Need info on 2.5 lt SUB motor

[TomsSVX]

Originally Posted by robinhoodof she

Hey thanks guy's for all the suggestions, just logged on here now...been work'n late everynight...
So these are common for piston slap....hummmm car is a 99 with 160,000 miles, few weeks ago I heard "something", sounded like bottom end noise but was'nt sure. week later he told me it overheated on the way home (never did this before) so I assumed it was the waterpump...previous sound seemed to come from the drivers side front area. When I pulled off the front end I found that the belt, idler & water pump had recently been replaced. Had a journeyman mechanic come over & listen & he figures it's bottom end. But you guys could be right piston slaps a possibility.
But I don't know why it overheated...could be a relay or sensor...will have to look into further....THANKS AGAIN!!!!
oh it is dohc...can I swap any motor in it's place???????

Difference between piston slap and rod knock is when the engine is cold, piston slap will be louder and as it heats up get quieter. If it were rod knock, the hotter the engine(oil temp) the louder the noise. My Forester has some noticable slap and has been running for a very long time.

Tom