Maintenance & Technical > KX500 Original

Race Fuel

(1/7) > >>

trouble:
I live in Cincinnati and the elevation around the area is around 1000ft.  What I'm wanting to do is run straight race fuel in my k5.  Right now it runs great with a 168 main, 58 pilot and 3rd clip on the needle.  My previous bike had a pro circuit engine and would only run on race fuel.  When I first bought it I ran a tank of pump gas through it and every time I pulled in the clutch it wanted to run away because it was so lean.  Can someone give me some advise on the changes I should make to my jetting.  I'll be running 110 cam 2 and my bike has a DG pipe, pro circuit silencer, and pro series reeds.  I know leaner is meaner so I want to go as lean as I can.  I will do a plug check to see how it's running.  I would appreciate any help on this matter.  I'm sure there are others out there that have done the same thing so help me out guys.

Friar-Tuck:
  Hey Trouble... :x
No pun intended! :-D
  Welcome to the club,
 I searched real quick and there was lot's of hits on race fuel, I didn't know where to start.
   There were more discussions about VP race fuel than any of the others I saw off hand.
 I'll look and see if the Cam II 110 has a VP equivalent. that might get a few more guys to jump in if they have something to compare it to.
  Tuck\o/

DoldGuy:
Trouble,
What type of head are you running? From the info gathered here I don't think you will see any benefits running 110 on a stock head. Our members JFAB in Missouri & Larry Wiechman in Illinois can set your head up to utilize the benefits of running the 110 & then you will see the performance gains with out detonation which kills power & a motor. Search the site for head mods to see what fits your need.
DoldGuy

Friar-Tuck:
  O.K.
 Now we're getting somewhere,

--- Quote ---CAM 2 RACING GASOLINE

"Cam 2" is the generic name used for Sunoco Race Fuels. You can expect the same consistent high quality performance from Cam 2 Racing Gasoline that you get from Sunoco Race Fuels because the names are interchangeable. It is the same product, made in the same facility by the same people. We use this name wherever the "Sunoco" brand name cannot be used, such as gasoline outlets which carry a competing brand of street gasoline.  Cam 2 is available in 110, 112, and 116 octane leaded, and 100 and 104 unleaded.  Please refer to the specs and MSDS for the Sunoco fuels listed above.
--- End quote ---

 So I'm guessing this is the cam II / Sunoco fuel you are refering to.
 SUNOCO STANDARD RACING GASOLINE

Sunoco?s all-purpose race fuel with a winning heritage. Whether you road race or bracket race, run the short ovals, or pilot a race boat or motorcycle, Sunoco Standard provides consistently high performance and helps protect engines with static compression ratios up to 14:1 against harmful detonation.
Fuel Property    

Typical Specifications
Specific Gravity    

.728
Lbs./gal.    6.03
Pump Octane (R+M)/2    110
    RON, Research Octane    115
    MON, Motor Octane    105
Reid Vapor Pressure    8
Distillation, ?F    
Initial Boiling Point    90
10% Evaporation    160
50% Evaporation    220
90% Evaporation    260
Final Boiling Point    360
Leaded    Yes - off road use only
Color    Purple
Oxygen, Wt.%    None

Let's see what VP has as a comparison so the guys can give you an Idea what you'll need to
  do to the engine (As DoldGuy stated,) to utilize this fuel.

How about this?  Would this be somewhat close to the Sunoco/CamII
 you want to use?

   SPECIFICATION SHEET FOR C-12
VP C12?
The best all around racing fuel made. Recommended for CRs below 15:1, satisfying the needs of 75% of today's race engines. One of the winningest fuels in racing history, including AMA, NHRA, Modified Tour, GNN, D.I.R.T. and Indy Lights, as well as other local and national championships across the U.S. and around the world. Very popular among Sportsman motorcycle drag racers requiring superior consistency.

      (Typical Values) Specific Gravity: .717 @ 60F

Lead: Yes      Color: Green    Motor Octane: 108   Reid Vapor Pressure: 7.3

Oxidation Stability (min.) 1440+   

 Distillation: 10% evap @131.0?F

50% evap @194.0?F

90% evap @228.0?F

E.P. @233.3?F

Production: Elmendorf, Texas USA

Availability: Sealed Drums

Rev: 07/00

 Tuck\o/
 

jfabmotorsports.com:
I have said it before. Maybe about you, if not I should have. Friar, you are a plethora of information, a regular fountain of knowledge.

JFAB

Navigation

[0] Message Index

[#] Next page