The "Slow but Steady" '78 Project Build
#711
As it happened, it certainly appeared as though my nostrils did most of the ventilating when I painted, even with a mask! It's not that I don't appreciate the explanations, what I was looking for was a YES or NO to the availability of a type of breather that I could use in place of a pcv valve and still get the job done. I understand the need for proper ventilation, and I'm not looking to avoid having that. Just didn't know if such a thing existed or not. I've seen the breathers with the valve built in and if that's the closest thing to what I was asking then that's what I'll have to get. Thank you gentlemen.
#712
There are three ways I know of Tim. You can use the engine to suck it out. A hose to any maifold vacuum source will work, not just the base of the carb. There is a port on Eddy intakes in the #8 runner. But essentially they all are doing the same thing.
Two is to run a evac system where you put Mopar style breathers in the VC and then weld a tube to the header collector. The exhaust creates a low pressure in the hose and sucks the crank case gases out. The hoses are about 5/8" or the size of a heater hose.
Three is a full on vacuum pump. Then you run a -16 hose to the VC and then a -12 to a firewall mounted tank that has a filter on top. The tank lets the oil separate from the mist and collect in the tank. Really trick looking. You probably have seen these on race cars. These are said to be worth 50 hp on the top end of a 1000hp big block. I have seen it ghetto rigged with an old smog pump drawing the gases out.
Better? #2 is ugly but works. So does all the others though. But the PCV is the only one that forces the engine to eat its own chit.
Two is to run a evac system where you put Mopar style breathers in the VC and then weld a tube to the header collector. The exhaust creates a low pressure in the hose and sucks the crank case gases out. The hoses are about 5/8" or the size of a heater hose.
Three is a full on vacuum pump. Then you run a -16 hose to the VC and then a -12 to a firewall mounted tank that has a filter on top. The tank lets the oil separate from the mist and collect in the tank. Really trick looking. You probably have seen these on race cars. These are said to be worth 50 hp on the top end of a 1000hp big block. I have seen it ghetto rigged with an old smog pump drawing the gases out.
Better? #2 is ugly but works. So does all the others though. But the PCV is the only one that forces the engine to eat its own chit.
#713
Good info Damon. While most of those options seem to be a massive additional amount of work, I might scheme up something with one of the rear vacuum ports on the manifold. Appreciate the info. My original intentions were just to find out if there was a certain type of vc breather that worked like a pcv valve, but without the hose. I'm really not anti-hose to the carb as it is. Wasn't trying to give the impression that I was looking to avoid ventilation, I love a good evacuation as much as the next guy! Kinda figured it would be a more simplistic answer really. LOL
#714
Who is that "next guy" anyway, I've heard a lot about him but we've never met. Oh yeah, and watch those personal insult comments will you...."gentlemen". Sheesh!
This is my breather. It's a single unit, the base of it is a push in PCV valve, and it has a nipple on the side for the hose.
To answer your question if you can get the same result without a hose, no not really. That is, not unless you rig up a mini exhaust fan to the breather!
This is my breather. It's a single unit, the base of it is a push in PCV valve, and it has a nipple on the side for the hose.
To answer your question if you can get the same result without a hose, no not really. That is, not unless you rig up a mini exhaust fan to the breather!
#715
That's great Chuck lol! Yeah I usually get a lesson in evacuation whenever I eat taco salad too. Usually need a breather afterward as well. ANYway, ALAS!! The push-in pcv/breather/ventilator/hose nipple/round chrome thingy is precisely what I will need to obtain. That is, assuming the mini exhaust fans are still on backorder. The 2 breathers that I bought a while back look exactly like what you have on the other side. I am eternally grateful for the information and will begin the search for the pcv breather/stocking stuffer immediately. Man, you are one Super, Moderator sir! Thank you.
#716
There is another way to evacuate the crankcase also. You can connect a hose from the valve covers to the collector or exhaust and it will suck the pressure out better than anything a PCV valve does. Don't see it done on the street often, but lots of drag racers use this system, and it actually builds a little HP this way.
#719
I have NEVER seen it on a street car but have been sure tempted to try it. I was always worried mufflers would cause too much back pressure and they wouldnt work. But then again I think, as long as the gasses are flowing away from the smaller hose they will create low pressure and it has to work.
#720
Well, let me be the first to show you what you were talking about on a street car. It's a Camaro too! It's ironic that someone just posted pics of their car on a FB page. Doubt I'm going to do that but thought I would show you anyway.