Why 2 PVC's?
Race Director
Joined: Dec 1999
Posts: 16,945
Likes: 9
Because someone messed it up, you should have a PCV on one side and a brether or a tube to the aircleaner on the other side (or a tube w/ a charcoal filter inline), the filter is there so clean air flows through the crankcase
Team Owner
Joined: Jul 2001
Posts: 182,997
Likes: 88
From: Lakeland, FL
Cruise-In IV-V-VI-VII-VIII Veteran
St. Jude Donor '03, '06, '17
Originally Posted by CA-Legal-Vette
Only one pcv per car.
just a crankcase evacuation system... I just don't want to suck oily and hot air into the engine.. Hot air = less power...
Race Director
Joined: Dec 1999
Posts: 16,945
Likes: 9
Like there would be any noticable difference from that tiny amount of air, when you are at WOT (so when you want full power) the amount coming from the PCV is what ... 0.000001% ???
I have an exhaust scavenged system also, have had it for years, I built my own from those one way valves used on smog headers (82/84 & later TPI engines) and it works very well but it could pose problems with emissions if they are very stringent.
IMO that was a meaningless reply, only to "show off" what you have, the post was about his 2 PCVs not about what someone else has.
I have an exhaust scavenged system also, have had it for years, I built my own from those one way valves used on smog headers (82/84 & later TPI engines) and it works very well but it could pose problems with emissions if they are very stringent.
IMO that was a meaningless reply, only to "show off" what you have, the post was about his 2 PCVs not about what someone else has.
Race Director
Joined: May 2004
Posts: 11,920
Likes: 2
Originally Posted by Twin_Turbo
IMO that was a meaningless reply, only to "show off" what you have, the post was about his 2 PCVs not about what someone else has.
Ooooh, feeling a little under the weather today are we..... Sir?I can relate as I woke up to see white everywhere this morning.....
Guess it's on us now!
Melting Slicks
Joined: Jan 2004
Posts: 2,527
Likes: 1
From: St. Petersburg, Fl///Columbus, Ohio
Make sure It's really 2 PCV valves...... Where my breather tube goes into my valve cover LOOKS like another PCV but it's not!!!
White everywhere????? Big Cocaine sale?????...LOL It's the best I could do this early
White everywhere????? Big Cocaine sale?????...LOL It's the best I could do this early
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Melting Slicks
Joined: Jan 2004
Posts: 2,527
Likes: 1
From: St. Petersburg, Fl///Columbus, Ohio
Originally Posted by Twin_Turbo
IMO that was a meaningless reply, only to "show off" what you have
Isn't showing Off what us Corvette owners do best???
Last edited by jcswm; Oct 30, 2004 at 08:48 AM.
Le Mans Master
Joined: Oct 2002
Posts: 7,098
Likes: 378
From: Las Vegas - Just stop perpetuating myths please.
Good catch double T!
[QUOTE=yellow 72]
AMEN brother!
I'll second that AMEN bro! But Hey, some of us need the high post count to give the perception we know something about exhaust scavaging. Since i only run a PVC i'll just STFU.
I won't mention how a good operating PVC is really a control vacuum leak. And i won't say how the carb needs to be calibrated for this leak. Won't try to explain how the PVC is designed to seal shut when engine is off/no vac (or backfire) but regulates vac flow at idle/low rpm/hi vac for low flow - then moves larger amounts of airflow at WOT. Can't say then about why the PVC needs to be opened for hi flow at WOT to remove the greater amount of piston blow-by gasses in the crankcase at WOT. Better not mention a flow path is needed from one valve cover breather through the crankcase then back up through the PVC and into the intake. Now i also shouldn't say that breather is/can sometimes just plumbing to aircleaner for a clean air suction.
Won't try to confuse ya Andrew so i'll STFU. :o cardo0
Originally Posted by
IMO that was a meaningless reply, only to "show off" what you have, the post was about his 2 PCVs not about what someone else has.[/QUOTE
IMO that was a meaningless reply, only to "show off" what you have, the post was about his 2 PCVs not about what someone else has.[/QUOTE
AMEN brother!
I'll second that AMEN bro! But Hey, some of us need the high post count to give the perception we know something about exhaust scavaging. Since i only run a PVC i'll just STFU.I won't mention how a good operating PVC is really a control vacuum leak. And i won't say how the carb needs to be calibrated for this leak. Won't try to explain how the PVC is designed to seal shut when engine is off/no vac (or backfire) but regulates vac flow at idle/low rpm/hi vac for low flow - then moves larger amounts of airflow at WOT. Can't say then about why the PVC needs to be opened for hi flow at WOT to remove the greater amount of piston blow-by gasses in the crankcase at WOT. Better not mention a flow path is needed from one valve cover breather through the crankcase then back up through the PVC and into the intake. Now i also shouldn't say that breather is/can sometimes just plumbing to aircleaner for a clean air suction.
Won't try to confuse ya Andrew so i'll STFU. :o cardo0
Last edited by cardo0; Oct 30, 2004 at 12:49 PM. Reason: Flow path
