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The point is, they spend more time at altitude and that fuel has to cover a huge range, in a slow turning engine relatively low compression engine.
Now, that being said, if someone wanted to cut C12 in order to save some money, it would probably be better to use 100LL and C12 at 50/50 than to use an ethanol fuel.
Use pump gas then. Tier 1 type is the cleanest burning.
"I would like to run something leaded for the added protection to the engine."
Lead will not add any appreciable amount of protection to the engine, just use very good oil. Group IV and Group V are the best base oils to use.
"I've heard oxygenated fuels go bad really quickly?"
Not exactly but it is best to store any fuel in a metal container out of the sunlight and way from extreme temperatures etc. The biggest "problem" with most fuels is that the ones that are mixed with alcohol are more susceptible to getting moisture in them. If they get enough moisture in them the alcohol will separate from the gasoline.
"I would probably be running 50/50 with pump 91."
There are several threads on boating sites on the net stating that mixing fuel that contains MTBE with fuel that contains alcohol can cause a gel to form. I did this for a performance test and left it in my bike for a week and did not see any gel form. I then called VP and asked them about what I read and they said they never heard of such a thing ad don't know how it could happen. I suppose one could simply get a sealed glass jar and mix the two fuels an let it sit for a few weeks to see if any gel forms or if there is any separation etc.
"Anyone know any good articles about using race fuel in a dirt bike?"
There will be a zillion different opinions and very few facts so you have to take what you read with a grain (or a pound) of salt.
"I read a decent article on mxa about VP stuff but personal experiance from people would be appreciated."
Since VP makes around over 50 different fuels, I don't know how useful that article might be but I haven't read it.
"Thanks for anything you guys can teach me."
Unless your bike automatically adjusts the AFR, you will likely need to change it with just about any fuel you run.
As far as just improving performance, you will get more power from MS109 then from most other VP fuels and from pump gas providing your AFR is set up for it. I did a back to back test comparing it to Shell 91 octane in California and the power increase was noticeable ad the engine revved higher. Many people running personal watercrafts also use it and many say the same thing.
According to VP, in general, fuel with MTBE will burn faster then fuel with alcohol if all else remains the same. This does not mean that fuel with MTBE is better then fuel with alcohol. The two different fuels just have different applications.
Most race fuels actually reduce power and throttle response if an engine is not properly tuned to optimize their potential, but unfortunately there are many people that get a placebo affect when switching from pump gas to "race fuel" that then inaccurately claim how much more power their engine had after dumping in something they just paid $14.00 a gallon for. If you don't believe me just try some normal pump gas (which is 10% alcohol in California right now) and then try some E85 which is 85% alcohol.
The Shop
T2 and vpr are ideal fuels for 2 strokes due to the lead content but vpr can still be ran in 4 strokes, as well as vp110 or c12. Whatever you do DO NOT RUN aviation fuel in your fuel injected 4 stroke...way to high of a lead content which if used can and most likely will eventually damage your injectors. It's fine for 2 strokes though...just not the new injected ktms.
I obtained a nice chart and fuel guide from vp that should help you a lot with selecting a fuel and separating the facts from fiction that's on this forum topic....ill upload a couple pics tomorrow when I get in to work.
Nope.
"T2 and vpr are ideal fuels for 2 strokes due to the lead content "
Nope.
"especially t4 with it being oxygenated."
Any fuel that has alcohol or MTBE has oxygen.
Ummm...thanks for the compliment but I am certainly no expert on it, however, it's obvious to me that I know more about fuels then you do.
"Not sure how u can argue ethanol free isn't an advantage/benefit,"
"The biggest advantage I think with most race gas is it's ethanol free."
Ummm...my reply did not specify exactly what aspect of your comment I was replying to, but it is inaccurate, or at least a bit misleading, to claim that "most" race fuels do not have ethanol. Just because a fuel does not state it has ethanol or alcohol etc, it is not safe to assume that it does not. The best thing to do if one wants to know if a particular fuel has ethanol or ether's etc, is to call the manufacturer. Also, MTBE is used in some racing fuels and it is highly toxic and one should avoid breathing the fumes or getting it on their skin the best they can, but not all manufacturers state in their their fuels that have MTBE in it that it is in there.
"pump gas is garbage"
Ummm...really,? It seems to me that you think it is YOU that is the fuel "God", so please educate me and others here whom are ignorant about fuels, by explaining in simple terms exactly why it is garbage and why around 1 billion vehicles, including off road vehicles etc, run just fine on it? I for one will be waiting patiently for your reply.
"...everyone knows that."
Ummm...that is another grossly inaccurate assumption. You would embarrass yourself much less if you posted facts instead of opinions and/or assumptions that are posited as facts.
"And yes t2 and vpr are ideal for 2 strokes,"
Ummm...they will certainly work in a 2 stroke, but they are not necessarily the "best/ideal" fuel to use.
"sorry but ur wrong pal."
On occasion but not on this one.
"Ud really put fuel that's premixed with oil in a 4 stroke??"
Ummm...yet another inaccurate assumption or misunderstanding of my comments, You really should have someone try to help you with your poor reading comprehension skill.
""Hahahaha."
Ummm...I think many of the things you state are very funny too!
"Might smoke just a tad."
Ummm...congratulations, you finally got something right!
"You gonna call vp too and just say "nope"??"
Ummm...I started using some of VP's fuels around 1984 when I started racing in the pro 3 and 4 wheeler classes, and I occasionally used another brand of racing fuels prior to that when I was racing in the expert/pro motocross classes. I have spoken with people in VP's tech department several times over the years about fuels, and spoke with them again a few different times around 6 weeks ago.
"u" "ur" ""Ud"
Ummm...when attempting to berate someone to make oneself appear to be more intelligent than the person they are attempting to berate, it is advisable to spell correctly.
And the way you try to turnaround everyone's rebuttal is actually very troublesome---you need help. And thats not just MY opinion.
xlnt, we agree on something!
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BTW- this is a 3.5 year old thread ,so hopefully the OP had found his answer a while ago,lol.
Pit Row
Here's those charts I was referring to. As for the child on here that knows everything and is never wrong best bet imo is to just ignore him and hopefully he'll eventually get the hint that he's not wanted here. The guy is a tool and a troll and engaging him in an argument is what he feeds off of. And who knows maybe if we're lucky he'll get hit by a bus soon.
I agree with you that the way YOU try to turn around everyone's rebuttal IS very troublesome and YOU really do need help. And thats not just MY opinion, it's a FACT you really should go somewhere else and spout off your ego-boosting "knowledge", like perhaps a psychiatrist or maybe the "Doctor" Phil show.
Also, as expected, you are derailing yet another thread and have not posted one meaningful thing about the op's question, but instead are displaying your incessant need to feel superior to others by hijacking someone else's thread to use as your own personal podium in an attempt to serve your own emotional needs.
If you at least even tried to stick to FACTS regarding a threads topic, you probably wouldn't have these problems with others.
Hurry with your response, you'll be gone soon LMAO
I agree with everything you stated about oldslow or oldcrow or whatever his, or her, name is, but I actually find him, or her, amusing, but at the same time, it's actually unfortunate when someone is emotionally underdeveloped and unstable like he, or she, is, so I pity them a bit as well, and hope they get the help and nurturing they desperately need.
.
But really, all badgering aside, and in all seriousness, this is a real question for you to think about--- doesn't it bother you AT ALL that most everyone on here is busting your balls ?? And you've been thrown out of multiple other forums before you got here ??Just wondering how you feel about that.
You must be a lonely old dude. Hopefully you'll be out of our hair soon as well
Anyway, its getting late here on the East coast and I have a very busy day at the office tomorrow so I must bid you adieu
And Yes that's 9
Congratulations, and I'm surprised, and impressed that you can count that high.
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