High Quality Piston Ring Be Sent To Client.

Fit Toyota 2L,3L,5L,14B,13B,1HZ,5A,4AG,3S,3ZZ,21R,1KZ,1KD etc.

Generally the piston ring have 4 functions:

–Sealing

Preventing combustion chamber gas jumped into the crankcase,improving the thermal efficiency.

Leakage will not only reduce the power of the engine, but also make oil deterioration.Sealing is the first function of top ring.

–Controling oil

scraped off the excess oil of the cylinder wall,leaving a thin layer of film to ensure the normal lubrication of the cylinder& piston &ring.

–Transfering heat

Transfer the piston heat to the cylinder wall,70-80% of the piston top heat transmitted and scatered by the piston ring.

–Supporting 
The piston ring keeps the piston in the cylinder and ensure piston smooth movement ,preventing piston knocking the cylinder wall.

How to install piston rings?

Firstly,prepare the below installation tool :

 

 

 

 

 

 

 

 

Correct installation order should:

Expander—oil ring—2nd ring—top ring.

 

 

 

 

 

 

 

 

Checking the marks on the ring side, the marked side should face up.

 

 

 

 

 

 

 

 

 

 

When all rings are in the piston groove,move left and right to check the rings whether to get stuck in the groove.

Place piston ring gap toward 120” to each other.

                     

(A)  Top Ring Gap

(B)  Second Ring Gap

(C)  Oil Ring Gap

(D)  Piston Pin Hole

(a)  120°

 

 

 

Lastly, apply lubricating oil on the piston and ring groove.

The engine’s performance influence vehicle good or bad directly. Piston ring is one of the engine key components,if sealing not good,will cause lack of compression and power heat down,serious cases could cause engine scuffing failure,so the piston ring  gap is very important. 

 

 

 

 

 

 

 

 

 

 

How to measure the piston ring closed gap(1)?

Place the piston rings in the ring gauge （the ring gauge’s diameter same as the cylinder),

Measure the narrowest distance of the opening.

The expansion of the piston ring closed gap can effectively prevent being scuffing failure when strong heat in the internal combustion engine.

 

 

 

 

 

 

 

 

 

 

 

 

How to measure the piston ring side gap?

Measure the clearance between the ring and the groove with guage.

 

 

 

 

 

 

 

 

 

 

If the side gap too small,the piston ring will stuck in the groove due to the expansion or carbon deposition.

If the side gap too large,the sealing will decreased,and piston ring move up and down in the groove.

(2)Piston Ring Back Gap:

If side gap small morel,it easy to broken when working and cause to scuff.

If side gap large more,the back pressure will be a problem,and will cause leakage or oil burn.

Therefore,the piston ring gap should reasonable and meet the needs of engine performance when design and processing.

 

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