think i spun a bearing in the truck yesterday

the truck was flooded a bit so i held it to the floor.and when it started it revved to about 3000 or so.and it has a tappity tap now.damn i was hoping to get the summer out of it till the other one was finished. so i am parked until the other motor is finished i think.gonna pull the pan this week to see for sure. but i scrached one bearing just a tiny bit when i was putting it in and they ranged from 2.5 thousandths to 2.9. or so i read on the plastgauge. this was the first engine i have ever built by myself with my friend kinda watching over my shoulder. so i got two years out of it. and i rebearinged it this spring, that is when i scratched the bearing. i got 5 runs out of it this year. it is the one that is leaking airbubbles into the rad so it was on its way out.
atleast it was a very low budget build.
kyle

bearings and airbubbles...... wat u mean ? and that tappity tap might be a lifter

Or bent push rod.

i went thru the lifters 3 times. they were all good. i hope i am wrong though.but i dont think so.

i got the motor out tonite finally and number 3 and 7 rod bearings are loose. i will be replacing the crank in this and using this engine in a 6x6 we are buying this summer.
does anyone have any ideas as to what would have caused this or probably just novice install on the bearings.(me being the novice)
it is a dove head,standard bore with stock crank and rods and a set of hyper flat top pistons, comp cam around 521 lift. torquer cam. no water was in the oil when i drained it, i change the oil every 2nd run.using a rear sump oil pan from a truck. 9 quarts i think.stock oil pump and pickup.i checked clearance on the bearings with plastigauge and i read between 2.5 and 2.9 thousandths. ran 15w 40 oil. i think the damage was done in the pit and not at the garage like i had previosly thought because the truck would not crank over when it got hot, hot as in 190. thought i had a bad battery but both batteries tested out fine.
i run the engine around 52-5400 max rpm.
thank you. kyle r

nuclearcobra wrote: bearings and airbubbles...... wat u mean ? and that tappity tap might be a lifter

i replaced the bearings myself this spring, first timer.
the rad has had airbubbles in it since last fall, thought it was a head or head gasket but i changed both and still had these tiny little bubbles coming out the rad filler cap.but not getting any water back in the oil or ontop of any pistons. so must be a warped deck or something else.
and the tappity tap turned into a knockity knock fast.