problems after rebuild

[Deven]

Well Ive searched and didnt find what I need so heres my question.

I just fully rebuild my 96 eclipse gst and its runs great but after a test run I thought I heard a little bottom end noise so I pulled the oil pan and the rod caps and they are worn funny the middles of each rod bearing is worn (All shiny) I tested the clearance before I started it with plastigage and it it says im at about .045 mm witch is sapose to be in spec. I have arp studs in the rods and a brand new crank I dont have a stretch gauge but I fallowed arps instructions on torquing they say 38 lbs. Im just not sure where I went wrong should I try to run it more? Ive got a lot of money into this motor and dont want to destroy it.

The only thing I can think of is when I first started it it reved to about 3k rpms I turned it over a lot before starting it and used assembly lube on each bearing.

 

[bigbird94]

If you run arp rod/main bolts you must line hone everything. Big end of the rod is probably out of round. I wouldn't drive it.

 

[Deven]

Well Im running just the ARP rod studs because thats all that was sapose to be torque to yield and I couldn't find stock replacements. nowhere said there was anything special needed. If the rods are out of round wouldn't I get bad clearance readings? and its the same on every rod.

 

[bigbird94]

Every case is different. Im sure some people get away without machine work. If you used plastigauge dont put too mich faith in those readings.