87

 

not a high performance motor, 87 is fine

 

What about the ethanol in the fuel.


Team Red-bull

 

Don't have it here!

 

if you dont use it for awhile, treat it... if your worried about it then i think 91 is ethanol free.. there is many many debates on ethanol do some reading and form your own opinion. i work in the boating industry where boats can sit for months over the winter. some say they have had problems many have not. imo for you to truly have ethanol problems the machine would have to sit for months without ever being moved

 

What the hell kind of boats are you runnin'? Up here I can't go 3 weeks without treating the fuel in my boat. Especially if I plan on spending time out on the Ocean.

 

I run 87 oct. with Sea Foam in every tank.

 

87. I only use seafoam if it sits for a couple months. anything over 87-89 octane is a waste and not all 91 is ethanol free. Im pretty sure our stations sell all 3 grades with ethanol. ill double check next time,but i thought i read a small sticker stating "all grades contain 10% ethanol".

 

All grades gas have ethanol unless its recreational non ethanol gas
Simple fact is that ethanol has higher octane and cheaper than rbob( reg gas)
It replaces mtbe and economically makes money for blenders to use ethanol
US uses abt 4 % blend just as oxygenate the rest up to 10% is cause they make money from it

 

I run 93

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93 here,....... I can tell a difference between 87 and 93

 

That's because your wallet is so much lighter for spending more on the 93 octane! Duncan is right. Our RZR engines run best on 87 octane fuel because they have a modest compression ratio. I run 87 octane with no ethanol.

My dad had to sign a waiver when he bought his new 570 RZR. The waiver stated the dealership could deny fuel related warranty claims if fuel containing ethanol was used in the machine. After our last ride, my dad left his 570 sit for about two weeks. It then took about ten minutes to get the machine started...his last fill up was with ethanol containing fuel. Another guy in our riding group had the exact same problem with his new 570. Machine sat for 2 weeks after the trip and wouldn't start. Ethanol is crap!:rm_thumbdown:

 

93 here,....... I can tell a difference between 87 and 93. also have run race gas once, little better performance also, but not worth $6 gallon.

 

93 and with every tank we put some Lucas Oil Octane Boost in.

 

i run 91 in mine, but its easier having the same gas for all the toys for me

 

i use 91

 

I've always ran 91 in all my toys

 

Always 91

 

premium in mine

 

I too run 91 in all my toys

 

What about jet fuel?


Team Red-bull

 

I run Jet-A exclusively.....





in my PT6A powered RZR.....



that I dreamed about last night!

:rofl3::rofl3::rofl3:

 

I was told from a guy who starts up gas stations for quick trip. He works for them actually said that the life expectancy of gas is round 2 weeks. Because of the ethanol. The government needs to take that crap out.

 

LOL...you guys that run anything over 87 octain on the 10 to 1 compression RZR engine are completely wasting your money and making LESS hp. I build and dyno tune motorcycles and as long as a engine has low compression like the RZR, lower octain fuel makes more HP. The only reason to run high octain fuel is with high compression or forced induction applications. The other day a guy came in with a hayabusa and we made some dyno pulls on 93 octain(168hp). Then drained the tank added 87 octain let it idle for 5 or so minutes and made another pull on the dyno(170hp). I've seen this time and time again. Your RZR engine will be the same. Now if you raise the compression(this makes more HP)93 octain or higher may be needed or the fuel may preignite before top dead center. UNLESS YOU MODIFY YOUR ENGINE MAKE MORE HP AND SAVE $ WITH 87 OCTAIN.

 

X2

 

The only playtoy that gets higher octane is my ltz-400. Lol reason being its 12:1 compression with a 434cc big bore in it.everything else is 87.

 

Funny you say that... I raced (harescrambles) for 2 years with a Z400 with a 434cc kit at 12.5:1 compression supposedly. It ran best on 87 octane fuel. The design of that combustion chamber doesn't need much octane...

My TRX450R though - that needed 91 or better in stock form, or it ran like crap.

 

I work for a manufacturing company that builds parts for Polaris' atv line and I've talked to Polaris engineers about this as they come in because they see my pictures of my riding trips on my toolbox as they walk by and they said it honestly makes not much difference running 87 or 93 in the 800. And that is fine. As long as mine runs fine and performs how I ride its fine for me

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Bunch of tight ass's. LOL

I run VP MS109 in my wife's 2013 XP 900 LE w/EPS. MS109 has 10% oxygenation by volume and is proven time and time again to be instant Hp.

I agree, the shit ain't cheap, but the best things in life never are!!!

 

You have got to be kidding...that's like hunting with a cannon when a 30-06 is clearly called for...

 

Prem. 91oct.

 

MS109 has very different properties in it compared to regular pump fuel(87-93 octain). True that MS109 will give a slight HP increase as well as other oxygenated fuels. 10% ethanol in pump fuel only raises oxygenation about 3.5%. MS109 raises it by 10-12%...Be careful running high oxygenated fuels in that they make a little more HP and torque but they also change your air/fuel ratio. They will make your engine(whatever it may be) run leaner. If an engine runs to lean it will burn up. The injectors are prescribed to flow from the factory depending on rpm, throttle position, load on engine etc., a certain amount of PUMP fuel to keep the air/fuel ratio I'm guessing around 13.5:1. Raise that ratio to around 15-16:1 and pop goes the engine. 10% increase in oxygen usually walks the jagged edge. 3.5% from ethanol only slightly raises it. And our machines are probably tuned from the factory with ethanol fuel. They are not tuned with exotic race fuels. I would have my machine remaped if I was going to run high oxygenated fuels.

 

Looks like I may have drawn out one of the smart guys here. LOL
I compete in jet ski freestyle competition in the S.E. on a Yamaha SuperJet with a DASA 1200 twin engine. When I finally saw the light as to the gains from VP's oxy fuels I went through one hell of a learning curve. Stupid me thought the carbs were all that would need my attention. As it turned out, the carbs were close but my MSD total loss curve was way off for the added oxy characteristics. Once everything was dialed in for the MS109, it made ALOT of improvement for my setup. Now I see my fellow competitors killing themselves trying to complete flatwater back flips with av gas and I just get a silly grin on my face.