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stocer
09-16-2003, 10:22 PM
drag engine with 21 cc heads.anyone try high oxegenated,like VPs ultimate4??

Fast Fred
09-21-2003, 05:18 PM
best be 100oct or better or its going to melt:eek: :eek:

stocer
09-21-2003, 08:38 PM
i was a little nervous ussing VPs ultimate 4,because it is only 92.5 motor octane!!!!!!!!!i did retard timing two degrees and richen it up by four percent.i noticed a small gain,but at ten bucks a gallon,hard to justify!!

Fast Fred
09-21-2003, 08:53 PM
25cc and less must run 100oct or more or it WILL melt,:eek: :eek:
at about 17 deg advance, try some 102 , its about 5 bucks a gal :cool:

Barefoot Bob
09-21-2003, 08:59 PM
Ran Sunoco Standerd 110 in the Honda 250 CR. Talked with Sunoco and they told me to try the GP104 oxegenated. That was the fuel to run. Started selling it to all the sled racers also(hill climb and sno cross) They all built the most power with 2 cycle motors 104 octane. But oxegenated fuels are illegal in most classes.

paul folks
09-30-2003, 06:39 PM
agree with bearfoot i run that fuel in my van, boat, bike, and my sons goped, and 250r quad racer

KMA1/4master
12-12-2003, 10:39 AM
there are so many superstitions to the chemical warfare of 2-stroke fuels and additives that libraries cuold be filled on this topic .I don't know what my opinion may be worth but there was a time when it carried a punch ,the best fuel oil combination i ever found was unocal 110 with klotz syn oil at 3 oz per gal this mix gave pyro numbers about 100 degrees cooler than sonoco or vp and allowed me to run a leaner air fuel ratio (more power)safely
you must remember oil can burn hotter than fuel it but fuel has a lower flash point .specific gravityis one of the most important values of fuel.learning to master the properties of the fuel,oil combo you choose and how much to flow thru the orfice or injector take alot of testing ,plug reading ,guts ,and a sore butt,
then again thats just my opinion and what do I know anyway

stoker2001
12-12-2003, 07:16 PM
thanks for reply,i turn 9700 on a good day so i could never run that lean of an oil mix.need 30 to 1 minimum.will run IHBA boat drags this year,it will take the ultimate tune plus 350 ponies out of the 2.5 drag with my setup to run ten flat class (no N20).they dont have fuel restrictions so anything goes.will run best race gas money can buy as to help me get to 10.0 et

Fl Boy in ILL
12-12-2003, 09:21 PM
What kind of boat are you running, we also run brackets and have several in our class running 10s or high 9s with outboards. Just curious we may be able to help you, none of us in 10s are running NOS.

Rick

stang
12-12-2003, 09:44 PM
go to vp web site read about motor octane people on here say run 100 octane but they dont know what the motor octane schould be they just say 100 octane spec. grav. has alot to do with how much fuel you run also what the oxgenarted fuels also Read the piston it dont lie

stoker2001
12-12-2003, 11:22 PM
thanks again for replys,my boat weighs 1475# with my fat but in it. drag motor has porting with 21 cc heads,will run xr6 case with 22 yamy drag prop.my buddy ran his mirage last year at IHBA,same boat just 100# lighter,stock drag with 21 cc,sporty case at 10.14@95 mph.i am thinking mine will be right there with him

Raceman
12-13-2003, 12:29 AM
"they dont have fuel restrictions so anything goes.will run best race gas money can buy as to help me get to 10.0 et"

Higher octane doesn't equate more horsepower. Octane in excess of what's required to control detonation usually costs horsepower.

stoker2001
12-13-2003, 12:33 AM
thanks raceman for input.i was thinking i will run high dollar oxegynated fuel from vp or sunoco.the vp ultimate four retails for ten plus bucks per gal

Fl Boy in ILL
12-13-2003, 12:39 AM
Nice boat first of all.

What kind of R's are you turning? We have a Mirage Polecat running 10.8s to 11.1s at the same speed 95-98 mph, running a 24 Yami. Is your case a 1.87?

At 1475 is a bit heavy to run 10.0s, can you reduce weight? Rear seat, batteries, smaller fuel tank, etc. In bracket racing you need quick and weight will hurt that. I assume that that boat is a Jaguar which is not as quick as our Mirage. THere are several folks here on S&F that run brackets and are willing to help, Ron Morton ran a Mirage in 11,s but had to run a good bit of weight to slow down, Ray Neudecker has helped us a TON (we bought the Polecat from Ray), if I can help don't hesitate to ask. Good luck

Rick

stoker2001
12-13-2003, 01:08 AM
mine is the white/red boat and has never been at the drags.they are both 97 brad collins jaguar river racers.the all white boat is lighter layup and it ran 10.14@95 ussing sporty case with 1.87.he was runnin steve tillman et copy 22 pitch with entire trailing edge cupped.this prop leaves real hard,but seems to hit a wall at around 1000 foot mark,hence the low trap speed.we will both be switching to xr6 cases this season with 1.78.i am a little worried about my weight,but i am confident i can get et down to at lleast ten teens.eleven second class would not be fun in my opinion considering that this is a rr.my drag block is getting a lot of porting done by richs (he took third at jasper in pro gas)and i should be turnin 10000 after all mods.

Barefoot Bob
12-13-2003, 11:56 AM
I was selling the oxygenated GTplus 104 Sunoco for $4.75 a gallon. Its probably more like $5.00 or 5.50 now. I am going to start selling again. 55 gallon barrol minimum, its to bad your so far away.

MODIFIEDOUTBOARD
12-13-2003, 11:42 PM
VP C-14 is good for high compression(230 lb) high rpm(8,500) two strokes.
It burns faster than C-12 and we have to jet up to use it.

KMA1/4master
12-14-2003, 12:05 AM
i'm not sure i would trust the consistancy of oxygenated fuel without a **** load of testing but it seems very clear that RACEMAN and I share some common theories .

MODIFIEDOUTBOARD
12-14-2003, 09:05 AM
VP C-14 is not oxengnated though just good race gas that burns fast!

VP makes ultimate 2 which the watercraft people say is the best thing they have tried to date, I am not allowed to use it.

stoker2001
12-14-2003, 09:44 AM
VP racing fuels have two types of oxegenated.mr2 is like four percent with 102 motor octain.ultimate4 is eight percent with motor octane of 93.runnin 21cc heads (220 pounds cranking) i was a little nervous runnin 93 motor octane,i did fattin ecu to 105 percent and backed timing off a couple degrees.motor seemed to like it (seemed to have a little better throttle response and might of picked up 100 rpm).still hard to justify cost at ten bucs a gallon

MODIFIEDOUTBOARD
12-14-2003, 03:31 PM
I chose VP because of the technical info that they offer.
Send them a email they will respond.
The just renamed 2-stroke oxogenated Ultimate 2.

I would try the C-14 , 114 motor octane, and faster burn rate than simular high octane race fuels. May be able to add oxogenator to it? It is expencsive we pay $45/ 5 gal.

C-14 is recomended for high cranking comp (230 lbs) and higher RPMS 8,500+ the faster burn rate really helps at higher rpms.

we noticed improvement in over rev

stoker2001
12-14-2003, 03:47 PM
i agree VP fuels are the bomb,nobody comes close to the selection they have.i will give c-14 a try.i think you could cut it with 25% pump gas with my combo.do they still have the ultimate four?did they rename mr2=ultimate2 now

Firestarter
12-15-2003, 10:39 AM
VP DRT, or C-44 I don't think they still make it, but if you call them they might tell you more.

sean181
12-22-2003, 05:19 AM
Have hade good results with Elf (moto124) it is a oxegynating fuel of about 2.6% from memery its octaine is about 120. Have still some left for trailling and cant find anything wich is as good and burns so so clean :) have to read pistons as there is nothing to see on plugs. Can't get it here in Aus anymore as it a leaded fuel and its banned not sure what rules are in the US. About $8:50 a litre!

Travis Fulton
01-19-2004, 05:31 PM
certain fuels for certain compressions!!! only use high octane fuels with high compression motors, some people put h/o fuels in stock motors when in essence they are killing power !!!!! i have seen people at the races needing fuel for a generator and dump in some 110 and it will not start!!!! not enough comp to burn it!!!!!! kinda like running 93 in a late model auto ???!!! it dosent need it! so what fuel makes the most power ?? it really depends on the mota.;)

Barefoot Bob
01-20-2004, 08:15 AM
I have run 110 or 104GT Plus Sunoco in my lawn boy and my weed wacker. They run better that 93 octane and the smell makes it a pleasure to do the lawn.;)