A&MWS6

i posted a thread a couple of weeks ago about swapping cams and then no oil pressure, well this weekend i installed a ported and polished ls6 oil pump an during the install we noticed a small pin bearing in the oil pan, just trying o figure out what that could go to. Also after putting the new pump in it ran fine for about 5 mins with 40-45psi but when the engine got warmed up the oil pressure went back down to zero! any thoughts?

Mikael

Been outta ls1s for a while now, but since there are no replies, i think that's a roller rocker bearing.

LSONE

iTrader: (1)

he's correct, you should probably pull the valve covers and find out how many are gone, then go hunting with a magnet. I would imagine that you sucked another one into the oil pump, take the old one apart and see what it looks like inside.

A&MWS6

how could this have happened? i did take apart the old oil pump and there was nothing in there.

Grimes

iTrader: (3)

They are referring to the pins from the bearing in your rocker arms. Sometimes stock rocker bearings will start falling apart.

LSONE

iTrader: (1)

hmm, maybe a faulty oil pressure sensor? have you pulled the covers to verify that no oil is reaching the valvetrain? usually where there is one needle bearing there are more aswell. did you replace your o-ring? could it be pinched? i really couldnt see a brand new oil pump crapping out again, unless you have some **** in your pickup tube which is clogging the pump? there are literally tons of possible problems, you're going to need to take it apart again and make sure to get everything.

A&MWS6

i just looked at some pics of rocker bearings and this is not it, it's about an inch in length.

LSONE

iTrader: (1)

then your bearing are possibly taking a **** on you and you are going to need an engine rebuild, but i cant be for sure unless we get some pics. is the strip of metal magnetic?

A&MWS6

it's not a strip, it's round about the diameter of a ball tip pin and about an inch in length.