HEADS UP!!!

Site upgrade in progress... Core site functions are working, but some non-critical features/functions will be temporarily unavailable while we work to restore them over the next couple of weeks.

Please post any bugs you encounter, but before you do, check to see if it's already listed.

Thanks for your patience while we work to improve the community.

Sign in to follow this  
Followers 0
707

YZ426f-How to turn it into a Beast. Post here.

14 posts in this topic

I was wondering how to turn my stock kitten into a beast. List of Mods and what not. Trying to get "The Beast feeling". I think mine is not tuned/jetted correctly Either.

Share this post


Link to post
Share on other sites

It would be cheaper to buy a 650 :cry:

Raise the compression +13/1 and go to a 100mm piston

Port the Head

Get the Bigest cams and dial them in !!

Open the exhaust.

Hang on

Share this post


Link to post
Share on other sites

I was not tring to be smarta$$. If you think your 426 is a kitten you must be an expert rider and should know how to improve it, or it is in dire need of rebuilding. :cry: What is it's cranking pressure? over 175psi?

Share this post


Link to post
Share on other sites

707 - local area code? If so, I'm a fellow local 426 rider (Napa). What you do to the bike depends on what you ride it on (track, trail etc.). Give some more info and we can point you in a direction...

Dan

Share this post


Link to post
Share on other sites

Sure is. I do track and trail. It is like exactly 50/50. I want to set the bike up for MX though. So incase I want to screw around on some jumps and stuff I can do that. I just want more power.

Share this post


Link to post
Share on other sites

I agree with brucifer, I have yet to be beat on the hole shot out of the gate and I don't mean just barely I'm talking 4-6 bike lengths to the first turn in a 300-400 ft start. You may have some thing holding back your bike, post a list of your jetting, altitude, pipe, & gearing. :cry:

Share this post


Link to post
Share on other sites

Sure is. I do track and trail. It is like exactly 50/50. I want to set the bike up for MX though. So incase I want to screw around on some jumps and stuff I can do that. I just want more power.

:cry:

I think it was one of the wise ol smart :moon:'s who said

Twist thr grip to the rear fender

:cry: More Power :cry:

Get it ported, contact John Hlebo in the Bay Area

Share this post


Link to post
Share on other sites

Honestly, I am not about to me a smart ass here but this statement concerns me

"I think mine is not tuned/jetted correctly Either"

My concern that is if this is as much as you know about your current jetting, I would be leary of trying to mod the bike. You may infact find alot more speed by simply twisting harder. I recently began to think I was not opening the throttle like I thought I was. So, I I came out of a turn to a long straight and opened it up to where as I always do. Then I tried to twist a bit more. Guess what. The damn thing took off again. Due to poor form and to much slack in the cable, I was not opening it up all the way. I took out some the slack and the took Semics advise and started over gripping a bit. Keeps my elbows up and ensures that I can twist all the way without having to be double jointed to get there. It has made a BIG difference in my bike horsepower.

Share this post


Link to post
Share on other sites

Agree, Berudd. One has to be a real good rider wanting to turn the beast into more beast. The concern is not the power, but weight and handling.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now
Sign in to follow this  
Followers 0