There is always the chance that the clearances were all out of spec from new. Maybe subaru is a bit sloppy building them. Maybe that's why they're a bit more prone to failure than other engines.
Oil pressure at idle spec is about 7psi according to toyota, crazy low. With main clearances set at middle of spec, 0W-30 oil and a WRX pump I get 12-15psi at idle.
Who wants to buy a couple of new short blocks, strip, measure and post the data. I'm sure we'd all be very appreciative!
