Here is a definitive statement about low tension rings from a company that has skin in the game !!
Jaahn
At the same time, new PFI and GDI engine compression ratios have increased from 9:1 to as high as 14:1. These higher compression ratios dramatically increase cylinder compression and the overall pressure for fuel ignition, sometimes as high as 2000 psi.
All modern engines use low tension piston rings.
https://www.bgaustralia.com.au/news/technical-advice/pressure-low-tension-piston-rings
Keep reading to see some down sides !
Or another point of view for modified engines ! Interesting facts !
https://www.dragzine.com/tech-stories/engine-tech-understanding-piston-ring-tension/
Take piston rings, for example. Get ring tension right and you’ll collect free horsepower and promote long engine life. Get it wrong, and you’ll end up with a short-lived engine that never achieves full potential.
How can piston rings have so much influence over an engine? Easy. The ring package can account for around 37 percent of the total friction in the motor. To break it down further, internal friction losses from all sources can amount to 40 percent of total brake horsepower, and pistons and rings account for 50 percent of that loss. So ring friction by itself can account for up to 15 percent of brake horsepower.
read on ====
Jaahn
Under pressure: Low tension piston rings
In order to reduce frictional drag, energy loss and increase fuel efficiency, petrol direct injection (GDI) engines use thinner and lighter piston rings, called low-tension piston rings. Piston ring spring force in older port fuel injection (PFI) engines used to be as high as 30 psi. New PFI and GDI engines can have more than 60 percent reduction in sealing pressure on the cylinder walls.At the same time, new PFI and GDI engine compression ratios have increased from 9:1 to as high as 14:1. These higher compression ratios dramatically increase cylinder compression and the overall pressure for fuel ignition, sometimes as high as 2000 psi.
All modern engines use low tension piston rings.
https://www.bgaustralia.com.au/news/technical-advice/pressure-low-tension-piston-rings
Keep reading to see some down sides !
Or another point of view for modified engines ! Interesting facts !
https://www.dragzine.com/tech-stories/engine-tech-understanding-piston-ring-tension/
Take piston rings, for example. Get ring tension right and you’ll collect free horsepower and promote long engine life. Get it wrong, and you’ll end up with a short-lived engine that never achieves full potential.
How can piston rings have so much influence over an engine? Easy. The ring package can account for around 37 percent of the total friction in the motor. To break it down further, internal friction losses from all sources can amount to 40 percent of total brake horsepower, and pistons and rings account for 50 percent of that loss. So ring friction by itself can account for up to 15 percent of brake horsepower.
read on ====