Jump to content

Recommended Posts

Posted
:o  That sucks man!  What was your jetting like?

379205[/snapback]

 

i don't know i bought the bike 2 months ago. how long does it take for something like this to happen?

Posted
i don't know i bought the bike 2 months ago. how long does it take for something like this to happen?

379212[/snapback]

it can happen in as little as 1/2 hr or less. I took my 'shee out last winter & was too lazy to rejet it for the cold weather. Temp was at least 45 degrees cooler that what it was jetted for. Melted left piston in about 20 minutes. WAY LEAN!! :bolt:

Posted (edited)

If your jetting is off, you can destroy a brand new top end in a good day of riding.

Your jetting looked fine on the left side from the looks of that piston which makes me totally agree w/nyuk on the air leak theory.

Edited by sheefreak
Posted

exact same thing about 2 weeks ago, hole was in the same spot too and the left cylinder looks exactly like mine

my cause was i had to much compression without knowing, i had 17cc domes when i thought i had 21cc domes so was using pump fuel in a dome made for race fuel

 

hope you didnt drive it home like i did

i gotta get a new crank too piston bits f'ed up mine

Posted
oh well i gues the only way to look at it is. when it gets fixed it will be a lot faster. and i am going to learn a lot.

379290[/snapback]

True! Might as well port it, stroke it, bore...... :D

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
×
×
  • Create New...