Total Seal Gapless Piston Ring Sets! Increase combustion efficiency by reducing blow by.
This listing is for a full set to cover all 8 cylinders, featuring the gapless 2nd ring modification.
Conventional style rings when newly installed will show leak down figures of 7% or higher these figures can quickly exceed 20% or higher after a surprisingly short period of time. Gapless® rings on the other hand when newly installed typically show leak down figures of 2% and lower and will should remain the same throughout the life of the engine.
Order the correct set based on your final bore size once all machine work has been completed because these are NOT returnable.
| Description | Plasma-moly, 4.055 in. Bore, 3.0mm, 2.0mm, 4.0mm Thickness, V8, Set | Plasma-moly, 4.085 in. Bore, 3.0mm, 2.0mm, 4.0mm Thickness, V8, Set | Plasma-moly, 4.075 in. Bore, 3.0mm, 2.0mm, 4.0mm Thickness, V8, Set |
| Bore (in.) | 4.055 in. | 4.085 in. | 4.075 in. |
| Bore (mm) | 102.997mm | 103.759mm | 103.505mm |
| File Fit | No | No | No |
| Gapless | YES | YES | YES |
| Gas Ported | No | No | No |
| Oil Ring Included | Yes | Yes | Yes |
| Oil Ring Material | CP-20 | CP-20 | CP-20 |
| Oil Ring Tension | Standard | Standard | Standard |
| Oil Ring Thickness | 4.0mm | 4.0mm | 4.0mm |
| Quantity | Sold as a set. | Sold as a set. | Sold as a set. |
| Second Ring Facing Material | Iron | Iron | Iron |
| Second Ring Included | Yes | Yes | Yes |
| Second Ring Material | Cast iron | Cast iron | Cast iron |
| Second Ring Thickness | 2.0mm | 2.0mm | 2.0mm |
| Top Ring Facing Material | Plasma-moly | Plasma-moly | Plasma-moly |
| Top Ring Included | Yes | Yes | Yes |
| Top Ring Material | Ductile iron | Ductile iron | Ductile iron |
| Top Ring Thickness | 3.0mm | 3.0mm | 3.0mm |