Gas Ported Piston Rings by Total Seal
HARNESS CYLINDER PRESSURE TO IMPROVE EFFICIENCY
Gas Ported Rings direct cylinder pressure to the back of the ring through these machined horizontal slots placed around the ring. The pressure pushes against the inside of the ring forcing it outward to improve ring seal.
IMPROVED RING-TO-WALL SEALING
Improved ring-to-wall-sealing is the main goal for Total Seal’s Gas Ported Rings, but another benefit is longer oil life. With improved sealing comes less blow-by which reduces the amount of carbon that reaches the oil, thus increasing the life of the engine oil.
EXAMPLE OF GAS PORTED PISTON
This example of a gas ported piston shows where the port next to the exhaust valve filled with carbon creating a hot spot leading to excessive damage.
One goal of every internal combustion engine is the seal created between the piston ring and the cylinder wall, especially during the compression and combustion cycles. The practice used to be that increased tension of the rings would improve the cylinder sealing so piston rings were thicker and heavier, but with today’s improved metallurgy and machining technology that mindset has changed. In fact, the ring experts at Total Seal are using a reverse psychology approach; instead of trying to overcome the cylinder pressures, why not use it to your advantage.
BETTER GAS PRESSURE DISTRIBUTION
Stainless Steel > Cast Iron
Advance Profiling Symmetry
PVD Face Coating
Total Seal’s Gas Ported Rings feature unique horizontal slots machined into the top of the ring. These slots direct combustion gases to a bevel behind the ring to push the ring out towards the cylinder wall and improve the seal. This technology stems from the use of gas ported pistons which have been available for a number of years, yet porting the pistons has a number of downfalls.
Downfall of Gas Ported Pistons
Another downfall of having ports on top of the pistons is that the ports will eventually become plugged by combustion carbon causing inadequate sealing of the ring to the cylinder wall. Also, when the pistons are ported, the ring will always seal tighter to the cylinder wall in the exact same position which will eventually lead to uneven wear of the bore.
Gas Ported Performance For Less
Total Seal CR Classic race piston rings are built around Total Seal’s ductile iron, plasma-moly coated conventional top rings. They have conventional cast iron second rings and 3-piece, standard-tension stainless steel oil rings. These ring sets are ideal for street use, race applications, and mild levels of nitrous or forced induction.
Another advantage of a gas ported ring that you may not consider is how much less oil contamination occurs. When you have improved ring sealing, there is less blow-by which not only aids in overall power, but the oil stays cleaner longer. This can save money over the course of the season with fewer oil changes. Total Seal has also seen lower oil temperatures due to less combustion gasses entering the lower end of the engine. As far as legality in different racing sanctions, there are no rules against using gas ported rings while some classes outlaw gas ported pistons.