All parts of Dirt Bikes
Ex : Lifan, LXR, Pignon, ...
Your basket
No items

?
englishfrench
Your Account
News
Contact Us
Contacter Nous
  Shop >> Engine part >> Cylinder/piston
Click on a star to assess this article!
4.6/5 ( 111 votes )
Ref : 861

When to replace a piston ?

 
Descriptive

We replace a piston when it is used, symptoms of oil consumption and often a blue smoke.
It is caused not by the seals valve but by a defective air filter. The dust enter the engine and do like a grinding paste between cylinder and rings.

Usually these are the parts that wear out first. They were dismantled and placed in the cylinder so as to check the clearance : 0.5mm max.

The cylinder, much harder than the piston, less wear.
The clearance between piston and cylinder is measured in the lowest part of the piston : correct 0.03/0.05mm max 0.10
0.05 is the thickness of a sheet of cigarette paper

The bright ringt (steel) is above
The black one rings (iron) is second

Fabricant : http://www.dirt-bike-store.com.


The articles that users have also viewed
Ref : 338
In stock - shipping within 24 hours
++
4,90 €

Waterproof and not fragile

Ref : 175
In stock - shipping within 24 hours
++
3,00 €

double lip 18.9x30x5

Ref : 4828
In stock - shipping within 24 hours
++
6,50 €
 
Ref : 3589
In stock - shipping within 24 hours
++
15,60 €

-10x19mm-

Used on all models of LXR, on rod for the lower fixing of the shock absorber

Allows ti reduce the free play of rear suspension.

 

Ref : 4738
In stock - shipping within 24 hours
++
32,00 €

BUCCI 2015

Ref : 3804
In stock - shipping within 24 hours
++
139,00 €
 
Ref : 4135
In stock - shipping within 24 hours
++
1,20 €

Lower swingarm guard screw X4 / X5 and LXR with swingarm CNC

Ref : 1876
In stock - shipping within 24 hours
++
4,90 €

YX150/160

ZongShen 150/155

UPower 150 2S and 4S

TOKAWA 150 and 160

Ref : 2399
In stock - shipping within 24 hours
++
9,00 €
Ref : 3543
In stock - shipping within 24 hours
++
69,00 €
Ref : 3763
In stock - shipping within 24 hours
++
7,50 €