VP spec fuel at the track

[KB]

So this 45 dollars a 5 gallon pail stuff. What exactly is it and is it worth the extra cake?

I have heard that there is no advantage unless you need the higher octane cuz you have a high compression engine. Anyone know the real deal and care to share with an idiot like me?

KB

[BLACK SQUIRREL]

C-12 For high compression Built Motors Keeps them from Blowing up (45.00)

Ask your motor builder if you need it.

[Pittenger5]

Non-spec fuel adds 45 horsepower to my EX, thats why Ive been so slow, they caught me running the illegal fuel a couple weeks ago.

[OreoGaborio]

Lose weight... it's cheaper & it'll make you way faster

[KB]

I checked with my motor guy........(it's me) and he said he didn't know.

I'd rather pay for horsepower than loose weight.

KB

[Paul_E_D]

Wait, C-12 is 45 bucks a pail at the track? Might be worth the drive up to buy a few. I'm paying like 60 now...

[KB]

I could be wrong on the price paul. Thought that's what i heard??

KB

[KB]

I guess my question is....in a stock motor will I notice the extra cash in HP?

KB

[Awesome]

How about you give me this extra cash you have to spend, cause I know I don't have any.

[Slyder]

I guess my question is....in a stock motor will I notice the extra cash in HP?

KB

You need to tune the engine to run on whatever you chose for a race fuel. You can effectively decrease performance with a race fuel if you don't tune the engine to run on it.

Notice the extra cash? yea, you'll notice the wallet a good bit lighter

You'd have to ask around and see what kind of results people got running whatever fuel in a stock engine. You could get an increase with no tuning, you could get a decrease with no tuning. You could get an increase from one fuel and a decrease from another. etc.

[KB]

I don't have any extra cash and I am only doing one race again this weekend because if this. I ws just trying to understand this fuel stuff.

KB

[Sheppo]

I found when I raced cars that the 'race gas' was cleaner and more consistant then what you got at the pumps. My engine was right on the edge of needing it or not 11:1 compression. I ran it 50/50 with super unleaded and tuned for that. Saved me some $ and the car ran better.
plus I like the sweet smell

[BLACK SQUIRREL]

I found when I raced cars that the 'race gas' was cleaner and more consistant then what you got at the pumps. My engine was right on the edge of needing it or not 11:1 compression. I ran it 50/50 with super unleaded and tuned for that. Saved me some $ and the car ran better.
plus I like the sweet smell

In that case You would run The VP Street blaze (which is like a 93/94 octaine unleaded But with out ethenol ect)

[Slyder]

Well I think I am mostly right.

In my own experiences though, I had a 2001 gixxer 750, I ran 4 gallons of sunoco 110 octane in it. The only difference between the 110 and 93 was, it sure smelled pretty. Aside from that, and the silver soot in the tip of the can, I noticed no difference. I didn't dyno the bike or anything, so if there was an increase or decrease, it was small.

Are you restricted to the fuel you can run for the class ?
I heard VP MR9 was good for upwards of 10hp, obviously after a tune and probably on a 1000....but it might be worth a try. I dunno.

[Slyder]

MR9
Designed for 4-stroke applications that can tolerate lower actane values. Makes up to 8% more power than pump gas and up to 2% more power than MRX01. Used by every champion in AMA Superbike Pro classes in 2004 and 2005, as well as the Supermoto, Supermoto Lite and Supermoto Unlimited championships in 2005. Although currently not legal in AMA Pro Racing, MR9 passes fuel rules for AMA amateur racing as well as club level racing, CCS, WERA and AFM.

• Color: Clear
• Oxygenated: Yes
• Motor Octane: 87
• Specific Gravity: .718 at 60° F

[BLACK SQUIRREL]

Well I think I am mostly right.

In my own experiences though, I had a 2001 gixxer 750, I ran 4 gallons of sunoco 110 octane in it. The only difference between the 110 and 93 was, it sure smelled pretty. Aside from that, and the silver soot in the tip of the can, I noticed no difference. I didn't dyno the bike or anything, so if there was an increase or decrease, it was small.

Are you restricted to the fuel you can run for the class ?
I heard VP MR9 was good for upwards of 10hp, obviously after a tune and probably on a 1000....but it might be worth a try. I dunno.

Your are mostly correct, However I think its more then a tuning thats needed to reap the benifits of higher octaine. I think you have to change the compression ect, then remapp or tune to get the full benifit.

But who knows? I could be wrong

[Slyder]

Ahh but see above, MR9 is only 87 octane

MR11 is 90 octane.

Just trying to help a fellow out, more power is a good thing

Actually MR11 might be a better choice, it looks as if it's legal in more classes of races.

MR11™
Recommended for 4-stroke applications where octane requirements are fairly low, e.g. Supersport, Superbike, Formula Extreme, Supermoto and MX. Delivers up to 6% more power than pump gas and any basic nonoxygenated racing fuel. AMA legal except Supercross and Outdoor Nationals.

• Color: Yellow
• Oxygenated: Yes
• Motor Octane: 90
• Specific Gravity: .749 at 60° F

[Sheppo]

In that case You would run The VP Street blaze (which is like a 93/94 octaine unleaded But with out ethenol ect)

it wasn't an option where i bought my fuel

[Sheppo]

Your are mostly correct, However I think its more then a tuning thats needed to reap the benifits of higher octaine. I think you have to change the compression ect, then remapp or tune to get the full benifit.

But who knows? I could be wrong

that's true I had the carb reworked, the ignition reworked, a specific cam and the timing set for the optimal (sp?) performance, per the engine builder, not me I maintained I didn't built it.

[eboos]

Keep in mind that only Streetblaze, C-12, and the 93 pump gas that is right outside of the track at the Shell station is legal for LRRS regardless of whatever may be CCS legal.

http://www.lrrsracing.com/2008/LRRS_Fuel.pdf

[Slyder]

Well there ya have it. I had no idea what kinda rules / regs LRRS events have regarding race fuels. I read them before but that was awhile ago.

looks like street blaze would be the way to go

[Crash Dummy Denno]

Lose weight... it's cheaper & it'll make you way faster

+1

[a13x]

KB: C12 does dick for HP. It's just a very high octane gas for highcomp motors, so they don't ping. 93 causes my bike to ping, so I have to run higher.

One of the reasons for the spec fuel was to do away with HP Fuels that someguys ran and some didn't. (one of the reasons).

One thing you can do to make your $$$ C12 last longer is cut it 50/50 with 93 octane, which I've done. Makes that $$$ pail of gas go a bit longer and still keeps your motor from ping pinging.

The fuels like MR9 add HP

[Paul_E_D]

The answer is... maybe! C12 is a leaded fuel with about 112 octane I believe. It allows a builder run tighter squish in the cylinderhead and a smaller chamber (high comp). These things will get you a punchier bike.

The fuel alone will have a different burn rate (slower) than pump fuel. Depending on the dynamics in your head (ha!) this could give more power... or less!

I hope this helps

and ya, oxygenated fuels add power just like nitrous would...

[a13x]

The answer is... maybe! C12 is a leaded fuel with about 112 octane I believe. It allows a builder run tighter squish in the cylinderhead and a smaller chamber (high comp). These things will get you a punchier bike.

The fuel alone will have a different burn rate (slower) than pump fuel. Depending on the dynamics in your head (ha!) this could give more power... or less!

I hope this helps

Well yes but it's not like MR9 where you dump it in and get 3-5 HP.