Scoring on piston??

K

kdx220freak

Registered

Aug 23, 2005

321

0

• Sep 25, 2005

• #1

hi, i took my cylinder off of my kdx220. The piston had a very alot of carbon, so i am going to buy a wesico piston kit. (the jetting was off so carbon built up). Anyway, the piston has alot of scoring and im not sure what it is from. Strangly the cylinder is still in excellent shape. If you have any ideas please let me know. thanks

 

G

Green Hornet

Member

Apr 2, 2005

837

0

• Sep 26, 2005

• #2

Scoring or usual wear? The cylinder is where scoring is a very bad thing. Sounds like wear n tear to me

 

K

kdx220freak

Registered

Aug 23, 2005

321

0

• Sep 26, 2005

• Thread starter
• #3

so this is normal?? the cylinder is in great shape but the piston had got lines through it.

 

T

the trail rider

Member

Jul 25, 2005

171

0

• Sep 26, 2005

• #4

if it is stock get a wiseco right away because of the grenading problem. if it has lines through it, it may be an internal crack waiting to grenade the piston..

 

D

dirt bike dave

Sponsoring Member

May 3, 2000

5,348

3

• Sep 26, 2005

• #5

If its got alot of hours, some scoring is normal.

Scoring that is on the intake side can result from not warming the bike up enough before you put it under a heavy load.

If its predominantly on the exhaust side, more likely a result of inadequate lubrication or the motor running too hot.