Maintenance & Technical > KX500 Original
Race Fuel
DoldGuy:
--- Quote from: jfabmotorsports.com on December 14, 2009, 03:18:02 PM ---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
--- End quote ---
As I have called him before "The Typing Encyclopedia".
We are lucky to have so many diverse talents here "Shared"
DoldGuy
Polar-Bus:
I run straight CAM II, and also run the optional thinner .2 MM head gasket. I jet down in the summer to as lean as a 162 main, and then adjust richer as colder temps move in... I still have a dark chocolate plug read, so I could probably even jet leaner, but I don't flirt with possible meltdown disaster. My 5 runs perfect and never had any symptoms of detonation. The great thing about running uncut race fuel is you get very precise plug reads. Like other commented, race fuel doesn't make hp, race fuel only prevents the possibility of detonation...
Motorrad:
For those that may not know.
Specific gravity (sg.)
and
oxygen content
Are the two major players in jetting change when you change fuels
Friar-Tuck:
There you go Trouble,
Polar B Not only runs the same fuel your looking at, But there are some great things tucked away
in the other posts also.
I'm sure with a tad more info on what kind of riding your doing, and future engine/suspension mods, the guys can help you put together a plan that can significantly save you time and money
in the long run.
Oh yea, speaking of Money... how much (Ballpark) do you have to put in your engine package.
I don't say this to be a kill joy. This has a direct relationship on maintenance
and how much priority is put on HP and or reliability.
Tuck\o/
maddoggy:
high octane fuel is one small portion of the whole package of performance. i'll probably get posted to death for saying this but this is and will remain my opinion of race fuel."unless your engine is producing predetonation you do not NEED race fuel, although the performance may increase slightly". this being said, pump gas is getting to be of such poor quality that it evaporates much more quickly than it did 10 years ago. thats not because it is HOT either it is just terrible formulas currently. for average riding i mix race fuel 60-40 with premium pump gas. for high demand ie..sand riding i use 100% race fuel to wring out every ounce of hp the k5 can give. not very scientific i know, my experiences and humble opinion only.
MADDOGGY
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