kfx440??racing fuel??

[kawi_kfx13]

Hey im just wonderin if i bored out my kfx 400 to a 440 do i have to run racing fuel? ive herd differnt thnks from lots of people so i figured i just ask the pros on atvriders.com lol if you could help me out that be great

[400eXr1d3rZ]

The bore of the cylinder doesn't determine if you run of race fuel or not. It depends on the compression piston you use.

[kawi_kfx13]

ok so like with this one here would i need to?


http://cgi.ebay.com/ebaymotors/BIG-BORE-440-KIT-SUZUKI-LTZ400-LTZ-400-Z400-Z440-12-5-1_W0QQitemZ120116078411QQihZ002QQcategoryZ43977QQr dZ1QQcmdZViewItem

[Chin_Chilla]

Originally posted by kawi_kfx13
ok so like with this one here would i need to?


http://cgi.ebay.com/ebaymotors/BIG-BORE-440-KIT-SUZUKI-LTZ400-LTZ-400-Z400-Z440-12-5-1_W0QQitemZ120116078411QQihZ002QQcategoryZ43977QQr dZ1QQcmdZViewItem VP-C12 100%...

[kawi_kfx13]

haha dude i have no clue wat VP-C12 100% is...im only 14 haha nd i dont anythin about racing fuel

[450robot]

Originally posted by kawi_kfx13
haha dude i have no clue wat VP-C12 100% is...im only 14 haha nd i dont anythin about racing fuel

and yet your going to build and tune a big bore?

[Mean250r]

Originally posted by 450robot
and yet your going to build and tune a big bore?

LOL i know right

HOORAY FOR NOOBS :D :D ;)

[troutman561]

The DG front "bumber" will cause race fuel to be needed.

[kawi_kfx13]

haha wow u guys r sure cool...ill never learn if i dont try...if i cant get it then my bro will do it..ive done how many 2 stroke motors..ive just never been any deeper then valves on a for stroke....give me a fckin break...all i wanted was a litle advice..

[Chin_Chilla]

VP-C12 is a type of racing fuel. It is 108 octane. So yes, you will have to run straight racing fuel. Looking at $8-9 a gallon... good luck with your build.

PS - Take it to a pro...:D

[kawi_kfx13]

thanks Chin_Chilla... nd ya ill just bring it to my local dealer

[Mean250r]

Originally posted by kawi_kfx13
thanks Chin_Chilla... nd ya ill just bring it to my local dealer

Make sure you put on the purple powerband before you touch the valves. Im not sure if your KFX has it or not, i know the newer ones do. But if you put it on the right way, it adds 10 MPH to the top speed

[400eXr1d3rZ]

Originally posted by Mean250r
Make sure you put on the purple powerband before you touch the valves. Im not sure if your KFX has it or not, i know the newer ones do. But if you put it on the right way, it adds 10 MPH to the top speed

The 2007/2008 KFX-400's do :p

[troutman561]

Originally posted by kawi_kfx13
haha wow u guys r sure cool...ill never learn if i dont try...if i cant get it then my bro will do it..ive done how many 2 stroke motors..ive just never been any deeper then valves on a for stroke....give me a fckin break...all i wanted was a litle advice..

My comment wasnt being an ***** it was just to basically encourage you to spell bumper right in your sig so you dont come off as an idiot and people can take you seriously...

[416exfreak]

What they meant was that youll be using a feul called "C-12" thats made by VP Racing Feuls

And it has to run on only that gas...no pump gas, C-12 costs me about 8 dollars a gallon for my 440ex...what fun!:p