Catalog: JE Pro Seal Catalog
Company/Brand: JE Pistons
engine cylinder piston ring in JE Pro Seal Catalog by JE Pistons
5 RING DIMENSIONS D-wall: A specification ... by the Society of Automotive Engineers (S.A.E.) that dictates the radial ... width of a standard automotive piston ring by the use of the following formula; ... Gap: The end gap clearance when the ring is not compressed 2. End Gap: The end ... gap clearance when the ring is compressed to the bore diameter 3. ... Diameter: The inside diameter of the ring at bore diameter 4. Outside Diameter: ... The outside diameter of the ring at bore diameter 5. Ring Axial Sides: ... The top and bottom surfaces of the ring 6. Torsional Twist: The installed ... position of the ring due to a chamfered area on either ring ... side that helps the ring cross-seal 7. Ring Face: The section of the ring that ... contacts the cylinder wall 8. Back Clearance: Distance ...

Torsional HNS and Tool Steel 6 TOP RINGS The top compression ring is ... for creating a seal with the cylinder wall to maintain combustion chamber ... pressure. The top ring also transfers up to 45% of the heat ... by the combustion process to the cylinder wall en route to the engine cooling ... system. JE Pro Seal top compression rings are available in a variety of shapes ( ... the most efficient and economical ring to suit your application. Most JE Pro ... Seal top compression rings have a barrel face with a positive ... . During most of the intake stroke, the piston ring twists upward because of the ... lower half to maintain contact with the cylinder wall (fig. 4). On the compression and ... exhaust strokes, the ring may sit fllat on the groove surface ( ... chamber pressures (most notable when piston is near top dead center. A third ...

7 RING FUNCTIONS VERTICAL GAS PORTS FIGURE 7 ... FIGURE 8 LATERAL GAS PORTS RING ROTATION Ring rotation is critical for ... to lower temperature sections of the piston and the cylinder wall. If the rings ... were stationary in the ring groove, the piston and cylinder wall would experience ... condition can cause scuffing of the cylinder wall, premature wear, piston to ring ... microwelding and possibly ring butting. The rate at which the ring ... rotates is determined by the piston rods, friction between the ring sides, ... bore finish, and cross hatch angle. TOP RINGS CONTINUED GAS PORTING Combustion ... pressure can be directed behind the top ring with the addition of vertical or ... lateral gas ports on the piston. Vertical gas ports are small holes ...

8 SECOND RINGS The most conventional second ring shape ... twist. The tapered face of the ring acts as a wiper that scrapes excess oil ... from the cylinder wall (fig. 1). It is important to ... carbon build up and raises both piston and oil temperatures. The chamfer ... machined in the back, under-side of the ring produces a twist in the ring, which ... its cross-sealing properties. Second rings are also available from JE Pro Seal in ... the Napier or hook style ring face. This design is considered ... channels oil flow back down the cylinder wall and away from the underside of the ... ring (fig. 2). OIL RINGS The function of an oil ring is to ... remove oil from the cylinder wall. In most cases, an oil ring is ... with an expander in between them. As an engines rotating assembly continuously slings ...

5mm) .034" .121" .170" .121" .170" D014 RING FACE COATINGS JE offers a variety of ... ring face coatings specifically designed for ... ), TiN (Titanium Nitride), and base ring material gas nitriding. These face ... and scuff resistant face against the cylinder wall while also providing a very low ... ) processes and are the premier ring coatings available today. Contact your ... . All non-stainless steel JE Pro Seal rings have a corrosive resistant coating that ... to help prevent scuffing during early engine operation or break in . Plasma Moly ... filled ductile iron rings are coated with a manganese phosphate ... while steel rings are coated with an iron oxide compound ... rust from accumulating while the rings are in the package and provide a ... , to insure proper lubrication at engine start up. DYKES RING STANDARD RING ...

TO USE THIS CATALOG This JE Pro Seal Ring catalog has been divided into three ... are separated in the following manner: Rings Listed by Series (pages 19-31) a legend ... you in determining the appropriate ring for your application. This section also ... features a complete breakdown of the ring set numbers into individual top, ... second and oil ring part numbers (except sport compact and ... motorcycle rings which are sold in sets only). Rings ... 33-37) In this section all JE Pro Seal ring sets are sorted by axial height then by ... application type. Domestic automotive rings are listed first, Import automotive ... second followed lastly by motorcycle ring sets. This listing is for ring sets ... only. Rings Listed by Bore Size (pages 41-45) This ... section contains all JE Pro Seal ring sets including single, four, six and ...