3sgte recirculated, Now with PICS! Options

[lagos]

I don't understand. We are talking blowby here. The intake charge has already been ingested by the engine correct? The blowby is an air / fuel mixture.

I can tell you that my bogging, smoking, and backfires have all stopped despite my PCV vented to atmosphere.

From the information I have read tonight, it seems Art is correct that the rerouting back into the intake (or exhaust for that matter) serves as a vacuum source for the PCV to help the blowby exit. Another thing I don't understand is why a vacuum source is needed. I don't undertand why that air doesnt just escape without the vacuum source.

it does escape on its own... but the vac just assists it to let it do the job better and faster.

[jgreening]

I am not an expert on these things but I would be willing to bet that the "performance difference" in these options amounts to "mice nuts". I think the PCV system is installed for emissions purposes and there is little to no difference in performance if its vented or recirculated back into the intake. Maybe we should race and find out

[lagos]

I am not an expert on these things but I would be willing to bet that the "performance difference" in these options amounts to "mice nuts". I think the PCV system is installed for emissions purposes and there is little to no difference in performance if its vented or recirculated back into the intake. Maybe we should race and find out

yeah, this topic alwasy comes back to somone trying to justify their cool breather filter.



This post has been edited by lagos: Jul 17, 2006 - 1:29 AM

[jgreening]

I am not an expert on these things but I would be willing to bet that the "performance difference" in these options amounts to "mice nuts". I think the PCV system is installed for emissions purposes and there is little to no difference in performance if its vented or recirculated back into the intake. Maybe we should race and find out

yeah, this topic alwasy comes back to somone trying to justify their cool breather filter.

LOL. You ought to know me better than that. Show me some proof that it helps performance then maybe I will change my mind.

[lagos]

whats the benefit of venting it?


read the first two paragraphs about how those gases are bad for your engine. that alone would make me want to have mine hooked up the right way.

This post has been edited by lagos: Jul 17, 2006 - 1:28 AM

[jgreening]

whats the benefit of venting it?


read the first two paragraphs about how those gases are bad for your engine. that alone would make me want to have mine hooked up the right way.

The PCV system needs a vent. The only benefit over a rerouted line is cleaning up the engine bay and possibly avoiding a clog in the system (assuming that the filter is kept clean).

As for the first two paragraphs, keep in mind that the potential damage occurs if the blowby is not released - not if it isn't routed into the intake path.

[jgreening]

One other big advantage to the filter - less oil in your intake tract and going into your turbo.

[CilverSeliST205]

One other big advantage to the filter - less oil in your intake tract and going into your turbo.

Yea despite factory catch can i still need to clean my intercooler at least twice a year

[lagos]

this is one of those things people always debate about, no matter what the facts are.

ive had mine conected the factory way and never saw any negative issues with it. my ic piping and intercooler stay clean. so i dont know.

This post has been edited by lagos: Jul 17, 2006 - 2:01 PM

[jgreening]

this is one of those things people always debate about, no matter what the facts are.

I don't know about you but I wouldn't debate something "no matter what the facts are". I think the facts (at least to any performance or reliability differences) are not entirely clear here.

[playr158]

just so you guys can bicker more

"the negatives of PCV filters"

prt 1
http://www.mr2oc.com/showthread.php?p=1616409

prt 2
http://www.mr2oc.com/showthread.php?t=159457

have fun

[lagos]

this is one of those things people always debate about, no matter what the facts are.

I don't know about you but I wouldn't debate something "no matter what the facts are". I think the facts (at least to any performance or reliability differences) are not entirely clear here.

well. .. i didnt really mean it like that. what i ment was that you can show me some proof...but ill argue my point and vice versa. its one of those things that people never agree on.

[phattyduck]

I don't understand. We are talking blowby here. The intake charge has already been ingested by the engine correct? The blowby is an air / fuel mixture.

I can tell you that my bogging, smoking, and backfires have all stopped despite my PCV vented to atmosphere.

From the information I have read tonight, it seems Art is correct that the rerouting back into the intake (or exhaust for that matter) serves as a vacuum source for the PCV to help the blowby exit. Another thing I don't understand is why a vacuum source is needed. I don't undertand why that air doesnt just escape without the vacuum source.

The BOV is much more important that the PCV when it comes to how the car runs.

As a quick note, if you route the PCV to the exhaust, this only works on N/A cars with a fast-acting one way valve inline. The negative half of each exhaust pulse creates the vacuum. Turbo cars generally have pressurized exhaust (pre-turbo) or non-pulsing exhaust (post turbo) and thus cannot use that method.

The more vacuum there is in the crankcase, the better. The pistons actually have somewhat significant pumping losses moving the air around inside the motor. Big V8 drag cars often have specific vacuum pumps to keep the crankcase at a reasonable vacuum (and gain 10s of HP from it).

-Charlie

[jgreening]

Here's some good information with testing.

PCV Thread

I have only read the initial post so far but the results were interesting.

[celicast3sgte]

i cant help but want to play with your turbo... hehe im looking into a gt30r but its just really expensive. i mean i can afford it but the cheapest i found one was almost 1000$ new. ouchie

[99GT]

Bumping to read later...