All parts of Pit Bikes
Ex : Lifan, LXR, Pignon, ...
My Cart
No items

?
englishfrench
My Account
News
Contact Us
Contacter Nous
  Shop >> Engine part >> Cylinder/piston
Click on a star to assess this article!
4.6/5 ( 138 votes )
Ref : 861

When to replace a piston ?

 
Descriptive

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

Usually the rings worn first. You can control by placed only the ring into the cylinder so as to check the clearance between the ends : 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 : 2484
In stock - shipping within 24 hours
++
7,50 €

Removed liquid, brake oil, grease and other residues of parts metal.

Avoid on the plastic and the surface painted

Net volume 500 ML

Ref : 3081
In stock - shipping within 24 hours
++
6,40 €
Ref : 5023
In stock - shipping within 24 hours
++
1,00 €

tightening torque: 1.2m.kg

Ref : 911
In stock - shipping within 24 hours
++
6,00 € 15,00 €
Ref : 1469
In stock - shipping within 24 hours
++
7,00 €
Ref : 3583
In stock - shipping within 24 hours
++
3,90 €
 
Ref : 4982
In stock - shipping within 24 hours
++
2,50 €

Diameter 14 mm thread 1.5 fit for all pit bike engine
 

The magnetic tip allows to keep the metal filings contained in oil.

Ref : 1085
In stock - shipping within 24 hours
++
59,00 €
 
Ref : 2533
In stock - shipping within 24 hours
++
59,00 €