VP MR8 Race Fuel

S

Superchief

Member

Feb 11, 2003

103

0

• May 12, 2003

• #1

I have been running nothing but C-12 in my 03 Cr250R since i bought it last september. I have been thinking of trying out some MR8 just to see if the bike runs any better with 112 octane fuel. Anyone using this fuel or have any thoughts about it? I Would problably have to jet the bike to the richer side for the increase in octane? Thanks in advance

 

H

hoosierf

LIFETIME SPONSOR

May 6, 2001

325

1

• May 13, 2003

• #2

Incoming!

 

W

whyzee

Never enough time !

LIFETIME SPONSOR

Dec 24, 2001

2,282

0

• May 13, 2003

• #3

Don't worry to much about chasing octane.
Look for low evaporation points & low gravity properties.

 

M

MikeS

LIFETIME SPONSOR

Jun 12, 2000

716

1

• May 13, 2003

• #4

duck........ :)
Seriously. Check some other posts on fuel. You will learn octane means squat.

MR2 is better or the new MRX1 (whatever). MR2 has plenty of octane for a CR unless you have made serious mods.

 

Senior KX Rider

Super Power AssClown

Nov 9, 1999

8,575

0

• May 13, 2003

• #5

The MR2 works well in my KX. I have no experience with the MR8 or MR1. My experience with the MR2 you have to jet richer :)

 

Rich Rohrich

Moderator / BioHazard

LIFETIME SPONSOR

Jul 27, 1999

22,839

16,904

Chicago

• May 13, 2003

• #6

MR8 is not the appropriate fuel to run in the CR250. C12 or MR2 are much better choices.

 

steve125

LIFETIME SPONSOR

Oct 19, 2000

1,252

0

• May 13, 2003

• #7

Yep! It's a case of more is not always better. The MR-2 is a much better choice as Rich has said. I'd like to try the new MRX01 one of these days and see how it compares to the MR-2.

 

S

Superchief

Member

Feb 11, 2003

103

0

• May 13, 2003

• Thread starter
• #8

i Figured the guy where i buy my race fuel was just trying to make a sale!!! I have to find another place to get C-12 or whichever i chose to run cause all he's going to be selling is MR8 from now on. I Talked to a guy at the local sunoco station an they sell MX-114. Specifically designed for 2 stroke engines.
this stuff looks no better to me?

Fuel Property Typical Specifications
ASTM D297, Gravity, API 59.7
Specific Gravity, 60/60 0.740
Anti-knock Index (R+M)/2 114.0
RON, Research Octane 118.0
MON, Motor Octane 110.0
Sensitivity (R-M) 8.0
Distillation 0 F
Initial Boiling Point 90
10% Evaporation 138
50% Evaporation 220
90% Evaporation 255
Final Boiling Point 290
Reid Vapor Pressure 9.0
Leaded Yes
For Off-road Use Only
Color Yellow
Oxygen, Wt.%
2.7%