500Stroker

Not Piston slap. This sounds just like when you start up a dry (un primed) engine after you have just changed the oil. It may be deeper then the head. The inside of the engine is spotless. The owners manual states "SJ" oil, I am beginning to wounder if the lack of Zinc has prematurely worn out the main and rod bearings.

Passenger side rear cylinder. I can hear the knock in the intake port. Im with you, let it blow then swap it out. Thanks for all the help

Well no go I did all the above and it still rattels on start up. And know it knocks until the engine is warm. When I had the pan of I moved the rods around and check crank end play all appeared OK. What's left?

Anyone have a link or PDF for the Engine Service Manual for a 2002 Outback 2.5 Thanks in advance

No I was in jam for time, I did not check pressure hot. I like your idea about the rocker shafts and ports. Do you know what the torque is?

How often are you suppose to reset the valves? Hot or cold engine?

Checked oil pressure this am, cold engine, it pegged an 80 psi gauge in a micro second. I dont think there is anything wrong with the pump. I might drop the pan and look at the pickup. What do you think?

Cool, looks like a plan. 70 psi hot or cold or dont it matter?

No go, I changed the oil filter using a quality WIX filter and topped it off with a fresh fill of 10W-30 Shell Rottela. Clatter is unchanged, Got any other ideas?

How much MMO do you add to the sump?

According to the sticker on the windshield the oil was changed approx. 2500 ago. No markings on the oil filter. Does this vintage of engine require zinc in the oil?

I recently picked up a 2002 Outback 2.5, 149000 miles On cold startup and hot startup (after the car sets for 20-30 minutes) I hear a fairly loud clattering sound coming from the passenger side of the engine. The clatter stops after a few seconds, like after it builds oil pressure? What componet would cause this on a OHC engine? I dont believe it to be a piston/ rod issue, noise is coming from the head. Any help would be appreciated