I just removed the AIR pump and all the other hoses. My car has the Edelbrock headers with the AIR tubes. Instead of plugging the AIR pipes I thought about running two PCV breathers (one on driver side one on the passenger) from my valve covers to the AIR tubes. I have seen race cars with this same setup. Has anyone here done this? I also would like to know what kind of hose to use, I don't want the rubber to melt on the header side.

 

dont do that, just plug them what good would that do, either leave the pcv valve hooked to your intake (what i sugest) or put a breather cap on...

 

just plug the air tubes, but a breather on one valve cover and pvc on the other side. thats the best setup imo

 

Why not? Is there a down side to it? I have breathers on it now, I just can't find anything to plug the AIR tubes with and like I said before I've seen race cars with this setup. Does it not pull all the crank case gases out?

Thanks for the response!

 

never heard of anyone running breathers to the air tubes on their headers sounds retarded

 

obviously you dont even know what air tubes are there for, they are a way for you to flow air from your air pump into the exhaust to provide the cat with air to help complete its task... so what race car did u see that had A.I.R. tube headers and cats? i think you saw something else. dont know what it was but crank case gases into exhaust is stupid...

 

The headers when tied to the valve covers pull gases out of the crank case. Some racers claim extra power, IDK but there is a reason for it. I know it sounds stupid but I've seen it over and over again just not with a stock car like mine.

 

I know why they are there and what the system does.


THIS SETUP HAS BEEN USED WITH A RACE CAR NOT A STOCK CAR

And please don't question my knowledge..........

 

If any of you guys don't know, exhaust leaks SUCK--they pull in air. So the setup I'm talking about will pull gases out of the engine thru the exhaust creating + crankcase ventilation.

 

................

 

ive never seen an exhaust leak suck...what is creating a negative pressure for this ocurance? the atmospere? i think not. i shall question your knowledge if you have to ask the original question of this post....you seem like the type of person that would ask if you could use the air pump as a supercharger.
there is no benifit to rigging up your car like u are asking. just because uve seen some backwoods racer do it dosnt meant it works....you have a what apears to be a really nice third gen dont rig it up....

 

crimp the lines and braze them

 

Yes it will pull the gasses out, But i think the vacuum on the intake will be stronger. Except under heavy load. So guess if you want it to pull the crank case into a vacum under all conditions then leave the pcv hooked up and run another line from the header to a vent in the valve cover, but make sure to use a check vavle, of some shorts, like the one they run from the vacuum source to the vacumm resivour.


By your post i can tell your in your late teens early twenties. Your still at that point where you think you have the world be its *****.

Why would it be a good a idea to do this? i can think of a few.
To vent the gasses out under heavy load. Hook up a vac gauge to your then go drive around, when you drop the hammer, the vacum gauge will drop to zero untill the rpms climb, but the vacum will never reach the amount you have at a idle. Now lets think about this, when do you have the most blow by? mmmm could it be when your pouring on the coals? Isnt that the same time that the engine makes the least vacuum? MMMMMM

Exhuast leaks can have exhaust blow out, or have air get sucked in. Dont believe me? Well then learn about this guy, Daniel Bernoulli. Its because of his law, that airplanes fly, carbs work, and exhuast can suck. Look at this little guy, it uses fast moving shop air under 175 psi to pull the tank into 29 inches of mercury. Thats about 10 more inches more of vacuum then a car at idle. brandsplace_1997_977721153.jpg


Ok so now you know that a fluids (exhaust gasses) pressure drops as its speed it increased. MMMMM When you got the hammer dropped, wouldnt you say that the exhaust velocity is pretty high? So then you could say thats its pressure is less then atmosphere? Now wouldnt it be convienent if you could use this vacuum to get rid of something you had alot of at wot? ( blow by) mmmmm


Plus there the other thing, you make more power with a crank case under vacuum because it makes your rings seat better......

 

actually midwest, check you vavum at idle, then rev the motor to a constant 2000 rpms look at your vacum now, wow i bet its up a few inches.. if not you have an exhaust restriction. yea im young u got that right, im realistic about things, ive got a lot to learn but ive covered all this b4 in class and real life practice. its practicaly pointless to do this riged up **** to a car...

 

 

Explain to me how reving it to 2000 in park or neutral is even remotely close to the same as driving the vehicle under load.

See thats your problem you find one thing to be true, ei, if the vacuum goes up a few inches when reving the engine parked in a garage, now you think that the vacuum with always go up...

So you already tested this? What where your hp and tq numbers before, and what where they after. Can you get me the dyno file ?

Heres a link to people that have had great results. http://www.camaros.net/forums/archiv...p/t-16899.html

 

no its a way to test for exhaust restrictions in cars, but it show that vacum isnt the highest at idle. its a test mechanics use. you want me to scan my automotive engines repair I text book for you to read it. dude im not gonna argue anymore if yall old ****ers want to use thes lil tricks to "make hp" do it i dont care, its just funny how alot (not all) of the older generation thinks we dont know crap about cars, but most of us young guys can take a fuel injected 4 banger and beat up on yalls v8s. now i love v8 muscle and have lots of fun with my car and know what the hell im doing so dont get me wrong. im just sayin give us some credit. and why am i argueing with you anyways dont you have a v6? wtf get a V8 or are u afraid of torque....and whats with the link ok so u proved people use this ok. but not on street cars like he wants cause with the exhaust backpressure it doesnt function like intended so hmm what does that mean? its a dumb idea like myself and several others have already mentioned...just remember u think u have me pegged, that im some young no nothing kid. im not one of these little idiots in the theoretical street racing section asking will my 305 rs beat a supra...I have had lots of cars, 4 third gen camaros, 4th gen, and one 67....i do all my own work on them, i am a sucessful industrial mechanic/electrician and decent fabricator so not only do i work on cars, i have fixed multi million dollar machinery, all at age 22...i might be young but im far from a ****ing idiot....

 

I had the air-pipe to air-hose conector on my headers come lose once and exaust was coming out.

Also the cat will probably not last long without air supply.

You must be wery bored to remove the air sistem if you have headers with air tubes.

I would try posting in the exhaust bord.

 

There is no cat.

And for those who don't know what I'm talkling about read this .

Moroso makes a crankcase evac kit, they have for years.

And be sure to click on the instructions to see a diagram to help you better understand.

 

I now understand why you dont need air

It is a interesting set up. Acording to the first NOTE and #4 of instructions, the headers air tubes may not offer the proper functionality. But still looks preatty easy to set up.

Here a pic of were the little clamp wasent tight and had exhaust leak (couldent notice it at idle but turned black after a wile).
About the pic showing how the air pipe goes in to the collector, altought you have less backpressure, NOTE and #4 of the instuction appeare to be the minor requirements.

 

just another post where some young tool bag, with smidge of know, who's still in school tries to better his elders. Well if you didn't know these setups have been run on street/strip motors that run high compression since the 60's. newer street/strip cars running 11's, 10's etc also benefit from these setups. it's not some closet setup some old hick uses to gain power thru witchcraft. Ls1 cars w/ n20 also benefit from this. don't be a fool, stay in school :P

 

You suggest he pull the crankshaft gasses tru the headers air tubes?

 

Thank you, I didn't want to be disrespectful to that guy, two wrongs don't make a right. He will learn though, the hard way.

And yes the ls1 cars benefit from this setup. I read an article where the Moroso evac kit was used and he gained 14 hp form it alone. If I find the article I will post it.

And please understand me whoever reads this, I removed all the smog stuff except the egr. I'm not going out of my way to do this, I'd rather not weld over the AIR tubes for resale value of the Edelbrock headers, they simply are there and the Moroso setup gave me a cheap alternative vs. a new set of headers.


please read this

 

your gonna want them damn air tubes out anyway makes header gasket and spark plug changes a bitch! now the diagram you showed shows the tube going from the breather to the header COLLECTOR, now whether this will work the same way with the AIR TUBES than the COLLECTOR I DONT KNOW

 

I don't know either. The diagram has it a bit further down stream, not much though.
And for those who didn't notice, the one way baffle in the Moroso kit is the same baffle that's on all of these cars already.

 

if you unhook the smog pump and tubes but leave the check-valves screwed on to the AIR tubes on the headers there should be no exhaust leak. if you run the engine and put your finger on the open end of the check valves there is a definate vacume pulse. But i wonder if the AIR tubes being in the primaries and not after the collectors would have a negative effect on scavenging if left open.