LS1 Catch/con can

[gmail]

wow that sucks i thought they were better then that.

 

[yamahaSHO]

ALL engines suffer from blow-by. How much of it depends on many variables.

 

[Izzmo]

wow that sucks i thought they were better then that.

It's not like it's a huge problem or anything...

 

[SHOZ123]

The V8 has a much higher flow crank case ventilation system because it uses a PCV valve directly connected to the intake.

Is this good or bad? Good as far as keeping the oil clean, bad as far as coking up the intake. Great if you seal the crankcase vents and use a condensation can inline that removes the gunk and also operates the crankcase under a vacuum at times when there is an intake vacuum.

 

[yamahaSHO]

The V6's crankcase is directly connected to the intake as well... weird.

 

[SHOZ123]

The V6's crankcase is directly connected to the intake as well... weird.

But through venturi ports which do not have anywhere near the flow rate of the PCV valve used on the V8..

 

[yamahaSHO]

Do you have a diagram of the V8?

 

[SHOZ123]

Yes but it is copyrighted data.

 

[yamahaSHO]

Um.... okay... I'm trying to see why one would draw more vacuum than the other. You can PM it to me if you'd like.

 

[SHOZ123]

Well that stuff is being removed when I post it.

Basically there is an oil separator in the valley like the V6. This leads to a hose that has the PCV valve located in it and is then connected to the surge tank. There is one fresh air intake port on each valve cover. These are connected by a Y fitting to one hose that is in then connected to the pre-TB intake track after the MAF.

The V8 PCV system is like 99% of the cars on the road today.

 

[yamahaSHO]

Aside from not having an actual valve, if I'm reading it right, it's not too much different than the V6.

 

[SHOZ123]

The only difference really is where the gasses are introduced into the intake. The V6 has three venturi ports in the throttle body. The V8 dumps it into the surge tank after the TB.