5 Reasons Gas Orifice Piston Rings Make a Huge Difference

By this point, anyone with a fairly solid knowledge of internal combustion engine mechanics and piston rings is familiar with the ubiquitous and downright unpleasant effects of engine blow-by. Not only does blowing reduce engine efficiency and reduce engine oil life, it also has a significant impact on performance gains. For all of us here, these are words we never like to hear.

So what can be done to prevent these horrible but seemingly inevitable problems from materializing in the first place? The guys at Shaver Specialty Race Enginespondered these same questions for quite a while, and the crew was ready to end all the debate.

With help from the piston ring gurus at Total Seala series of torture tests were put into play. The goal was simple: determine whether a gas-orificed piston or a gas-orificed piston ring was better for performance, then compare the two to a standard configuration without gas orifice.

Since Total Seal has been studying cylinder-to-piston sealing for over 50 years, providing professional insight into the matter was pretty much second nature. Widely recognized for its “zero gap ring technology”, Total Seal is the undisputed king of the piston ring. From Formula 1 internals to weekend warrior drag racers and street machines, there isn’t an engine block on the planet that this brand isn’t willing to study and improve.

This brings us back to the whole subject of gas-ported top rings, and whether or not this technology will help enhance a piston ring’s ability to seat (and subsequently seal out) harmful fumes emitted into the combustion chamber. . But how does this magical ‘ring of fire’ actually work, and what are the inevitable downsides to opting for this very specific style of engine upgrade?

Let’s take it from the top

Unlike many of its competitors’ models, Total Seal Gas Rings are made with a proprietary set of horizontal slots that have been machined directly into the top perch of the ring itself. The purpose of this subtle modification is to channel the combustion gases inwards rather than outwards. This provides a specialized bevel inside the ring to collect these gases and press the ring more firmly against the cylinder wall.

Not only does this dramatically improve ring sealing, but it also eliminates the risk of failure during heavy duty operation due to reliance on natural by-products produced by rotating mass and internal engine temperatures. This creates a series of additional benefits that are impossible to ignore, with the following five benefits being the most notable.

1. Keeping that oil slick, one bucket at a time

One of the main reasons race car teams and high performance builders prefer gas-ported piston rings is the low oil contamination once the engine is broken in. By improving the ability of the piston ring to seal from the bridge of the block down, blow-by becomes a worry of the past.

Plus, there’s no more carbon buildup in the combustion chamber or super opaque oil on fluid change day. This not only saves street machine owners a significant amount of money, since oil changes don’t have to be done as frequently, but it also extends the life of the engine.

2. Gas pressure isn’t just for chili

Gas orifice rings have more gas orifices than the typical gas orifice piston. As a result, the gas pressure is distributed more evenly. This produces a better ring seal. For more on improving gas pressure via ported piston rings, be sure to check out Total Seal’s YouTube channel, as it’s full of information related to this topic.

3. Piston Power is a Go-Go for launch

Thanks to the gas orifice on the ring itself (instead of the piston), the elasticity of the surface of the upper ring is not weakened by the orifice. The exhaust valve dump pockets see the greatest benefit. This is because the concept drastically reduces the amount of hot combustion gases that hit the block. Not only does this keep the engine oil cooler, it also generates more horsepower by reducing heat soak, which is essentially the best of both worlds.

piston rings

4. FTW self-scrubbing cylinder ports

Since piston rings are not nailed in any way, their floating and rotating physiology allows them to touch virtually every nook and cranny of the cylinder bore wall. Another advantage is that the gas ports on the piston ring of Total Seal are self-cleaning. Longevity remains one of the main selling points of this performance product.

A gas-orificed top ring eliminates the headaches associated with orificed pistons. This is because it constantly wiggles within the confines of the ring on the piston itself, forcing the cylinder walls to wear evenly over time.

piston rings

5. How to get gas piston ring performance

When deciding on a set of Total Seal piston rings, check to see if your engine is supported by the brand’s Classic Race line of ductile molybdenum rings. These upgraded rings are also gas ported but are more racing focused. Due to their unique genetic makeup, they offer impressive cost-per-performance advantages.

As one of the many options within the range of Total Seal piston rings, CR Classic piston rings sit on ductile iron. Additionally, the ring pack is equipped with plasma-moly coated top rings. By running conventional cast iron second rings and three-piece standard tension stainless steel oil rings, these street and race internal upgrades can even withstand the abuse offered by nitrous and induction rigs. forced low level.

Separating piston pumps

Total Seal offers its gas-passed rings in a wide range of configurations, even as part of the company’s industry-leading gapless design and ever-popular Advanced Profiling (AP) steel ring assemblies. However, as we mentioned in the intro, gas carrying can be added to virtually any top ring in the wallet for a fee, so give Total Seal a shout to see if they have your specific application. covered.

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