« previous next »
Pages: [1] 2  All   Go Down

Author Topic: oxygenated Race Fuel  (Read 10772 times)

0 Members and 2 Guests are viewing this topic.

Offline Graham

  • A-Grade
  • ****
  • Posts: 309
  • Fast TT meets Drunks Hill
    • View Profile
oxygenated Race Fuel
« on: March 24, 2016, 06:03:04 am »
Have heard of some very good results with this stuff, a couple of different brands available. Anyone know if its ok to use in VMX
Logged
Gosh its a shame a slow 4 stroke trail bike can go so Fast !!

Offline Nathan S

  • Superstar
  • ******
  • Posts: 7275
  • HEAVEN #818
    • View Profile
Re: oxygenated Race Fuel
« Reply #1 on: March 24, 2016, 08:03:01 am »
I'm pretty sure it is MA legal.
Even if it isnt, they won't have a way to test for it...

Be aware that you will need to reconfigure your motor to make it worthwhile.
Datsun L-series motors that were making 105kW on AvGas, went to 107kW by simply filling with Elf. With a rebuild and retune, they went 115kW on Elf.
With a rebuild and retune to suit 98 pump fuel, they made ~108kW.
Logged
The good thing about telling the truth is that you don't have to remember what you said.

Offline curly001

  • B-Grade
  • ***
  • Posts: 264
    • View Profile
Re: oxygenated Race Fuel
« Reply #2 on: March 24, 2016, 08:41:22 am »
It's MA approved, but you need to re jet for the additional fuel required.
I use VP fuels.
Logged

Offline sleepy

  • Legend
  • *****
  • Posts: 805
    • View Profile
Re: oxygenated Race Fuel
« Reply #3 on: March 24, 2016, 12:22:02 pm »
Quote from: Nathan S on March 24, 2016, 08:03:01 am
I'm pretty sure it is MA legal.
Even if it isnt, they won't have a way to test for it...

Be aware that you will need to reconfigure your motor to make it worthwhile.
Datsun L-series motors that were making 105kW on AvGas, went to 107kW by simply filling with Elf. With a rebuild and retune, they went 115kW on Elf.
With a rebuild and retune to suit 98 pump fuel, they made ~108kW.

Just looked at the Homologated fuel list and ELF is not listed. MA have fuel testing procedures in place but proabably don't bother.
Logged

Offline KTM47

  • Legend
  • *****
  • Posts: 1412
    • View Profile
Re: oxygenated Race Fuel
« Reply #4 on: March 24, 2016, 01:09:29 pm »
email MA [email protected] and ask about ELF.

It doesn't worry me I use 95 RON pump fuel and use maxima octane booster.  The 99 and 98 RON fuels are designed for fuel injected cars and may not be compatible with 2 stroke oil and engines.
Logged
MAICOS RULE DESPITE THE FOOLS

1999 KTM 200, 1976/77 KTM 400,1981 Maico 490

Offline Andrew L

  • Legend
  • *****
  • Posts: 518
    • View Profile
Re: oxygenated Race Fuel
« Reply #5 on: March 24, 2016, 01:23:03 pm »
The higher octane pump fuels aren't always that good either as I was told that not many people buy it and it sits in the servo tanks and deteriorates. I go with the 95 and fuel additive as well.
« Last Edit: March 24, 2016, 04:44:07 pm by Andrew L »
Logged
"You have not made any mistakes if you find extra pieces after assembling an object. In fact you have just found a way to make the object more efficient."

Offline sleepy

  • Legend
  • *****
  • Posts: 805
    • View Profile
Re: oxygenated Race Fuel
« Reply #6 on: March 24, 2016, 01:53:26 pm »
Quote from: KTM47 on March 24, 2016, 01:09:29 pm
email MA [email protected] and ask about ELF.

It doesn't worry me I use 95 RON pump fuel and use maxima octane booster.  The 99 and 98 RON fuels are designed for fuel injected cars and may not be compatible with 2 stroke oil and engines.

Don't the rules specificaly state that no additives other than lube oil are permitted?
« Last Edit: March 24, 2016, 03:06:46 pm by sleepy »
Logged

Offline Slakewell

  • Legend
  • *****
  • Posts: 3577
  • Slakewell Motordrome
    • View Profile
Re: oxygenated Race Fuel
« Reply #7 on: March 24, 2016, 03:25:22 pm »
Not a great idea for air cooled engines. Some of these fuels run hot.
Logged
Current bikes. KTM MC 250 77 Husky CR 360 77, Husky 82 420 Auto Bitsa XR 200 project. Dont need a pickle just need to ride my motorcickle

Offline Lozza

  • Legend
  • *****
  • Posts: 4206
    • View Profile
Re: oxygenated Race Fuel
« Reply #8 on: March 24, 2016, 05:17:38 pm »
Quote from: Graham on March 24, 2016, 06:03:04 am
Have heard of some very good results with this stuff, a couple of different brands available. Anyone know if its ok to use in VMX

Works well but you need to tune the engine to it.
Logged
Jesus only loves two strokes

Offline PEZBerq

  • Legend
  • *****
  • Posts: 1094
  • Brisbane
    • View Profile
Re: oxygenated Race Fuel
« Reply #9 on: March 25, 2016, 11:28:18 am »
2016 MOMS

Logged
Husqvarnas: 78 390AMX, 82 430XC, 84 240WR, 84 500AE, 84 510TE, 87 510TE

Offline Graham

  • A-Grade
  • ****
  • Posts: 309
  • Fast TT meets Drunks Hill
    • View Profile
Re: oxygenated Race Fuel
« Reply #10 on: March 25, 2016, 01:12:12 pm »
Quote from: PEZBerq on March 25, 2016, 11:28:18 am
2016 MOMS



So that would make any of the oxygenated fuels illegal to use. And at $ 20 per litre youd have to be pretty desperate
« Last Edit: March 25, 2016, 01:14:42 pm by Graham »
Logged
Gosh its a shame a slow 4 stroke trail bike can go so Fast !!

Offline KTM47

  • Legend
  • *****
  • Posts: 1412
    • View Profile
Re: oxygenated Race Fuel
« Reply #11 on: March 25, 2016, 01:22:37 pm »
Yes for this year and maybe the next that is the rule.

However there is a letter from the Aust Government that basically says they intend to phase out the use of leaded fuel over a two year period starting from 2017.

So you can use those fuel now, but for how long?
Logged
MAICOS RULE DESPITE THE FOOLS

1999 KTM 200, 1976/77 KTM 400,1981 Maico 490

Offline Lozza

  • Legend
  • *****
  • Posts: 4206
    • View Profile
Re: oxygenated Race Fuel
« Reply #12 on: March 25, 2016, 02:49:24 pm »
Avgas won't be phased out.
Logged
Jesus only loves two strokes

Offline sleepy

  • Legend
  • *****
  • Posts: 805
    • View Profile
Re: oxygenated Race Fuel
« Reply #13 on: March 25, 2016, 04:44:40 pm »
So at the moment you could use an leaded fuel like VP Q16 with an octane of 116 octane and is highly oxygenated but if a fuel is unleaded it can only be 100 octane.
Still looks like using the Maxima octane booster is not permitted.
Logged

Offline Rossvickicampbell

  • Legend
  • *****
  • Posts: 3779
    • View Profile
Re: oxygenated Race Fuel
« Reply #14 on: March 25, 2016, 04:51:52 pm »
how could someone know you had octane booster added?
Logged
1974 Yamaha YZ360B
1980 Honda CR250R - Moto X Fox Replica
Pages: [1] 2  All   Go Up
« previous next »