Top 10 'DOs' of Piston Ring Installation - Engine Builder Magazine

Top 10 ‘DOs’ of Piston Ring Installation

1. Insert rings squarely into the bore and measure end gap with feeler gauge;

2. Adjust gap if needed by filing both sides of gap equally;

3. Use ring expander tool to install rings on piston, so as not deform ring – do not spiral on rings;

4. Install directional rings with the dot up (otherwise oil pumping may occur);

5. Install 2.0mm 3-piece oil ring with expander points up to  avoid catching in drain-back hole/slot in oil groove bottom;

6. Stagger location of end gaps on each ring 180 degrees apart;

7. Clean bores with hot soapy water & scrub brush, wipe with clean white rag to check for any residue;

8. Lightly oil cylinder walls and rings with regular non-synthetic motor oil;

9. Properly tighten ring compressor so rings don’t catch on edge of cylinder or pop out in bore (don’t force piston if it is hung up);

10. Typical engine break-in: use conventional motor oil – change oil after first 3,000 miles. Use only synthetic motor oil if originally specified by manufacturer.

Source: Hastings Piston Rings

You May Also Like

Factors of Crankshaft Selection

From the high-performance powerplants propelling Top Fuel dragsters to the subdued engines found in family sedans and grocery getters, each crank must be tailored to, and appropriate for, its specific application.

We know a crankshaft plays a critical role in an engine’s performance, converting reciprocating motion into rotary motion while serving as the backbone of the entire system. It must be strong enough to withstand the continuous pounding of rods and pistons, yet possess enough elasticity to absorb vibrations and flex, albeit slightly, when needed.

Shop Solutions March 2024

I always keep a pair of needle nose pliers and a small, straight screwdriver in my blast cabinet to hold small parts when blasting.

Degreeing the Camshaft and Checking Valve-to-Piston Clearance

Jeff McCord of LinCo Diesel Performance walks you through degreeing a camshaft and checking valve-to-piston clearance.

Designing a Better LS Engine

After a customer wanted a Steve Morris Engines’ SMX in an LS version, Steve saw the upside and potential in the market, and a challenge to build a better LS.

Other Posts

The Importance of a Good Valve Job

The valve job ensures the mating surfaces of the valves and the seats properly control the air/fuel mixture.

Getting Better Cylinder Head Airflow

When it comes to improving horsepower and rpm, airflow has a lot to do with it, and it seems the job is one that’s never finished.

Horsepower and Head Gasket Technology

Head gaskets have one of the toughest job in an engine, and now we’re pushing them harder than ever, making it easier to expose the slightest weakness.

Inside the Development of Frankenstein’s F-Series LS Cylinder Heads

Right away, engine builders knew it was special.