Who Makes Perfect Circle piston rings?
The Perfect Circle Co., U.S. manufacturer of piston rings, is now part of Mahle GmbH. Mahle GmbH is an automotive parts manufacturer based in Stuttgart, Germany. It is one of the 30 largest automotive suppliers worldwide.
How many degrees apart should piston rings be?
Before you slip the assembly into the bore, it’s a good idea to separate the respective ring gaps (top, second and oil). Common consensus among engine builders to keep the gaps approximately 120 degrees apart (a third of the way around the piston).
Who owns Perfect Circle?
Dana Corporation
On July 1, 1963, Perfect Circle Corporation, with more than 2,900 employees, became a wholly owned subsidiary of Dana Corporation of Toledo, Ohio.
What type of piston rings should I use?
Generally speaking, steel piston rings are more durable than ductile iron rings, and ductile iron rings are more durable than cast iron rings. Ductile iron moly faced rings are still the best choice for many traditional types of street and strip performance engines.
Which is the largest manufacturer of piston rings?
MAHLE® piston rings lead the way in ring technology and innovation for the Aftermarket – after all, MAHLE is the largest manufacturer of piston rings in the world. MAHLE piston rings are at the forefront of light vehicle piston ring technology. Extensive OE connections mean that MAHLE piston rings have the technological edge.
Do you need Mahle piston rings for a car?
Whether you’re repairing a modern computer controlled engine, or rebuilding an older engine, be sure to specify MAHLE piston rings, formerly Perfect Circle – trusted by professional automotive technicians for over 100 years.
Why are steel piston rings used in cars?
Steel compression ring technology has been used in heavy-duty applications for over 30 years. That know-how has become essential to the design and engineering of today’s automotive engines. Steel piston rings offer higher tensile strength, higher yield strength, greater fatigue life, and greater hardness while still offering a lower ring mass.