ok, we all know davids 93 GXE (http://hometown.aol.com/maximapowr/myhomepage/auto.html) when you see the engine there is a breather filter comming out of the intake right before the TB ... how does he have it set up? did he just block off that tube and hook the filter up? does this benefit the car in anyway? (more air to the enigne?)

 

zero gain what so ever..
it keeps the intake manifold slightly cleaner.

 

its attached not attached ot the intake/TB elbow, its attached to the PCV outlet on the front head.

 

LOL duuuuuuuuuuuu.......) so im guessing its just for looks. what a nice VG max. next thing he needs is a custom tur..... nevermind.. does david ever use the forums here?

 

not everybody has the desire to be fast.

having a "breather" can work against you, there have been cases of the cheap filter elements getting sucked into the tb.

 

how would a breather get sucked into the TB, when its in no way connected to the TB or intake manifold??

 

for those of you confused, breathers attach to the PCV outlets of the heads, not to the TB, intake manifold, etc. like Dan said they allow oily blowby from the heads to be released into the atmosphere(engine bay)instead of collecting in the manifold....this is how they are installed(pest2001's car)--->

http://images.cardomain.com/installs...53_27_full.jpg

 

maybe they're not connected to the tb. my bad. stick your finger on the tubing and there is a suction.

 

that's why you remove the tubes and seal off the holes where they were.

 

- dude that looks great! is it on with out any other tubing?, and do you think it effects the CC?

 

CC?

 

cruise control... im just to cool to type it out...

 

There can be a drawback to the filter though. The engine has a tube that sucks for a reason and that is to vent and pull the pressure buildup out of the engine...if you remove the suction (put in a filter) it can cause problems. I am not saying it will but I have heard it could cause leaks and such. It may not on a maxima but I know that it is made to suck for a reason.

That being said it does look good though.

 

As long as you don't cap it off, you should be okay. the suction will help keep the oil in the drain pan where it's supposed to be, but if you cap it off, the block will become pressurized from the blow-by around the rings.. bad idea. it'll start oozing brown blood out most of the gasket seams in no time.

 

I installed a Breather filter on my VE. IT WAS A BAD IDEA, I later thought about it and realized that the air being drawn in through the breather needes to be regestered by the MAFS, but by bypassing it, it will no longer pass the MAFS. There by screwing up the air/fuel mix. Then the 02 sensor will be relied upon to correct the mixture. It will sort of act like A MAJOR VACUUM LEAK, think about it, the engine draws in air through the PCV, out of the crankcase, from the outside, but if the MAFS does not register the air comming in, it will run rich. When I realized this and relinstalled the stock stuff, I then had to decrease the base idle A LOT.

 

I dunno, maybe its a VE thing....it seems to work fine on the VG as long as the PCV inlets are "correctly" sealed off...thus no air leaks after the MAF!

 

It worked fine for mine too. How the PCV is sealed off, has nothing to do with it (mine was perfectly sealed). It will still mess with the mixture. The MAFS still needs to register that amount of air that the PCV is drawing into the engine (contributing to the idle mix).

 

Hmmm, I think I got you now....I know some of my Eclipse buddies have a dual-inlet/outlet catch can/breather...the PCV goes in one side and the line into the intake comes out the other and back to the intake track...thus the air flow consistency is completed but blow-by oil settles. I've also seen this done on a Neon too.

 

Ummmm, you shouldn't vent the PCV like that.. you vent the valve cover tubing coming off the top of the engine.

Also, the valve cover vents and PCV lines running back into the intake are BEHIND the MAF. they play no role in the A/F mix of the engine. (at least they shouldn't) the only way it should mess with your idle is if you didn't get something sealed correctly.
This goes for all engines, not just VE or VG.

 

yeah I really don't see how it would cause an air leak....but heres the way I was explaining it in the other post, this is from a Neon site-->

http://www.cronusmotorsports.com/tec...catchcans.html

and here are some other suggestions for 6 cylinder engines(Supra in this case)

http://cjsupra.kendra.com/PCV-Can.html

 

I guess I was not clear. I was venting the valve cover, on top of the engine. I disconnected the tubing comming out of the air stack, running to the brass tub that runs across the engine. I then attached the breather to the brass tube (and sealed the outlet from the air stack).
So, normally the engines vacuum is drawing air through the engine (removing any blow-by gasses that may be present, and also prevents oil from overheating, my friends civic has to have the PCV valve replaced regularly b/c of this). But now by allowing the engines vacuum to draw air straight through the system but this air being drawn in no longer flows accross the MAFS. There by changing the amount of air that is actually entering the engine, Air is entering the engine through the PCV and through the IACV, but the IACV air is the only one that is being measured by the MAFS.
Any clearer now?

 

so in the long run, will getting a small breather like that hurt my car at all?
i dont really understand it yet. i guess when i read everything over the 3rd time it will click..















*should have my fstb this weekend..

 

IMO, I say get it...as long as you seal everything off right it should be fine, if you have any off idle problems, just go back to stock.

 

now i jsut have to find something that will block off the other side.....i cant always use tape but i want it to look neat.

9.99 at pep boys.

 

measure the opening and buy the right size plug/cap at the hardware store... Jegs.com also has them.

 

Well that David guy must! Did both of you look over the nitrous bottle in the trunk?


PJ

 

I think a while back he said its for show and he's never used it....plus I DON'T think the VG manifold flows fuel too well(look closely its a wet-setup!!) ...seems like it would backfire out the ******* from all the fuel puddling in the runners and the TB elbow!