ive been reading on the older threads about the krank vents and so confused about which/how to install anything! 1st off the automotivespeed.net is working so i cant look into purchasing from there...if someone could please just give me some info on how to install these
1) which hoses does it install to? #1, #2, both?
2) how many couplers/valve would i have to put in each hoses?


i was planning on using the things this guys got ( https://www.s2ki.com/forums/index.ph...f=142&t=513733 ) but his is on an ap2 and put on only one hose...

and on this ap1
(i believe this is orangebarius', if u want me to delete your photo let me know) he has two, one on each hoses.. and i think he purchased from automotivespeed.net but their sites no longer working...

so does anyone know where i could purchase this or would i have to just buy 'couplers/new pcv'?
-Peter

 

are you boosting? if not, I wouldn't even bother. If you are, I would just put it on the #1.

Blow into one end of the valve. You want it set up in a way where you wont be able to blow air into your valve cover, instead, the air flow should go towards the intake manifold.

 

[QUOTE=one_slows2k,Mar 24 2008, 06:42 PM] are you boosting?

 

We still are selling the Krank Vents. The new Automotive Speed site is under construction. Please email me or call to place your order.

Regards,
Asura

 

this is wrong also.

both krank vent pieces allow air to only flow away from the crankcase.

 

which way, away or to the valve cover?

 

using the picture above, vent #2 (nearest the front of the car) pulls air in to the cavity.
vent #1 then pulls air back out and into the inlet manifold.

valves are added to make sure air flows this way.

a common addition is a catch can between the krank case and inlet manifold from vent #1 (this picture) so oil is caught and not fed back into the inlet manifold.

 

Under load, the PCV Krank vent is closed and the breather vent is open.

 

The one and only source of the vacuum (in "our" case) is the intake manifold.
Period.
While accelerating and during engine braking there is a vacuum in the intake manifold.
The KV inline with the OEM PCV valve, the one closest to the firewall, only allows (some) air flow out of the crankcase towards or into the intake manifold.
I say "some" because the front KV, closest to the airbox, also only allows air flow out of the crankcase and it stops air flowing into the crankcase.
This means that the intake manifold can only suck out the air that's allready in the crankcase, creating a vacuum there, not deeper then the vacuum in the intake manifold itself at that time.
If you go from accelerating to constant speed driving, the intake manifolds vacuum is gone, both KV's are closed and maintain the vacuum in the crankcase.
During all this there is no flow through the crankcase.
Flow as in: air going in and being sucked out.
There is only air sucked out.
With crankcase I also mean the volume under the valvecover as that is in principle the same.

Only if there are blow-by gasses and only if they generate enough pressure in the crankcase to open the front KV will it open and let those gasses out to avoid pressure build-up in the crankcase.
That front KV needs to open at very low (crankcase) pressure to avoid pressure build-up and that's also why spring loaded check-valves are not ideal in that position as they need some, even if it is very little pressure, to open.
As far as I could see the original KV's are not spring loaded.

 

Great, I get insulted by a guy who probably thinks his car is really "juntuned." (keep scratching your head, I get the feeling you do this alot) lol

and yes, I consider 250whp and 300whp slow, am shooting for something higher... and how much whp does your juntun has?

Was just curious if you even know how the PCV system works on cars? Or are you just hanging off the krankvent nutsack without really know shit about it?

Here's a quick description of what the PCV system is designed to do:

"The PCV system consists of the breather tube (front) and the PCV valve (back area). The breather tube connects the crankcase(valve cover) to a clean source of fresh air, such as the air cleaner body.

Once inside the engine, the air circulates around the interior of the engine, picking up and clearing away combustion byproduct gases, including a large amount of water vapor, then exits through a simple baffle, screen or mesh to trap oil droplets before being drawn out through the PCV valve, and into the intake manifold."

by not having, this circulation of air into you system, you are doing something that the system was not intended to do. If you think you doing the opposite of what the system was designed to do is beneficial for your car, then by all means try it. But you would think if something this cheap and easy is so beneficial to the engine, manufacturers would've done this a long time ago. eh? And how long has the pcv system been around? hmmm.

my .02

I would definitely recommend the check valve in the pcv tubing (only) for boosted applications to prevent boost from entering the valve cover area, but all others i think it would be just a waste of money.