the technical side of this site.
Greatings from South Africa.
Some sites here on off-road racing: www.nwmotorsport.co.za, www.edirt.co.za, www.promotorsport.net.
i would not run any thing over 93octane untill you get a higher compression piston, your motor could run worse. check out www.exriders.com/vbb and scroll down to the 450r forum, there is a thread about this topic.
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what do you think now. sounds like meanrhino. knows how to BS. Must be a car salesman
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I would Run VP fuels "U2"........ Non Oxygenated fuel ... will not effect jetting and will pick HP up to about 6% over other race gas.... Clear in color..
92 engine octaine..........
$5 a gallon i think..... it is low octaine JET fuel....
drain your tank and then put this in and leave you old gas in you float and when the U2 hits the carb it is almost like a little shot of NOS..... its pretty cool .....
92 engine octaine..........
$5 a gallon i think..... it is low octaine JET fuel....
drain your tank and then put this in and leave you old gas in you float and when the U2 hits the carb it is almost like a little shot of NOS..... its pretty cool .....
i got it for you. http://www.exriders.com/vbb/showthread.php...threadid=105736
I think that guy on exriders was having different problems than the gas he was running. I've never heard of starting problems with 'better' gas.
If they were trying to use aviation fuel or something (you can easily get 110/130 for small planes) that might cause problems because aviation fuel often has additives to assist with cooling, small airplane engines are air-cooled. Maybe this could cause some problems. But if you are using 'proper' high-octane race fuel for bikes, you should have no problems.
-RR
If they were trying to use aviation fuel or something (you can easily get 110/130 for small planes) that might cause problems because aviation fuel often has additives to assist with cooling, small airplane engines are air-cooled. Maybe this could cause some problems. But if you are using 'proper' high-octane race fuel for bikes, you should have no problems.
-RR
Will it help by a large amount no
will it give u a small amount of power yes
aviation fuel should not be used maybe the make your old 84 atc 185 chase cattle a little faster
but like they said it has alot of adatives for cooling a lubrication
even if there is not a noticable difference in power it does allow for slightly lower engine temps
how about some info to back up the running worse and it wont help at all theories
will it give u a small amount of power yes
aviation fuel should not be used maybe the make your old 84 atc 185 chase cattle a little faster
but like they said it has alot of adatives for cooling a lubrication
even if there is not a noticable difference in power it does allow for slightly lower engine temps
how about some info to back up the running worse and it wont help at all theories
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I think if you are just a weekend worrior then you can run Sunoco 94, BP/Amaco Ultimate 93, or anything above 92 ........
But if you are into raceing and need that extra 2 hp then go with the race gas.... the VP U4 (92 octane) is the best for under 12-1 comp.... but Expensive... it is what my guys and i run....... the U2 (101 octane) is the best High Comp race gas .... and also very expensive.... unless you are into the HIGH COMPRESSION then stay with the 92 and above gas or the U4 from VP (or its equivalent)..... but just run the pump gas unless you really need the extra 2 hp..... MORE FOR ME
But if you are into raceing and need that extra 2 hp then go with the race gas.... the VP U4 (92 octane) is the best for under 12-1 comp.... but Expensive... it is what my guys and i run....... the U2 (101 octane) is the best High Comp race gas .... and also very expensive.... unless you are into the HIGH COMPRESSION then stay with the 92 and above gas or the U4 from VP (or its equivalent)..... but just run the pump gas unless you really need the extra 2 hp..... MORE FOR ME
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you guys are something else....can you feel a diffrence in your car when you run 187, or 189, versus 192...no you cannot tell a diffrence in power....why do you think it would matter in the atv....although there may be a slight diffrence, you cannot feel it, nor does it improve quarter mile times.....you guys can waste your money if you want....its your money.
after reading some posts it seems that everyone thinks i am saying pay your 5$ a gallon for race gas i didnt read my first post i explained completely what high octane is used for all i am saying is that yes there is a difference and a large in the quality of the fuel ignoring all octane levels u get better gas for more money i am not saying HEY EVERYBODY RUN RACE GAS
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Im sorry man, I didnt mean to sound hostile at all. Sometimes my words just come accross like that. I put more emphisis on getting my point accross then what I sound like.....so sorry, I dont ever mean to sound like a A hole, so whenever I do people please let me know, I will always say Im sorry, I know I do it sometimes. But its not on purpose.....
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No you dont feel a diff with it in your vehicle...... but you will see it in an engine tear down and see that your engine has been running cleaner and is working more efficient........ in a quad or bike you will not FEEL the diff either..... BUT put it on a dyno and you will SEE a diff..... the difference comes from the engine working easier to perform better...... no it is not a lot but the engine does like the BETTER gas.... not saying higher octane but BETTER gas...... if you are running a HIGH Compression piston you BETTER run that high octane.... 100+ ....... in the stock engines you can run up to 103 and be fine and it will run leaner and run with more power .... 1-2 hp...... i gained torque with the increase of my octane and kept the Hp reading steady with the change........ if you can afford it then go with a little better gas and a little higher octane and remember that if you go too high you will FRY you motor.... not a pretty sight........
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