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Engine Rings Sioux Falls SD

Ring sets in late-model engines are running hotter than ever before. As rings move up higher and higher on the piston to reduce emissions, they are exposed to more heat. A decade ago, the land width between the top ring groove and piston crown was typically 7.5 to 8.0 mm.
City of Sioux Falls Public Works-Fleet Mgmt.
(605) 367-8240, 001-2004
1000 East Chambers Street
Sioux Falls, SD
Gary's Tire Service
(605) 331-1128
1414 E 61st Street North
Sioux Falls, SD
Baldwin Supply CO
(605) 977-4561
908 E Amidon Street
Sioux Falls, SD
Steve's Auto Repair
(605) 498-5000, 001-2004
27168 469th Avenue
Tea, SD
V and W Repair
(605) 336-0877
205 W Russell Street
Sioux Falls, SD
Exhaust Pros of Sioux Falls
(605) 332-2856
3802 N Cliff Avenue
Sioux Falls, SD
Auto DOCS
(605) 331-6003
2740 W 7th St
Sioux Falls, SD
Graham Tire CO
(605) 339-3334
2101 W 41st Street
Sioux Falls, SD
Legend Suzuki Victory
(605) 977-2110
2101 W Burnside Street
Sioux Falls, SD
Big Rig Sign Co
(605) 335-8501
4622 N Cliff Ave
Sioux Falls, SD
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Engine Rings



By Larry Carley
4/1/2007

Adapted from Larry Carley's article in Underhood Service



The Extreme Life of Piston Rings and the Technology Used
in their Development

Piston rings have one of the toughest jobs inside an engine. Theyre slammed up and down between the ring lands thousands of times a minute, theyre subjected to searing temperatures and extreme pressures, and theyre constantly scraping back and forth against the cylinder walls. In spite of all of this, the rings are expected to seal combustion and vacuum, prevent blowby, control oil consumption, keep the cylinder walls lubricated, cool the pistons, and last but certainly not least, last almost forever (150,000 miles plus in a passenger car/light truck engine or up to 1 million miles in a heavy-duty over-the-road diesel)!

Its a demanding list, yet most rings are up to the task and hold up pretty well assuming the right rings are used for the application, the cylinders are finished properly and the rings are installed on the pistons correctly. Obviously, the ring sealing requirements of a high-revving racing engine or a hard-working diesel engine are much more demanding than those of a mild stock engine. So with that in mind, lets look at some of the latest thinking as it applies to piston ring designs, materials and coatings.

Stock Rings
With so many late-model engines running thinner, low-tension moly-faced ductile iron and steel rings, one might think cast iron rings are fading into histor...

Click here to read the rest of the article from Tomorrow's Technician

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