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Total Seal Ring Endgaps - Gapless & Conventional


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Gapless® Top Rings

Gapless®2nd's&Conventional

Application Min. Top Ring Second Ring Oil Ring Rail
Street, Strip, Circle Bore x .0065"Bore x .0056" Min. .015"
Nitrous up to 150hp Bore x .007" Bore x .006" Min. .015"
Nitrous over 150hp Bore x .009" Bore x .008" Min. .015"
Blown Gas* Bore x .007" Bore x .006" Min. .015"
Blown Alcohol* Bore x .008" Bore x .007" Min. .015
Blown Nitro* Bore x .0085" Bore x .007" Min. .015
*Indicates any type of forced induction system.
Application Top Ring Second Ring Oil Ring Rail
Street, Strip, Circle Bore x .0045" Bore x .0035" Min. .015"
Nitrous up to 150hp Bore x .006" Bore x .0045" Min. .015"
Nitrous over 150hp Bore x .008" Bore x .0055" Min. .015"
Blown Gas* Bore x .0055"Bore x .0035" Min. .015"
Blown Alcohol* Bore x .0045" Bore x .0035" Min. .015
Blown Nitro* Bore x .0055" Bore x .0035" Min. .015
*Indicates any type of forced induction system.
HELPFUL TIPS FOR RING FITTING AND SEATING
All pistons (including new ones) should be checked for proper ring to groove clearances.

Ring to piston groove back clearance should be a MINIMUM of .005" deeper than radial wall dimension of piston ring. If piston ring sticks out of groove by any amount, you have the wrong rings (see fig.1).

Ring to groove side clearance should be a minimum of .0015 to a maximum of .003" (see fig.1).

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This product was added to our catalog on Friday 07 March, 2008.