What causes ringland failures?

Our question of the week this week is what are the common causes of ring-land failures in Subaru's?

There are three rings on each piston in a Subaru engine.  The first 2 are compression rings, and the third is an oil control ring.  The metal pieces of the piston that hold the rings in place are the ring-lands, and if they crack or break, then the rings are not properly held in place to do their job.  When that happens, there are a number of issues that can come up as a result.

This is one of the most common failures in a turbo-charged Subaru engine, so this is something that many enthusiasts are concerned about, so we do get a lot of questions about this topic.

In this video we talk about the common causes of ring-land failure, what you want to look out for, and what can be done to prevent it.

Thanks for watching and StayTuned!