Couple of questions regarding venting the SBC and an oil filler tube source...

Me and Barbarino are gonna work it out shortly. You may have an answer tonight (I hope, lol ).

How is yours vented at present? Does it also have an early intake manifold for adding oil?

 

Nice Terd!!! I actually was looking at the intake that I got for my engine and I might already have the PCV inlet on there. It's a WCVSQ intake which I assume is from the late 60's. I'll have to bring it next week to the shop if you want to take a look and work from that.

 

bought this one....

http://www.jalopyjournal.com/forum/showthread.php?t=388231

 

I should add that the local AdvanceAuto has some chrome valve covers that come with seperate baffles that screw into a bracket inside the valve cover. I tried and tried to get them to sell me the baffles out of the box, but no dice. I figured they could send them back saying they were missing, but again, no dice. I haven't found anywhere that has the baffles for sale by themselves. I guess if it's too hard to fab up a bracket (it shouldn't be) someone could buy the valve covers and keep the baffles and return the covers for a refund. I doubt most clerks would be smart enough to figure that one out.

 

On the bottom of that intake, I see a distributer hole and an oil filler hole but no hole for the pcv. If you're thinking about the hole in the rear on top near the distributer, that looks like it goes into the intake runner. That wouldn't be a good place for a pcv, but a good place for a vacuum source for the tranny or power brake booster or whatever.

 

Hmmm, ok that makes sense. It's coming in the mail this week so I'll see what's up. Until then keep on keeping on and I'll check out what you and Boobie are up to tonight.

 

terd, your plan for a PCV should work fine....i have done that a couple times. the only thing i would suggest is not to epoxy the baffle on . i tried that once with some JB and it fell off inside and i had to pull the intake. with an aluminum intake i then made a baffle out of aluminum and tig welded it on...you should be able to find someone to do this local for cheap , as already suggested. or at least use some small screws (maybe 6-32) and loctite

 

On my "too new 350" with old style non-vented valve covers I used an older Edelbrock manifold that had an oil fill tube in the front with a 60's vented/filtered cap. You can't see the filler neck because I shortened it and it's behind the air cleaner snout but it's just stock Chevy.


I drilled through to the lifter galley on the intake manifold's inboard coil mounting boss, behind the carb. Then tapped it for pipe thread. Using this boss will raise the inlet up away from the floor of the manifold a little.

Installed a 90* fitting in the new hole. (I had to trim 3/8" off the top of the manifold mounting boss as the 90* elbow hit the base of the distributor.


On the underside of the intake where the new hole is, I made a sheet metal pan to cover the hole so oil wouldn't get sucked up. The metal pan was rivited to the bottom of the intake and fit fairly close. It was about 3" square and trimmed to fit the contours.

Used a "Corvette style" screw-in PCV valve at the base of the carb. Make sure your PCV flows the correct direction and make sure it works in the horizontal position. I already had the PCV in my spare plumbing parts so I don't know exactly what it's from, probably a 1960's Chevelle.

I had an old remote oil filter so I plumbed it between the new hole in the intake and the PCV with some copper tubing. I figured if any oil got sucked up, the canister would catch it.

Works great, doesn't blow oil out the vented filler neck and doesn't suck oil into the PCV. Would probably work without the canister as I've opened it and there's been no oil inside.

hope this helps 'ya.

 

great thread...I did the intake thing,3-deuces, the only place i had room was by the dist. found a PCV valve that was threaded..used sae pipe tap and fit great,,, made a sheet metel baffel so tight i did n't know if it would work, tapped small hole, and nut on top..great this is to cool!!!!!!!! wow my new engine sucked oil, maybe quart to 75 miles!!!!!! so i plugged my PCV,no more oil consumption. i do have the dirty front breather. thinking about turning out the PCV, use pipe fittings and moveing the PCV "up" away frome the engine. do you think that would work????

 

Dude cut the barrell off a shotgun and weld it to a cast iron intake. Then stretch a rubber over the opening to keep water out. You'd totally be sticking it to the man. I'll leave it up to you to decide if that's a gay joke.

 

Good stuff here,I'm trying to do the same thing here, only problem is somebody ruined my valve covers, But I'll get another set and hopefully get mine together like y'alls.

 

I've gotta do the same thing, for the exact same reason.... let us know how it works.

I have been contemplating the Offy side mount breathers that I have seen stuck to the side of the vette covers, but I don't really like the looks.

What about running the tapped filler tube with a sealed plug (could use a rubber plug and then put an old style vented cop over the top), and hanging the PCV valve off of the filler tube and using the new hole in the manifold for the vent (intake air)?

 

This is the set up we chose to make. It has worked for me for almost 10 years. Do I have to clean firewall periodically? Yes....but there was N.F......W.. I was cutting into those Valve Covers!...

 

If you are using the aluminum valve covers, why not just put a pair of aluminum breathers on the bottom side/middle and run the corvette filler tube/PCV? I ran this on a nova for years and it worked fine. Plus, the moon breathers looked bitchin. Who cares about value if you are not going to sell the covers separately?

 

Don't mean to hijack your thread.... I hope these questions are relevant.

Did you add a fresh air vent, or are you just using the filler tube cap? This is what I was thinking for the PCV valve, but was thinking it would benefit from a fresh air vent in the rear of the manifold.

I may go that way as last resort

 

LowKat has the right idea. Use a Corvette factory Oil catch can and just drain it through a petcock on the bottom occasionally. Here is a link to the catch can.
http://www.eliteengineeringusa.com/Catch_Can.html

http://www.eliteengineeringusa.com/Catch_Can.html

 

Just welded a bung in the breather tube.

 

http://www.jalopyjournal.com/forum/showthread.php?t=262950&highlight=pcv

 

OK guys, things went well for the install. Wait, no they didn't. Started at 2:00 and finished at 11:00. And that was with a lot of help.

Here's a breakdown of what happened. First I pulled the carb, distributer, intake manifold, and valve covers. Somehow the distributer got spun without getting marked. Oops. Other than that, deconstruction was quick and easy. That's the way it always works for me, putting stuff back together was another story though, lol.

Drilling the intake manifold was easy enough. Boobie (aka BloodyKnuckles) drilled a 1 1/8" hole with a step bit in the rear of the manifold near the distributer. He then bent up a piece of metal for the baffle. He then epoxied the baffle onto the bottom of the intake manifold with some 240 degree epoxy. He was doing this while I was taking everything off the truck. It took a couple of hours for the epoxy to get good and hard. That was the first thing that took longer than expected.

While the epoxy cured, I got everything ready for reassembly. Nothing was really as easy as it should've been on reassembly. The gasket glue I got (Permatex) sucked and didn't stick well. The torque wrench wouldn't get at the four middle bolts due to the runners shape. The distributer spun before we could mark it on disassembly, so there's that. I had already installed the valve covers while waiting for the epoxy to dry, but as it turned out they were in the way when it came time to install the intake manifold so they had to come back off. We finally got everything back together and the distributer was 180 off so that had to come back off. We finally got it running around 10:00 although it needs some more adjustments to get it just right, but it was already late.

I got a tiny bit of coolant weeping out of the first bolt hole on the manifold, so I'm going to pull that bolt and silicone it really well and see if that helps. I sure hope so, lol. I had to use the original filler tube and cap until today when the new one comes in. On the way home, I had some oil coming out of the cap as the filter in the cap had been gone for a while and a little was coming out at the bottom of the filler tube cuz it didn't fit as tight as it should've. I think I had a little coming out around the pcv, but it was too dark to tell if it was that or oil from the distributer coming back off on reassembly. There was a little smoke on the way home from under the hood, but it was probably the oil filler cap and oil from disassembly being burned off hot parts. I'll know more today in the daylight. Pics to follow soon.



I can't give enough thanks to BloodyKnuckles for the help. And thanks also to Justin, Dustin, Jeremy, and Jeffery James for the help and sticking with me long after we should've been finished. You guys are awesome.

 

I also didn't want any breathers on the valve covers. If I'm getting oil coming out after the new filler tube and cap or out of the pcv, I just may try reversing it as you suggested. My thought was to drill a hole in the top of a sealed type filler cap and put the pcv there. I would think the extra vertical distance liquid oil would have to travel should help keep oil in the engine where it belongs and still allow the vapors to escape.

 

No offense, but I just think the corvette covers look like shit with anything on them. It was never about hurting the value.

 

I have skimmed through this thread, but heres a question for ya. I have a 64 283 in my 32. not much room by the road draft tube. currently the guy I got the motor from had it set up with the road draft plugged and a late model intake and valve cover pcv setup. I want to run the early non vented valve covers with my 3x2 setup that has an intake filler tube. Is my best option putting the oem PCV setup in place of the road draft and using a vented filler cap?? I really don't want to cut up my 32 firewall, so I may have to fabricate something a little lower to clear.

 

I assumed that was understood - the back of the early blocks was vented - sort of a road draft tube kinda deal.

 

I just used a valve cover PCV gromet and glued it into the road draft hole. A 90* PCV valve should let the hose hug the manifold pretty tightly.

 

Glad you have a solution in hand. In the future if the RTV is not sticking, it's a sign your surfaces have a tiny oil film and need more cleaning.

What's this 240 degree epoxy stuff used to glue the baffle on? Tell us more

 

Sorry I misunderstood, my block is not vented.

 

Interesting stuff

 

what did you glue it in with??

 

It wasn't the RTV that didn't stick, it was the gasket adhesive. The stuff you spray on a gasket to hold it in place until you get the two surfaces mated.

I bought some two part epoxy to glue the baffle on. After we got into it and started thinking out loud, we noticed it had a temp rating of 180 degrees. Justin at the shop gave us some epoxy rated at 240 degrees, but I didn't catch the name. BloodyKnuckles was using the adhesive while I was taking everything apart. All I know is that it's grey like JB Weld, but it's not JB Weld. I'll find out though.



Stay tuned for photos. I've got to run to the parts place to get some hose and clean up my vacuum lines and then I'll add some photos.

 

i hope the stuff holds up with the heat and oil. i still think you should have welded or used some small screws and loctite to hold it on