Thread: 283 pvc question?

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I have flip/floped all over the place trying to decide what engine to put in my S10,,,I have decided to stick with the 283 that I got,more or less free as a part of some 'horse tradin'. My question is concerning the cylinder in the lifter valley(at rear) that has a block hole connection that ties in with another cylinder 'thingy' (sorry,but I don't know what it's called) that mounts beside the distributor,on top rear. Is this the 283's way of providing PVC? Just wondering what it's function is and what to do.Thanks.
Thread should read, 283 pcv question?

Well, that's positive crankcase ventilation too, ventilating crankcase gases out into the atmosphere. What you have is a road draft system, used before everybody got their respective asses up on their shoulders about polluting the atmosphere and began directing crankcase gases into the intake. If you don't have to pass emission tests where you live, the road draft system will work great.

on the other note, a pcv will give just a bit better MPG, because some of the gasses that come out of the engine, are flamable, and do make the engine run more efficently

Can't it be plugged and use the regular type set up? If you take it too the track it might blow by oil on the track which would be bad for somebody.

Thanks guys. chevydrivin,thanks for that thought because the 'thingy' beside the distributor,sorry I don't know what it's called,has an outlet for a hose that I presume could be connected to a valve cover opening.But the valve covers have no holes.But there is a connector in front of the carb,on the intake that it may have connected to,but some things were missing from the motor,including this hookup.It'll be a brackett 'jalopy' so I don't want to oil down National Trails Raceway .I say jalopy,but I'm building it 'right' considering the available cash I have,like Johnny Cash's song I heard the other day," One piece at a time ".

I used a rubber freeze plug on mine to block it off and just ran a pcv to the carb.

You could block it up and run some rocker covers with PCV breather atachments. But for my buck I would keep the sealed covers, they look way cool, and route that breather back into you closed system. As a note, and i see nobody has mentioned this. If you keep the original PCV exit. The one at the back, you MUST provide a source for air to enter the system. In a stock manifold this is by the oil CAP. Don't change your manifold to the one that does not have the filler in the front of it or you will draw a vacuum on the crankcase. I would suggest you look up PCV on this site and get a good idea of the reason why its all there before you start removing too much.
just my 2c
Andy.

Since I am old enough to remember road draft tubes, I called those memory cells up.....

when you looked at the running car from the front, you could see a little "smoke" coming out from underneath and behind the crossmember

the underside never rusted because of the oil film from the tube exit and back to the rear axle

when you pulled the intake, there was a Valdeze sized tar blob at the back of the lifter galley

the horsehair filter in the road draft system was a bear to clean, you could flush it for a week and still get oil coming out of it

it seems that the end of the tube was cut at an angle and always dripped on your forehead when you were under the car

mike in tucson

Originally Posted by robot

Since I am old enough to remember road draft tubes, I called those memory cells up.....

when you looked at the running car from the front, you could see a little "smoke" coming out from underneath and behind the crossmember

the underside never rusted because of the oil film from the tube exit and back to the rear axle

when you pulled the intake, there was a Valdeze sized tar blob at the back of the lifter galley

the horsehair filter in the road draft system was a bear to clean, you could flush it for a week and still get oil coming out of it

it seems that the end of the tube was cut at an angle and always dripped on your forehead when you were under the car

mike in tucson

Thanks for that trip down memory lane Mike

Shevy_not_heme, if you look closely at the diagram Lt1s10 provided for you, you'll see that the same crankcase gases are available in the valve covers, in the oil pan and in the lifter valley. It wouldn't be any big deal to tap into the oil pan just below where it bolts to the block and run a hose up to the intake manifold with a PCV valve in the hose somewhere along the line. Or, drill all the way through the intake manifold and epoxy a pipe in that will run from the lifter valley up to atmosphere, attach a hose/valve and away you go. Don't be shy just because nobody has done it, either of these methods will work.

seems to me we used to clean the oil pump pick up screen and the breather by poring gas on them and burning them.