Today, dollar for dollar, is the 318 faster than the 340 ???
From Grant rings in California.
Materials And Coatings
Grant uses the latest materials and coatings available to keep pace with the growing trends in engine technology. We offer a variety of materials and coatings for piston rings ranging in diameter from 40mm to 340mm, in a wide variety of profiles and joint types.
We also offer different versions of piston rings sets to give you a choice of performance and price level. Whatever Grant ring set you choose, you can be assured that quality is built in.
The Ideal Ring Set For The Job
Plain Cast Iron Piston Ring Sets:
These ring sets contain compression rings which are manufactured to precision specifications from high grade grey iron castings The top compression rings are black phosphate coated and normally beveled on the inside top, which gives a torsional twist characteristic or relieved on the lower ridge for oil scraping characteristics. The second compression ring is normally a scraper ring commonly used in the second groove. Oil rings are generally 3-piece circumferential style, which provide quick seating, positive oil control and long life.
Plain ring sets are identified with no prefix or a “P” prefix, example: 2271.020 or P2271.020
Chrome Cast Iron Piston Ring Sets:
These ring sets have a top compression ring that is chrome plated for resistance to wear and scuffing. High strength iron is used where applicable. Intermediate rings are of Torsional twist design. Oil rings are of either circumferential design or Grant’s patented channel oil ring, both of which provide quick seating, positive oil control and long life.
Chrome ring sets are identified with a “C” prefix, example: C2271.020
Chrome Steel Piston Ring Sets:
These ring sets have a top compression ring that is chrome plated and lapped for resistance to wear and scuffing, and faster seating. Steel material is used for high strength and excellent fatigue resistance. Intermediate rings are of Torsional twist design. Oil rings are of either circumferential design or Grant’s patented channel oil ring, both of which provide quick seating, positive oil control and long life.
Chrome ring sets are identified with an “S” prefix, example: S2271.020
Moly Piston Ring Sets:
These ring sets have a top compression ring which contains a section of 100% pure molybdenum with a melting point of 4730° Fahrenheit (2610° C). This high melting point reduces scuffing; scoring and heat transfer from the piston to the cylinder block. Molybdenum increases lubrication, improves compression and adds longer life as well as working with today’s shorter skirted pistons. The oil ring included with these sets is a three-piece circumferential design, which allows uniform unit wall pressure and efficient oil control.
Moly ring sets are identified with an “M” prefix, example: M2271.020
From Grant rings in California.
Materials And Coatings
We also offer different versions of piston rings sets to give you a choice of performance and price level. Whatever Grant ring set you choose, you can be assured that quality is built in.
The Ideal Ring Set For The Job
- High-Strength Ductile Iron Material For Extended Life
- Steel Material For Maximum Durability Under Extreme Load Conditions
- Phosphate Coated (Plain) Gray Cast Iron Rings For Economy Re-Ring Jobs.
- Chrome Coated Rings For Maximum Resistance To Wear And Scuffing
- Plasma-Moly Coated Rings For Improved Lubrication And Seating
Plain Cast Iron Piston Ring Sets:
Plain ring sets are identified with no prefix or a “P” prefix, example: 2271.020 or P2271.020
Chrome Cast Iron Piston Ring Sets:
Chrome ring sets are identified with a “C” prefix, example: C2271.020
Chrome Steel Piston Ring Sets:
Chrome ring sets are identified with an “S” prefix, example: S2271.020
Moly Piston Ring Sets:
Moly ring sets are identified with an “M” prefix, example: M2271.020
