question for you...on a carburated engine, how do you compensate for the vacuum leak that the PCV system induces?

 

It dosen't create a vacuum leak, it is a controlled amount of vacum pulled. Just as the carbuarated cars of the 60's & 70's did, all carbs have low speed idle richness adjustment screws for each barrel. Very simple. If you ever get to look close at a 60's or 70's corvette you will see the PCV valve is located in the the valve cover & the filered fresh air comes from the large curved hose coming off the side of the air cleaner housing directly into the pass side valve cover. On the air cleaner side on the inside you will see a small filter element so no unfiltered air gets into the motor.

 

$69 plus $15 S&H includes all you need. Add $25 for powder coated any color you want & when we have the open house in late May we will do installs free. Oh, an FL residents add 7% sales tax.

 

This is the most reasonably priced....especially for a properly sized unit. Why don't you post pics


DH

 

Powder coated red...this is the latest revision with an integrated PCV valve in the can.

Mag red metallic..

Kit w/optional breather..

installed on an F-body..

Cut-away display..

Maggied GTO showing it mounted to the brake booster..

 

[QUOTE=TLewis4095;1565198488]
Powder coated red...this is the latest revision with an integrated PCV valve in the can.

I assume the flow is thru the top and out the side. Looks like you have no filter element, instead a down tube with multiple small perforations ....interesting.

Do you have anymore cutaways showing the PCV

How come I never saw this during the years of CC debates on C5 Forum ???


DH

 

[QUOTE=Dirty Howie;1565198591]We tried the filter element and it worked good until it became saturated & then it was allowing a small amount of oil to be pulled through. The perforated down tube allows the vapors to disperse as evenly as possible to contact as much of the can surface for the vapors to condense & drop to the botom.

I'll take pics of the cutaway on Monday with the PCV valve.

 

running a '68 Chevelle on the street with 10.5:1, 555 BBC, HR cam....installed a PCV a couple of weeks ago and have been having all kinds of small issues (sucking too much oil through valve cover, idle is strange - 850 rpm hot, in gear...jumps to 1200 in neutral, hot...)

will that can work for me? Have K&N filter on the other valve cover.

thanks

 

This is my issue right now. I do not have a good place to plumb a line from the engine to someplace to get this fresh air. Valve covers are not a good place as oil get sucked up into it. And the intake is bad as that is where the oil gets deposited. Not good.

 

Should work great, but you may need more tweaking on the idle air settings. Did you reset them after adding the PCV?

 

I tap into the intake tubing near your air filter for vac, add an inline PCV valve there (I can make you a nice inline setup that has a clean finished look to it) and for the fresh air source run a 3/8" or larger (the larger the better) line to near the front of the engine compartment and locate it as high as possible with a minibreather attached at that point. Very few issues unless there is an internal issue such as a broken ring-land that is allowing boost/blowby past & pressurizing the crankcase beyond the capacity of the system to hold it. Send me more detailed pics of your intake plumbing...

We once blew a head gasket on one of our Alky drag motors that we run a vac pump on & the steam forced through not only was puching oil out the exit catch can, the steam pushed past the pump bearings stripping all the oil out of them & tearing them up.

 

I was loking at one yesterday after reading your post. Its basic w one
line out of the valley in front and one line going from the cannister to the intake. There is still the line comming out of the passenger side valve cover. Then the pcv valve on the driver side. I have the 2 line
down and out, but I intend to change it out to a catch can.

 

not as much as I should have...I have put a bunch of miles on the car this year with just 2 breathers on it (one on each side) and I had the usual leaks under the car.....put the PCV on drove it a couple of hundred miles, not a drop of oil under the car now....then we got hit with snow, busy at work, et cetera so I have not played with the carb yet....

I will look back at the thread to see if you have info on how to order, if not can you please PM me or post?

thanks

 

Call direct: 941-753-5255 Mon-Friday 9-6 EST or Paypal: Sales@RevXtreme.com & include details on the application.

 

Tracy,

I will call and talk to you.

 

Thanks Tracy, I'll check it out.

 

i'm amazed this keeps coming up so often. however, i'm glad it does and i'm also glad that you shared your info.

for-the-most-part i'll agree with what has been posted, just a couple of items.

it has been my understanding that the ls2 does not have a pcv valve but uses a baffled system in the valley.

the amount of 'flow through' is 'controlled/regulated' via the fresh air inlet.

and, as you stated, not all catch-cans are created equal, it all comes down to the 'element' used to 'capture' (filter the vapors).

i installed a 'barf can' on the inlet side and a 'catch-can' on the outlet side.

i have found that, depending upon the type of element used, even 'slightly modified' (bolt-on) cars will benefit from using a good catch-can, esp. as the mileage increases.

 

Keep the disscusions going.

 

KISS;
All modern cars have blowby where combustion chamber gases get past the rings into the crankcase.

All modern cars have an crankcase vapor recovery system(PCV). All consist of a line that vents the crankcase into the intake manifold AFTER the throttle body AND a second line that supplies "filtered make up air" BEFORE the throttle body to keep the crankcase pressure as close to neutral as possible.

The LS2 and LS3 use a fitting/line on the valley cover to vent vapors to AFTER the throttle body using intake vacuum AND a fitting/line on the passenger side valve cover to BEFORE the throttle body to supply the filtered make up air. Some other cars use a line from a valve cover with a PCV to AFTER the throttle body and another line from the valve cover to BEFORE the throttle body. Same design functon just a different application.

If you have oil on the throttle blade there is something wrong with the make up air side and/or if you have lots oil in the intake manifold there is something wrong with the PCV valve side.

A catch can in either or both lines has to condense the oil vapors to a liquid to make them removable, you are trying to distill the vapors into a liquid.

Catch cans in either location help keep oil out of the combustion chamber and don't violate any polution laws. Venting any of the lines to the atmosphere can cause an Inspection failure since Federal and State laws prohibit venting crankcase fumes to the open air.

 

Good contribution.