The Volvo B230 engines blow them out routinely when running a lot of boost, one of the standard tasks when building a high output engine is to deal with the freeze-lugs in some way - either pulling the factory ones out and fitting fresh, or some sort of retaining bar fitted to help them resist the pressure from the cooling system that pushes them out.
The Volvo B230 engines blow them out routinely when running a lot of boost, one of the standard tasks when building a high output engine is to deal with the freeze-lugs in some way - either pulling the factory ones out and fitting fresh, or some sort of retaining bar fitted to help them resist the pressure from the cooling system that pushes them out.