As some of you know I have a brand new LS6 in my 02 Z06 that blows the dip stick out. This afternoon I check to see what's inside the air-bridge and throttle body. More oil. How can the oil get in there? The PCV system is hooked up after the air-bridge.

Also, is it normal to have major air bubbles in the radiator over-flow?

Dave

 

Hows your oil pressure normal??

 

sounds like you have "blow-by"

 

The oil pressure is strong. It's a ported and shimmed pump. 30 at idle...over 50 going down the road.

 

I'm taking the car in for a compression and leak down test tomorrow. I'll let you know what we find.

 

Is it a stock short? Sounds like headgasket or piston/ringland problems.

 

Update:

The compression test was great 125-130 psi on all 8 cylinders. Good news!

The leak-down has all 8 cylinders at 5%-8%. Good news!

The air bridge and throttle body still have oil in them. WTF?

The radiator over flow tank still looks like a jacuzzi tub on full blast. WTF?

NO smoke come out of the exhaust at all. Good news!

The car runs strong as hell. I've pounded on it yet... but you can tell!

It's a forged LS6 with a 227/231 591 113 cam and Stage 2X heads.

Any more ideas?

Dave

 

i say **** it... put ur foot thru the floorboard and let it eat!

 

I don't even know if this is possible to do, but is the PCV valve in backwards?

DISCLAIMER: I'm not a mechanic. Don't want to be a mechanic. I do like to fix my own car because I typically don't trust your average everyday dealer mechanic, unless I've been drinking with him - then he will never touch my car. When I do fix my car, I dig out at least THREE reliable sources on how to actually make the repair - I read them and keep them handy while I do the repair. So the above suggestion is based on little to no information. Sorry if I wasted your time. But I do wish you the best in solving your problem.

 

sounds like you are pressurizing cooling system, not good

 

AMW Catch Can? Don had the same problem........

 

Hey Duane,

Next time you fire up your ZO6. Tell me if the radiator over flow tank looks like a jacuzzi? I was talking to Don and said he remembers that it did?

I took the catch can off and re-installed the stock PCV system to see if that made a difference? Maybe tomorrow I'll try the catch can again.

Dave

 

I fired it up and let run for awhile....no major bubbles, sorry. Hope you find out whats wrong.

 

Hmmmm,

https://ls1tech.com/forums/generation-iii-internal-engine/317890-cometics-leaking.html ???