Can this Cylinder be salvaged!!!

Advertise with us
Shop deals on ebay
Wesspur
Arborist Forum

Help Support Arborist Forum:

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
KTM640

KTM640

ArboristSite Operative
Joined
Nov 20, 2005
Messages
128
Reaction score
22
Location
Howell, MI
I've got CAD bad. Picked up another project even before I finished my last one.
The pics are the piston and cylinder from an 064 that I picked up. The walls of the cylinder look smooth, but the top of the cylinder is all pitted with what looks like carbon. The top of the piston looks pitted, with a ridge around the edge of the piston. View attachment 69192

View attachment 69193

I haven't seen anything like this before and wanted to get input from yall on what you thought might have caused this and if any of it is salvageable:confused: ..

Thanks

Jon
 
Check big end rod bearing carefully............I had a 200T that did that and the crank was junk too......Small end bearing was completely apart..
 
Last edited:
It almost looks like a rather large foreign object lived in there for a while. But if that were the case, it would have caught in a port long before now. Plus your walls don't appear to be damaged. If it were from debris from a wasted bottom end bearing, it would have to have come up through a transfer. Again, he doesn't have any cylinder wall damage.
 
Last edited:
The pics are hard to see anything, but that isnt just carbon flaking? Maybe not, I might be way off. Better pics would help.
 
attachment.php



attachment.php







This 200T was from bad gas......
 
Last edited:
Take a look at this crop. Does this appear to be a build up, rather than a beat up aluminum surface? Or is the surface of the piston eroded away up to the edge where it couldn't hit it? What in the world could cause a buildup like this? Take the piston crown to a wire wheel and see if it comes off. Take care not to damage the piston edges.

280613160_8S7he-M.jpg
 
Last edited:
blsnelling said:
It almost looks like a rather large foreign object lived in there for a while. But if that were the case, it would have caught in a port long before now. Plus your walls don't appear to be damaged. If it were from debris from a wasted bottom end bearing, it would have to have come up through a transfer. Again, he doesn't have any cylinder wall damage.
Click to expand...


On mine the big end bearing looked good but failed the pull test....:) :)
 
KTM640 said:
When I got this it was in pieces and there was not a wrist pin bearing. The lower rod bearing looks to have all the rollers. I did the pull test and there is no play up and down. Side to side, there is a little rocking.
View attachment 69200

View attachment 69201

View attachment 69202

View attachment 69203

View attachment 69204

Here are more pics on the side of the piston, transfer ports and inside of the bearing on the clutch side of the case.

Jon
Click to expand...


Piston damage........Looks like pin bearing .......
 

Similar threads

S
How bad is this scoring?
Replies
11
Views
890
Lightning Performance
Lightning Performance
atimen
Another attempt at salvaging the oem 044 cylinder
2
Replies
24
Views
2K
pioneerguy600
pioneerguy600
rcwhipple
Husqvarna 61 rebuild
Replies
8
Views
673
NSEric
N
D
372xpw
Replies
1
Views
462
Coralillo Lo Pro
Coralillo Lo Pro
E
Aftermarket 272xp piston & cylinder kit issue
Replies
19
Views
1K
eb20
E

Latest posts

Back
Top