[Main bearing clearance question]

Thanks for all the info and replies. I do appreciate it. Again im a newbie on Subarus. I use plasti-gage when im in a pinch but find a more accurate reading when i use a dial bore gauge to measure the housing, mics for the journals, and a tube mic to measure bearing shell thickness. Anyway, im good on the rods...im running them at .0015. I just thought .0030 was too loose on the mains. Would the case not grow a bit after it got hot, expanding the clearance a bit more? Again just asking because I dont know. I dont want to have to do this again, because the first engine was a disaster when i broke it open. It only had 12,000 miles after a poor rebuild.

Also, is there something going on with the 2.5's where they eat the bearings on the first rod journal? We've got 3 2.5's in the shop and all three have the same prob. Thanks again!

[Main bearing clearance question]

Ive already bought a regrind crank and undersized bearings and the clearances are just way off for my liking. The main bearing bore is actually bigger than spec. Out of ignorance, what kind of headaches are we talking about if we do the before mentioned work?

[New from TN.]

Hey there, East TN. new to the forum. I have a 00 Forester L, 5spd car. I am currently rebuilding the motor myself due to someone elses poor excuse of a rebuild before we bought the car. Look forward to hanging out on here and learning some good stuff!

[Main bearing clearance question]

OK so I'm rebuilding the EJ25 in my 00 Forester. Bearing clearance on the mains is .0004-.0012 in the book. We ran the dial bore gauge down the mains and they read around .0030, which is WAY too loose. My question is, can I throw this thing in the CNC machine and wack a few thousandth off each half; then line hone the mains to the correct size? We are used to American v8's so this is new territory. Thanks for any input!