What is the advantage of doing this mod??? I have a 2000 if that matters...

 

DrCoffee - the pics did not come up on your post. But are just saying turn the filter around so that the arrow is in the other direction. I have this mod too, and same probs - get a small amount of oil then nothing. I thought filter just got saturated and then became useless. I removed filter - but have not been out in vette since winter arrived.

Your right this forum is great to discuss ideas. :iagree: :steering:

 

Turn the arrow in the opposite direction and see if it helps.

 

the oil in the crankcase gasses will be drawn into the intake maifold and back into the cylinders. It will reduce the octane rating as it is not combustible and will burn into the piston head damaging the long term health of the engine. The problem is that the LS1 is designed to have vacuum in the crankcase, so eliminating the PCV system is not a good idea because it draws out moisture and aids in ring sealing. You would need to have a vacuum pump to draw out the gasses to the outside and if the vacuum pressure is too high you have bearing problems due to poor oiling. Too low and it is useless, nevere mind the expense of the system. So what's left is filtering out the oil and allowing the crankcase gasses to be burned as designed. The key is to remove the oil. The catch can is how you do this. The fliter as descibed has many variations on its setup. Each person has there own preference. My guess is that you want to try to cool the gasses exiting the crankcase to help in precipitation and the filter catches the oil before entering the intake. Some LS1s have more blow by than others, so your car may have very little oil coming out or it may have alot based on the rings in your engine. This is really an ounce of prevention thinking. It's cheap and may help the car last longer. For $15 it is a reasonable mod. IMHO. :yesnod:

 

I wasn't aware of that; ...are you sure? One would think that pressure build-up in the crankcase is inherent in engines. If there is a designed-in vacuum in the crankcase, you would be sucking air back thru the PCV and filter, correct? Or, maybe it's just that the intake vacuum overpowers it?

BTW, I've got a pretty full bowl now; it's dirtied up the filter, so time to clean it out. The idea of pushing the gasses the opposite direction thru the filter seems like a good one - eliminate the 'soda straw" effect.

 

I meant to say, The LS1 engine is designed to have a pcv vacuum system and eliminating it would not be good.

 

dr -- thanks for all the follow up. I don't really understand the effect of reversing the direction of the compressor filter, but hey, if it works for you, let us know and I'll give her a shot.

2 more questions for you, as your setup has two other differences versus vetterdstr's:
(1) it appears you've completely removed the PCV valve, whereas I think Andy left it inline with the new check valve in vetterdstr's car. Any thoughts?
(2) in the following picture, you left the air hose connected to the intake -- honestly, I'm not sure what direction the air is actually supposed to flow in this hose and what effects happen under forced induction, but do you plan to move it once you get your supercharger in?



Thanks. :cheers:


[Modified by SteveL2, 10:32 AM 2/24/2004]