Line Boring Service for Subaru EJ EnginesSubaru EJ engines are often perceived as having weak main bearings, leading to oil pressure issues and premature failure of both main and rod bearings. However, the problem typically lies not with the bearings themselves but with the alignment of the main bearing bores in the engine block. In almost every EJ block, the main bearing bore alignment is likely out of spec, which can cause these issues. To address this, we offer a precision vertical CNC