:lol: :lol: :lol: :lol: :lol: :lol:
:lolg: :lolg: :lolg: :lolg: :lolg: :thumbs:

 

right on matt :crazy:

 

Gents,
I sure do hate to see a bunch of forum members led astray.

The Moroso kit clearly states thgat it is intended for "open headers" drag racing applications. After installation and oil spewing at high RPM, I contacted Moroso directly, and they stated that above a certain RPM (with full exhaust), the filling effect effect in the exhaust will actually back-pressure in the pipe and negate any vacuum that would have been previously drawn. They suggested that I install a psi/vacuum guage in the line leading to the valve covers. Off came the -12 A/N line and a "T" was installed. Sure enough, the system starts seeing psi at about 3600 RPM (meaning that I was no longer drawing vacuum from the exhaust). I talked with tech again and they stated that they would have expected for this to occur at a lower RPM, and that I must have a very "free flowing" exhaust.

Basically, I think anyone who has made this system work has been utilizing the "breathers" at high RPM to bleed excess psi. With the breathers, there is going to be "some" oil leakage (why do you think GM has no breathers and sealed vapor recovery systems in the newer cars).

The real solution is either an electric vacuum pump (GM makes a nice unit, somewhat small, in the Cadillac) or the truly effective solution as Moroso pointed out is the 3 vane mechanical vacuum pump. This is the direction I would like to go long term.

I currently run a PCV valve and breather combo. Those who have seen my cars in person know that I am a "stickler" for anything that leaks. I currently have no leaks, but I know performance would increase, and piston ring logevity would be improved by returning to a vacuum pump.

On my vette with open headers, I do run the evac system, and it seems to work well.

Pick the proper application, and the solution should be simple.

Aaron

 

Dont know what this stuff it but it is really fun! no just joking! but this forum is nice and just want to get away from the point blank all up in your face stuff...but really i am going to save up some money and go with Barts custom kit he has suggested! If it works for him it has to work for me! :D

 

That is something that I have never tried. I will have to put a gauge on mine to see what it shows but whatever the results from the test is not likely to cause me to change anything because I have an assortment of breathers that I have used. At one time I had a 3 inch breather on each valve cover and when I run it hard the breathers would drip oil out on the valve covers when I put on my current setup which I have used for the past two summers I have not had any oil come out of the breather. If the evac system does not work why is it that with one breather it don't have any oil come out of it but when I had two of them less the evac system and it blew oil all over the engine. All I know is it works for me. Maybe this is like the experts that say the bumble bee can't fly. It would be my guess that I'm maintaining a vacuum on the hose all the time or the pressure from the crankcase is greater than the pressure in the exhaust and in that case it would still work. I have always wanted to put a gauge on my exhaust to see how much back pressure that I have but never got around to it. I should do that before winter sets in since I plan on dropping the oil pan on it anyway it would be a good time to build a new exhaust system.

 

Black bart,

thank you for your info!

My car just came back from the shop supercharged, and I was having this exact problem that we are discussing here. I am new to the supercharger world so this info really helped me out a lot.

I am so glad I stumbled on to this topic, this is why I love the forum!

I will try this as well and see if it works.

Paul

 

Paul before you do it read the post by Aaron@ AKS Racing in this thread since he doubts that it would work I should elaborate on my exhaust system. I have TPIS long tube headers with three inch collectors the collectors are connected to three inch pipes then I have a Y pipe on each side that goes into two pipes per side and I have four glass pack straight through mufflers they are 2 inch and about 14 inchs long. No cats nothing between the engine and the back but pipe.I don't think the 4 2inch glass packs cause much back pressure they just take the edge off of the noise. I have a lot of reasonace but if you put it into the engine you got to get it out.

 

I just read Aaron's post. I think I will be ok. My exhaust setup is Hooker long tubes into dual 3" into 2 chamber flowmasters. Since I don't have any cats or precats or resonators I think I am ok.

What do you think?

 

Sounds like it should work. Be sure to buy the oil seperators not just breathers with a hose connection. Also put them into the headers behind the O2 sensor the oil fumes blowing on the O2 would not be good.

 

Do you think this would create a cloud of black smoke everytime I am on the gas with my car?

 

If I am correct, that's what the oil separators are there for.

Since I have stock exhaust, I will hold out on the evac kit until I install my new exhaust over the winter.

However, Since I have my crankcase hooked up to my air filter, would putting an oil separator in between help keep oil from collecting on the intercooler or blower???? Or is that not what the separators are designed to prevent?

 

I like this thread. :lurk:

 

I can only speak for the one's that I have. NO smoke but other brands may but probably not. The only thing I see coming out of the exhaust is steam from the water/Alky injection system.
The seperator should stop the oil. If any goes through you won't see black smoke it will be light blue.

 

yeah black bart is the guy that will tell you "been there done that" and that saves us rookies a lot of problems :D thanks black bart

 

One other thing that you may want to consider is the header wrap. I have the wrap on my headers and everything is wrapped all the way to the rear axle. When exhaust gas cools it losses velocity if you keep it hot it exits faster and it cools underhood temps. Kiinda cheap way to make more horsepower :D
Just one of so many mods that don't show in signature. Had the headers wrapped for 4 years they still looked good when I checked them this spring.
I have read about how that will ruin the headers but don't see it on mine yet maybe that only apply's to the cheapies time will tell but if they last another four years then that would be worth it for the gains received.

 

Yes mine are wrapped and my fuel lines are wrapped to keep the fuel nice and cold for better atomization

 

My first question is why everyone's seeing so much blowby? I understand Bart cause he's running waaaaay more boost than the rest of us. With a fresh engine (<10k) and total-seal rings I don't see much. And you shouldn't really be bolting a blower onto a tired engine whose rings are shot anyway.

Second- why would a slight oil mist on your K&N cotton filter be any worse that the red filter oil that's already there? The oil is what traps the particles and it should not pass thru the dense gauze medium into the intake. I run a breather cap w/ oil sep from each valve cover to the blower intake. Yes I see a tiny bit of oil in the breather tubes, but not in my intercooler tubing.


[Modified by gcrouse, 1:35 AM 9/6/2003]

 

I don't know what I am getting blowby? My engine has less than 5000miles on it and it was PERFECT before, didn't leak one drop and didn't burn any oil. Now, with the charger it is puking out oil from every vent possible. I am really pissed, and I wonder how long my new engine is gonna last because of this. I now have a temporary fix with the separator and a vent tube that goes to the ground. When I have time I will drill the oil in the exhaust and do it that way.

 

GEORGE I don't think running the hose over to the beather like you describe will result in oil in the blower but since that would be more like a low pressure area instead of a vacuum a lot of people drill a hole and put the hose into the end of the filter. That will draw oil into the blower. I don't think we are in real disagreement on this one just that we were thinking about different installation procedure. The best would be a vacuum pump but that is a more expensive and complicated fix.

 

Anyone supercharged running zero gap rings? I was going to use them as soon as I can rebuild my worn out engine. They are proven to work but I was wondering if anyone here has tried them. I am hoping to hear they help cut off the blowby/oil leakage issue.