Spark 2

Is there a safe way to crank / turn over an LS3 Engine to build up oil

pressure without it actually starting? Will this cause any problems /

codes? Is this hard on the starter?

I would like to circulate the oil during and after storage without / or

before starting.

Thanks in advance for your help / opinions.

Have a great weekend!

PowerLabs

Most modern vehicles will crank over without starting if you hold the gas to the floor.

Alternatively you could pull the Left and the Right fuel injector fuses from the fusebox...

canandy2

I was going to ask the same question,its about time to take the Vette off the road. I'll try both tomorrow.

Hey Powerlabs, I hope you give better tech tips than better driving tips for the snow

Paratrooper307

Either disable the fuel injectors or the pump. Don't hold the accelerator to the floor, it will likely still start, as the computer will figure things out, especially on a drive by wire car. It will not damage the starter, unless you crank for prolonged periods without letting the starter cool down. Starters do not have a cooling apparatus, so keep cranking to about 15 seconds or so and it will be fine.

patton

flooring will put it in "clear flood mode"

Spark 2

Thanks for all of the information furnished so far!

One more question. How long will the C6 crank if it doesn't start?

With a key, I would be in control, but with a module I don't know?

Thanks again for your help.

patton

i would have to dig my manual out but no more than 15 secs. and the ECM tells it to stop. if you have a manual trans,put it in neu. and release the clutch ,that will stop it cranking

rws.1

On the C5 I have always put it to the floor then turned the key....

PowerLabs

I think between a Mechanical Engineering degree, and 5 years of ice racing Michigan, Wisconsin and MN, including 3 first place trophies, I've got both the Tech tips AND the Snow driving tips covered

HawaiiC6

When you hit the start button the engine will turn until you hit the starter off button.

Daytona Bob

Am i the only one who see's a problem with this?

Just start the car and let the oil circulate!

Open your storage door so you dont die.

Simple. What am I missing?

PowerLabs

What you are missing is that when you change your oil, the first time you start the engine afterwards, it starts up and runs for a few seconds (2 or 3) with no oil pressure untill the filter fills up all the way and all the oil that was drained works its way everywhere in the engine. All the bearings inside your engine are hydrodynamic bearings; they rely on a thin film of oil to prevent metal to metal contact between moving surfaces. Running such bearings with no oil pressure is VERY damaging to them and these startup cycles with no oil pressure probably cause a large part of the overall wear your engine sees in its life time. It is good policy to crank the engine over a few times to build pressure before starting and it is MANDATORY to do that on a new engine build when you start it up the first time.

Daytona Bob

Thanks. I knew there had to be a good reason behind the OP's need.

Hmm should I be doing this when I change my oil?

LSCHLEM

Just a little sleep. We must remember to turn our clocks back before attempting to start a engine.

PowerLabs

I never did, until I got an oil pressure gauge on a car that didn't have it, and watched as the engine ran for a good 2-3 seconds with the gauge reading "0" every time I started it up after an oil change. Now I do it every time.

Also make sure you fill the new oil filter with oil before you screw it on to minimise how long it takes for the new filter to fill up after every oil change.

Gotcha

If you've got an air compressor then make one of these, you won't even need to turn the motor over

PowerLabs

That won't work the oil into the motor though...

BTW The Clevite Kid just PMed me and pointed out I made a mistake; the bearings on the engine are HydroDYNAMIC, not HydroSTATIC. My bad... That's what I get for typing while eating and watching TV

Gotcha

Sure it will, you run the bottom hose to the 16mm pressure port of the engine block.

2 quarts at 50 psi will prelube the engine for ~15 seconds, even shows on the oil pressure gage with engine sitting still

PowerLabs

Wow, clever!

Unfortunately my Supercharger is fed oil from that port

old motorhead

Isn't this a dab overkill. If you change your oil with the engine warm and you prefill the filter, I can't see any need to do anything other than hit the start button. You have a film of oil on everything and there's more coming in quick order.