Nasty Pictures: Blown Cylinder - Star Motorcycle Forums: Star Raider, V-Max, V-Star, Road-Star Forum
 
LinkBack Thread Tools Display Modes
post #1 of 2 (permalink) Old 10-19-2015, 04:36 PM Thread Starter
Senior Member
 
caseyjones's Avatar
 
Join Date: Apr 2015
Location: Mechanicsburg, PA
Posts: 609
Garage
Nasty Pictures: Blown Cylinder

I knew when I got an absolute zero compression on the left cylinder that something was badly wrong. I figured the intake or exhaust valve had sheared a shaft and was just hanging there... maybe even slapping on the cylinder and beating it up. Boy was I wrong.

As some of you may know, my business is restoring vintage Japanese bikes or parting them out if too far gone. (Sorry, VStars are just what I ride - don't yet count as 'vintage' so I'm not-much-help vis-a-vis the forum).

But THIS is about the worst I've seen... I've seen cracked cylinders and bad rings. I've seen heads with a broken valve floating around inside. I've even seen cylinders with a full-on hole in them - like the size of a pencil-eraser. But in all my years working on often-abused bikes, I have never seen a cylinder with a massive hole blown right through the top like this! I have no idea what happened to this bike... but DAYUM!



FWIW, this is a 1982 Kawasaki KZ440 in otherwise-gorgeous condition.

2007 V-Star 1300

-Cobra Slip-ons
caseyjones is offline  
Sponsored Links
Advertisement
 
post #2 of 2 (permalink) Old 10-20-2015, 03:37 PM
Member
 
gunnerbob's Avatar
 
Join Date: Apr 2015
Location: The Low Country
Posts: 55
I didn't spot the problem, I just see another way for exhaust to escape. :/

1986 Honda VT500C - On loan to a family member
2005 Suzuki SV650 - ADV project bike
2013 V Star 950T - Newest addition to the stable
gunnerbob is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Star Motorcycle Forums: Star Raider, V-Max, V-Star, Road-Star Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome