NOTE: These are general gapping recommendations and are not to be considered absolute.
State of engine tune, operating environment and personal experience must also be considered.
If for any reason you are in question of these general guidelines, please call (800) 874-2753 or e-mail [email protected] prior to final assembly.
Gapless Top Rings
|
APPLICATION
|
FUEL
|
TOP RING
|
2ND RING
|
OIL RAIL
|
|
Street, strip, circle
|
Gas, Alky, E85
|
Bore X .0045"
|
Bore X .0045"
|
Min .015"
|
|
Nitrous up to 150HP
|
Gas, Alky, E85
|
Bore X .0055"
|
Bore x .0055"
|
Min .015"
|
|
Nitrous 150HP-350HP
|
Gas, Alky, E85
|
Bore X .0065"
|
Bore x .0065"
|
Min .015"
|
|
Nitrous 350HP+
|
Gas, Alky, E85
|
Bore X .008"
|
Bore x .008"
|
Min .015"
|
|
Mild boost up to 15lb
|
Gas, Alky, E85
|
Bore x .0055"
|
Bore x .0055"
|
Min .015"
|
|
Medium boost 15-30lb
|
Gas, Alky, E85
|
Bore x .007"
|
Bore x .007"
|
Min .015"
|
|
High Boost 30lb+
|
Gas, Alky, E85
|
Bore x .008"
|
Bore x .008"
|
Min .015"
|
|
Mild boost up to 15lb
|
Nitro
|
Bore x .006"
|
Bore x .006"
|
Min .015"
|
|
Medium boost 15-30lb
|
Nitro
|
Bore x .008"
|
Bore x .008"
|
Min .015"
|
|
High Boost 30lb+
|
Nitro
|
Bore x .009"
|
Bore x .009"
|
Min .015"
|
Gapless Second Rings
|
APPLICATION
|
FUEL
|
TOP RING
|
2ND RING
|
OIL RAIL
|
|
Street, strip, circle
|
Gas, Alky, E85
|
Bore X .0045"
|
Bore X .0045"
|
Min .015"
|
|
Nitrous up to 150HP
|
Gas, Alky, E85
|
Bore X .0055"
|
Bore x .0055"
|
Min .015"
|
|
Nitrous 150HP-350HP
|
Gas, Alky, E85
|
Bore X .0065"
|
Bore x .0065"
|
Min .015"
|
|
Nitrous 350HP+
|
Gas, Alky, E85
|
Bore X .008"
|
Bore x .008"
|
Min .015"
|
|
Mild boost up to 15lb
|
Gas, Alky, E85
|
Bore x .0055"
|
Bore x .0055"
|
Min .015"
|
|
Medium boost 15-30lb
|
Gas, Alky, E85
|
Bore x .007"
|
Bore x .007"
|
Min .015"
|
|
High Boost 30lb+
|
Gas, Alky, E85
|
Bore x .008"
|
Bore x .008"
|
Min .015"
|
|
Mild boost up to 15lb
|
Nitro
|
Bore x .006"
|
Bore x .006"
|
Min .015"
|
|
Medium boost 15-30lb
|
Nitro
|
Bore x .008"
|
Bore x .008"
|
Min .015"
|
|
High Boost 30lb+
|
Nitro
|
Bore x .009"
|
Bore x .009"
|
Min .015"
|
|
|
|
