motowells

Just checking to make sure I am on the right track after reading all the posts here.

I have a brand new 6.2 crate motor, removed the pan and replaced with the GM 19212593 oil pan, pickup and new o-ring. First LS motor, never fired it up with pan that came with it due to my swap.

Oil pressure cold is 28-30lbs, after warm and idle its 16-20lbs

Pressure spikes good when squeeze the throttle (40-50)

Thinking of redoing the o-ring and dropping the pan.

Although, I've read a few posts where these numbers seem reasonable for hot motor at idle.

Still has original oil from factory in it.

Obviously don't want to take any unnecessary risks with this new motor.

Gauges - I am using Dakota Digital VHX with the BIM module reading the ODBII port, so I believe this pressure is getting updated directly from the reading of the motor's ECM.

Thanks in advance for any feedback

Nostang

iTrader: (4)

Put a mechanical gauge on the engine to avoid any errors. Could be a gauge error. I would also check the gm specs for oil pressure on those crate engines before tearing into the engine.

tech@WS6store

iTrader: (2)

Per GM...id imagine using their std recommended 5w30 mobile1.
This is for a 2010 Camaro ls engines
so that is why it also specifies the afm bypass in pan

motowells

Roger that on the mechanical gauge. I have the parts left over from the priming so I can attempt to pull pressure off that, any issue with lower front drivers side?

If I am below 24 at 1K then I will be sure to drop and replace o-ring.

Thanks for the GM specs tech@WS6store

I will report findings

tech@WS6store

iTrader: (2)

Did you use any break in oil etc?

24psi hot. Any less than that on a new engine would worry me. Does your new oil pan have the bypass in the pan above the filter location? If so, plug that.

G Atsma

Did you check for aeration of the oil (bubbles/foam on dipstick)? Do the O-ring if there is.

joyridin'

iTrader: (1)

My gauge may be a little off, but when I installed my crate engine, it was never that low and after 2k miles, still is not that low.

When I changed the pick-up tube, the o-ring on the original pick-up was a lot thicker than the one on the pick-up I bought from GM. I used the original one and the one on the new pick-up would have been pretty loose.

motowells

Checked today for aeration, foamyness, bubbles in oil - none to be found. Clean and clear. One odd observation noted - when I pulled the dipstick it's as if I released some pressure from the system.

Is that normal or indicative of an o-ring issue?

Thank you

tech@WS6store

iTrader: (2)

Did you block the pcv ports off?

motowells

Yes sir, left those with the caps on. Should I run those to the intake tube?

tech@WS6store

iTrader: (2)

The valley cover goes to pass side of intake. pass valve cover goes to air intake after maf but before tb.

07NBSChevy

iTrader: (1)

That does seem a bit low. I just recently went through the break-in procedure on my 430-Hp Crate LS3 on an engine stand. Cold Idle was around 45 psi and hot idle was around 35 psi. My stand uses a Liquid Filled Mechanical Gauge so it should be very accurate. I am using Mobil1 Extended Performance 5w30 Full Synthetic in it if that matters. What weight oil are you using? In my opinion, and what I go by, anything less than 22 psi at hot idle is a concern, especially on a new engine.

WS6Store has got you going in the right direction. The Crank Case Pressure could be the cause of the lower oil pressure.

There should not be in crankcase Pressure, at least none to be noticed through the DipStick tube.

motowells

Just curious if you can pull oil pressure from the front drivers side oil sending port? I was thinking of going from the 16M 1.5 to 1/8 NPT for the mechanical gauge.

If not, is there an easy way to tap into a place near the oil filter or do I just need to pull it from the top of the motor?

Thanks

motowells

! Thank you, I will change this

motowells

I am using the oil that came with the motor from GM. Still only have put a couple break in miles on it before stopping and trying to figure out this oil pressure issue.

I have Mobile 1 5W/30 with new filter ready to go once I complete the first leg of the recommended break in procedure.

Thank you

tech@WS6store

iTrader: (2)

Most places will recommend not using fulk synth for break in. You should instead use a break in oil or concentrated oil additive and conventional oil for the initial break in period. Break in oils are popular now and nearly any auto parts store and even walmart sells either the additive or the oil.

Then you can run whatever you want.

Even comps unwritten rule is to use break in oil on any of their cams or lifters.

Paul Bell

iTrader: (9)

Welcome motowells to LS1tech!

An LS3 is a genIV engine so this thread is now here in the genIV internal engine section.

1989GTA

What rpm does you motor idle at?

motowells

Very true, that's how I always broke in bbc and sbc motors but was trying to follow the GM book on this one and use the oil that came in the motor from factory. Guess I need to do a bit more reading on this. Thanks for the input. I will look more into break-in recommendations.

motowells

Motor idles around 550 ~600 fairly low.

Thanks,

Jeff