I some find info from highlifter forums talk about new yamaha atv engine had 558cc for 2009 but one guy luck pick up cause from info carb epa info!

 

I read the same thing somewhere else...yami put in for emissions testing on the new motor, and somebody got wind of it that either worked there, or had a friend there. I'm curious to see what they use it in...It would be nice to see a beefed up wolverine type quad, or a in-betweener of the grizz 450 and grizz 700. With the YFZ 450 and Raptor 700, they pretty much have the sport market taken care of...but you never know.

 

<div class="FTQUOTE"><begin quote>Originally posted by: MIwolvy

I read the same thing somewhere else...yami put in for emissions testing on the new motor, and somebody got wind of it that either worked there, or had a friend there. I'm curious to see what they use it in...It would be nice to see a beefed up wolverine type quad, or a in-betweener of the grizz 450 and grizz 700. With the YFZ 450 and Raptor 700, they pretty much have the sport market taken care of...but you never know.</end quote></div>

they are redesigning the yf450 this year. it will come with fuel injection and who knows what else. that is the bike i am look forward to see.

 

Poss a midsize Grizz?

 

<div class="FTQUOTE"><begin quote>Originally posted by: bigned1904


they are redesigning the yf450 this year. it will come with fuel injection and who knows what else. that is the bike i am look forward to see.</end quote></div>

I'll believe it when I see it. People have been claiming EFI on the YFZ450 for 4 years and we have yet to see it. Personally I don't think it will increase their sales if they did switch, which is why Yamaha is still sticking with their proven carburator. EFI isn't going to get me to buy a new one or convert, the carb works absolutly great for me and for the majority of owners.

 

It would be nice if they put it into a midsize Grizz/Kodiak. Leaving the size of the machine close to same as the present 450 but having more grunt. It would have more power without going to the big 660/700 Grizz frame size.

That plus if they call it a 550 it will have more displacement (558cc) rather than less (421cc) of the nameplate like my 450 does.

The EFI thing is just a sign of the times with emissions and everything else going to EFI.