Sunoco Fuel

6081 Views 40 Replies 14 Participants Last post by juice8792, Mar 27, 2009

davispalmer

Discussion Starter · Mar 25, 2009

I have found there to be only one provider for race fuel in my area. Kellerstrass- they carry Sunoco race fuel and have the following fuels

The standard- 110
Supreme- 112
MO2X- 112, which is oxygenated
HRC Plus- 114
Maximal- 116

I would like to know if the oxygenated MO2X is worth running or if i should run 110, 112, 114 or 116.

Am i going to see a differnce between the fuels?

Im currently running vemon 14.25 piston sitting on a +3 crank with ron woods thicker base gasket with oem head gasket, so whatever that compression comes out to be is where i am.

Thanks!

1 - 20 of 41 Posts

spilldathrill

· #2 · Mar 25, 2009

I have run 93 octane, 50/50 gas/race fuel, and 110 octane. I have a mostly stock motor except for a ported head. I have to say that I never really felt a difference between the 93 octane to the 110. It didn't feel like it pulled any harder or had much more zip to it, however, the throttle response seemed like it may have been a little more crisp with the 110. I continue to run 93 octane and I'm perfectly happy with it.

With that being said, I'm pretty sure with your motor you probably have to run race gas. I do not know anything about the oxygenated 112 but from what I've experienced I don't think (IMO) that you will really feel a big difference, if any diff. at all, between the 110 and higher octanes.

davispalmer

Discussion Starter · #3 · Mar 25, 2009

thanks for your opinion..

2 fast for you

· #4 · Mar 25, 2009

i run cam 2 which is a 110 sunoco. that works great

cubanaso

· #5 · Mar 26, 2009

ur prob not going 2 feel a difference u should just try 2 see which i like best...
and u might want 2 get it up a little if anything

Oregon's Finest

· #6 · Mar 26, 2009

QUOTE (SpillDaThrill @ Mar 25 2009, 09:45 AM) index.php?act=findpost&pid=761985

I have run 93 octane, 50/50 gas/race fuel, and 110 octane. I have a mostly stock motor except for a ported head. I have to say that I never really felt a difference between the 93 octane to the 110. It didn't feel like it pulled any harder or had much more zip to it, however, the throttle response seemed like it may have been a little more crisp with the 110. I continue to run 93 octane and I'm perfectly happy with it.

With that being said, I'm pretty sure with your motor you probably have to run race gas. I do not know anything about the oxygenated 112 but from what I've experienced I don't think (IMO) that you will really feel a big difference, if any diff. at all, between the 110 and higher octanes.[/b]

You do realize the higher the octane the less power you will have on a comparable quality fuel right? Run the lowest octane you can...

spilldathrill

· #7 · Mar 26, 2009

QUOTE (Oregon's Finest @ Mar 25 2009, 09:20 PM) index.php?act=findpost&pid=762220

You do realize the higher the octane the less power you will have on a comparable quality fuel right? Run the lowest octane you can...[/b]

No, I actually did not know that at all. Can you explain the reasons?
I was always told to run the highest octane pump gas i could get 92-93 octane at least.
I would really like to know the reasons behind it.

Oregon's Finest

· #8 · Mar 26, 2009

Octane is the measurement of how long it takes for the fuel to ignite, so lower number equals a more volatile fuel which equals bigger boom which means more power.

The problems start when compression goes up. Then you need to run higher octane's to avoid detonation...

juice8792

· #9 · Mar 26, 2009

I have always and only run VP Racing fuels, C12 and U4.2 and love them both.
I ran sunoco one time because I had no other choice. 100 octane unleaded oxygenated...
My quad could not have hated it worse! By the way I only have about 13:1 maybe 13.5:1 compression.. but still that's fine.
I am wondering if it being unleaded made it completely sputter and die and not even start!
Swapped it back right away to some VP C12 and ran like a champ the rest of the track..

I am not trying to bash Sunoco I think I just made a wrong decision in my choice.. Which was my fault.
But I know the VP C12 and U4.2 run incredible.. Sure you don't always feel the biggest gain but as far as knocking and running as strong and long as possible. I notice it, and especially when you run the oxygenated fuel you feel torque like crack for your bike. Just try them and and let us all know! Then maybe I will try a pale and give it a shot. I am open to trying Sunoco, but don't want to buy another pale without knowing for sure. The MO2X is tons of octane so that's no problem.. 105 octane would probably be more than enough, Try that and let us know!

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spilldathrill

· #10 · Mar 26, 2009

That makes sense, thank you for the explanation.

So with saying to run the lowest octane, do you advise 87 octane pump gas or is there such a thing as going too low on octane (I know there's too low but is 87 the base of that limit or is premium pump gas like 92/93 the base)?

trick97gagt

· #11 · Mar 26, 2009

QUOTE (Jacob C. @ Mar 25 2009, 08:46 PM) index.php?act=findpost&pid=762236

I have always and only run VP Racing fuels, C12 and U4.2 and love them both.
I ran sunoco one time because I had no other choice. 100 octane unleaded oxygenated...
My quad could not have hated it worse! By the way I only have about 13:1 maybe 13.5:1 compression.. but still that's fine.
I am wondering if it being unleaded made it completely sputter and die and not even start!
Swapped it back right away to some VP C12 and ran like a champ the rest of the track..

I am not trying to bash Sunoco I think I just made a wrong decision in my choice.. Which was my fault.
But I know the VP C12 and U4.2 run incredible.. Sure you don't always feel the biggest gain but as far as knocking and running as strong and long as possible. I notice it, and especially when you run the oxygenated fuel you feel torque like crack for your bike. Just try them and and let us all know! Then maybe I will try a pale and give it a shot. I am open to trying Sunoco, but don't want to buy another pale without knowing for sure. The MO2X is tons of octane so that's no problem.. 105 octane would probably be more than enough, Try that and let us know![/b]

VP Racing fuel here as well. Haven't had U4.2 in it yet, but it will after it comes back from TTM. Has C12 in it right now cuz thats all I had.

Oregon's Finest

· #12 · Mar 26, 2009

Well the quality of the fuel is also important. Plus 91 is considered the lowest octane on stock piston, 93 for 12.5:1...

08_nismo

· #13 · Mar 26, 2009

QUOTE (Oregon's Finest @ Mar 25 2009, 06:20 PM) index.php?act=findpost&pid=762220

You do realize the higher the octane the less power you will have on a comparable quality fuel right? Run the lowest octane you can...[/b]

I have never heard that at all. The octane rating of gasoline tells you how much the fuel can be compressed before it spontaneously ignites not how long it takes to ignite. Interesting concept though.

But I do know that higher octane gas will not make anything faster or give any more power. It just gives you the ability to tune it with more power. the higher octane helps prevent detonation and allows for much higher compression and allows you to advance your timing much more then normal fuels.

spilldathrill

· #14 · Mar 26, 2009

QUOTE (Oregon's Finest @ Mar 25 2009, 09:51 PM) index.php?act=findpost&pid=762246

Well the quality of the fuel is also important. Plus 91 is considered the lowest octane on stock piston, 93 for 12.5:1...[/b]

Thanks man, I really appreciate the help and input!

That's why I love this forum... learn something new almost every day.

08_nismo

· #15 · Mar 26, 2009

QUOTE (SpillDaThrill @ Mar 25 2009, 06:54 PM) index.php?act=findpost&pid=762249

Thanks man, I really appreciate the help and input!

That's why I love this forum... learn something new almost every day.[/b]

I don't know of any places that sell 91 around me so I just run 93.

Oregon's Finest

· #16 · Mar 26, 2009

QUOTE (08_nismo @ Mar 25 2009, 06:53 PM) index.php?act=findpost&pid=762247

I have never heard that at all. Kind of an interesting concept though.

But I do know that higher octane gas will not make anything faster or give any more power. It just gives you the ability to tune it with more power. the higher octane helps prevent detonation and allows for much higher compression and allows you to advance your timing much more then normal fuels.[/b]

Definitely allows for more power through higher compression. But will lower power on a stock machine compared to premium pump.

Race fuel is also a much higher quality fuel than most pumps. Ideally you would run a 93 octane race fuel, but the benefits really aren't worth the price for most.

08yfz45031

· #17 · Mar 26, 2009

if you go beyond 91like 87 the piston might get off balanced, like the detonation is not as even and pushes down harder in some places then others and causes the piston to go down on a angle sometimes.

08_nismo

· #18 · Mar 26, 2009

QUOTE (Oregon's Finest @ Mar 25 2009, 06:58 PM) index.php?act=findpost&pid=762252

Definitely allows for more power through higher compression. But will lower power on a stock machine compared to premium pump.

Race fuel is also a much higher quality fuel than most pumps. Ideally you would run a 93 octane race fuel, but the benefits really aren't worth the price for most.[/b]

Yeah race fuel has a lot less additives and contaminants it.

Oregon's Finest

· #19 · Mar 26, 2009

QUOTE (08_nismo @ Mar 25 2009, 06:58 PM) index.php?act=findpost&pid=762251

I don't know of any places that sell 91 around me so I just run 93.[/b]

You need to find that 91 and get that extra 1/500th of a horsepower

JK man, its not important at all. I've always run 93. I noticed a little difference when i went to a 12.5:1 piston but nothing significant.

08_nismo

· #20 · Mar 26, 2009

QUOTE (08yfz45031 @ Mar 25 2009, 07:00 PM) index.php?act=findpost&pid=762254

if you go beyond 91like 87 the piston might get off balanced, like the detonation is not as even and pushes down harder in some places then others and causes the piston to go down on a angle sometimes.[/b]

Its not that it throws it off balance its that it predetonates and causes knocking. Our bikes have way too much compression to run 87 octane fuel. Predetonation can destroy all kinds of things.

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