Crankin the Chev...

[stephen low]

Hmmmm GM service wank factor!

What's wrong with cranking it over numerous times without firing or doesn't the GM pump push enough at cranking speed?

If the old motors could be oil primed with a drill I'm sure cranking off the starter isn't going to be too much different - tell me I'm wrong!! Its not as if it's a race engine be gods!

Better buy some ear muffs too so those delicate ears don't become soiled when the motor finally fires into life!!

[Tenrocca]

Originally Posted by stephen low

Better buy some ear muffs too so those delicate ears don't become soiled when the motor finally fires into life!!

hehe...headers only for first start - You should be able to hear it down there.

[Rebel1]

I think it is just insurance to prime the oil pump and get immediate oil pressure upon firing.

The local tune/engine shop does this with all new engines be they ford or chev.

I'm gonna steal their patented pre-oiler when I start mine. It consists of a weed spray from bunnings...you know the 5 ltr spray thingy with a air pump on top. Bunnings sell them as cheap as chips for spraying plants.

The engine shop has removed the spray nossle and fitted a small tap/valve on the end of the hose.

They claim they can get up to 40psi of oil into the engine to ensure oil is right thru an engine. They crank the engine without plugs for a short while.

Anyways...cant harm I spose.

[hewey]

Tenrocca,

We started the LS-1 in our Cobra for the first time last week.
We rebuilt the motor ourselves, and lubed everything thoroughly during assembly.
We didn't see much oil pressure on the guage while cranking, but as soon as she fired - loads.
Priming the pump is a good idea if you have the time and materials, but I believe it's a luxury.
If you consider how "Primed" an LS-1 is when it's been sitting idle in your garage for 6 months - I think you can safely assume that the pump will prime itself.
From our experieince - you aren't doing enough revs while cranking to see much pressure - mind you it looks from the video as though your battery has more grunt than ours as your motor is turning over a bit faster than our was - so you might see "some" pressure.

Note to self - buy a new battery !