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| PCV valve installation https://slantsix.org/forum/viewtopic.php?t=40610 |
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| Author: | Eddie [ Sun Jun 13, 2010 9:24 am ] |
| Post subject: | PCV valve installation |
Hey everybody. This is my first post here... just joined today. So i figured as an introduction I'd see if you guys can help me out solving this mystery. Thanks in advance for your help. I recently picked up a 75 Scamp with a 225 under the hood. I was told buy the seller that the engine was out of 1979 dodge. It's a super six with a Carter BBD carb. The vehicle has its fair share of "redneck" repairs. Twisty-ties on the carb linkage, vacuum lines capped off etc, etc. I'm in the process of fixing all these "repairs", and am planning on a rebuild and head milling to get some more "ummff" out of the engine. I was tinkering around the other day and noticed the engine has no PCV valve. The engine oil fill tube and the hole for the PCV breather both a chrome breathers inserted in them. The PCV hose from the carb is plugged with a hex bolt. I looked in my Chrysler shop manual and saw the diagrams that show the hose routing a valve location. The diagrams show the PCV valve installed in the mid section valve cover. What puzzles me is my valve cover has no hole in this area, only the oil fill standpipe in the front section of the valve cover and a ventalation hole on the opposite end of the valve cover. If i invest the money to have the engine rebuilt, I like to have a functioning PCV system to keep the crankcase clean and properly vented. So whats the story here...is it some sort of poorly designed aftermarket valve cover, or a really old valve cover, or am i just misreading these diagrams in my manual? Thanks, looking forward to reading your replies. P.S The valve cover is red and the engine block is blue if that tells you anything. |
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| Author: | 1974duster kev [ Sun Jun 13, 2010 3:53 pm ] |
| Post subject: | |
i doubt the location would matter as long as you have a check valve (pcv valve) popped into the valve cover with a nice vac line on it. my pcv is towards the front of the valve cover if that helps hooked up to full manifold vac on the bottom of my carb. you can probably see in the picture below pcv front behind the oil fill cap Kev |
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| Author: | rustyfords [ Sun Jun 13, 2010 9:03 pm ] |
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Pull the valve cover off and look for the PCV baffle. It'll be a flat piece of metal that shields the PCV hole from oil getting splashed directly into it. The hole that has the baffle originally had a PCV valve in it. You definitely need to run a PCV valve and vent that engine. I know that some modern engines do some funky things with ventilation and ventilate through non-valve cover locations, but as far as I know, the slants vent through a Positive Crankcase Ventilation (PCV) valve in the valve cover. |
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| Author: | walpolla [ Sun Jun 13, 2010 10:45 pm ] |
| Post subject: | |
Eddie,does your valve cover look like THIS one? As you can see,the PCV is connected to the rear hole. A rubber grommet is inserted into the hole first,then the valve into that. You already know where the hose attaches to the carb,so you are set. BTW,welcome to the board. regards,Rod 
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| Author: | Eddie [ Mon Jun 14, 2010 1:54 pm ] |
| Post subject: | |
Yep thats what my valve cover looks like. thanks rod. |
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