Jump to content
Sign in to follow this  

Yz250 Vibration problems

Recommended Posts

What are some of the best aftermarket parts that will get rid of vibration. Or are there any tricks that will make the bike stop vibrating so much. I don't mind it that much, I would just be able too ride a lot longer if it didn't vibrate so much.

Share this post


Link to post
Share on other sites

What are some of the best aftermarket parts that will get rid of vibration. Or are there any tricks that will make the bike stop vibrating so much. I don't mind it that much, I would just be able too ride a lot longer if it didn't vibrate so much.

 

From what I just read I would try a set of those Twisted engineering composite handle bars.

 

http://www.thumpertalk.com/reviews/product/42897-twisted-engineering-composi-flex-ii-handlebars/

Share this post


Link to post
Share on other sites

If its vibrating so much that you can't ride it, you most likely have a mechanical problem which would be best fixed with service and repair rather than aftermarket parts.

A previous thread may help you identify the problem and give you info on aftermarket stuff (assuming there's nothing worng mechanically): http://www.thumpertalk.com/topic/993350-insane-vibration-03-yz-250/?hl=vibration#entry10413188

Share this post


Link to post
Share on other sites

Silicone caulk injected into the handlebars helps quell some of the vibes. Some of my buddies go so far as to cut the heads off of bolts and insert them into the handlebar, and caulk them into place for the additional weight to quell even more vibes.

Share this post


Link to post
Share on other sites

Haha well it is blown up now. But I don't think it was mechanical, just normal 2 stroke vibration. I wonder if those bars make a big difference

Share this post


Link to post
Share on other sites

Supposedly they make a huge difference from what I hear, but I've never tried them myself. Out of my price range.

Share this post


Link to post
Share on other sites

Yes, carbon will flex & flex & flex some more, but will not bend permanently. Instead, when they reach the "threshold" of the carbon matrix, they will break. Most people can feel them getting more "spongy" when they are nearing that "threshold".

Share this post


Link to post
Share on other sites

Sweet I might have too try these along with a set of pro tapered tripple clamps wen I get some extra moolah!

Share this post


Link to post
Share on other sites

start off with small, inexpensive changes like softer grips

 

I have a yz250 and struggled with vibration when i first got it

 

changed the grips over to pillowtops and it actually made a difference, so much so that i dont really need to do anything else

Share this post


Link to post
Share on other sites

Yeah grips are a lot cheaper! I already have pro tapered pillowtops though... I put expandable foam on the inside of my bars also, which honestly helped a little bit

Share this post


Link to post
Share on other sites

I would bet that the extreme vibration you were feeling b4 it "blew up" was due to an advanced timing condition causing detonation which makes these yz's vibrate like a bitch.  Check your ignition timing and make sure it is set to stock.  The only way you can get away with an advanced timing on these bikes is to run race fuel.  If you are running 91, then you must set the ignition timing to stock which is usually .007 degrees b4 TDC.  This detonation problem can shorten a topends' life tremendously.  what exactly happened to your bike when it "blew up"?  Have u inspected the damage yet? 

Edited by jamesmusic19

Share this post


Link to post
Share on other sites

Yes I have taken the top end off and the motor is out of the frame. The piston seized inside the cylinder. And it made the bearings in the crank go bad too. I already bought a wiseco crank... :/ but I'm sending my top end too Eric gorr soon. It should be back together in a couple months. And I could hear it ping, but I wasn't familiar with detonation until I started reading about it. I don't know how too set my timing yet either. But I have a manual so that should tell me.

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

Reply with:

Sign in to follow this  

×