292 Crackcase Breather

Rusted64 · Post by **Rusted64** » July 18, 2011, 10:58 am

Hello All,

Can anyone post or PM me some pictures of their crackcase breather system on their 292 engine please?

It seems that the breather was just vented through a metal pipe near the rear of the engine and I have seen this on a couple engines. My concern is that my manual says that it should be going to a PCV valve and into the intake.

This is from the manual.

"The removal of the crankcase ventilation system from the engine will adversely affect the fuel economy and engine ventilation with resultant shortening of engine life."

I would hate to leave it venting to an open pipe when it really should be going into the intake.

Thanks,

TheOPWK · Post by **TheOPWK** » July 18, 2011, 11:53 am

yeah, thats just the road draft tube coming out of the back there. You can just plumb it to a PCV valve and run it into the hole in the intake (if you have one). If that is not an option, you can get a carb spacer and drill and tap the backside of it and run it into there. I'll try to get a pic of mine when I get home tonight.

Road drafts work fine, but if you have any blow by, you will see it coming out of there at idle. When driving, the air passing under the truck creates a vacuum and pulls it out of the tube.

62galxe · Post by **62galxe** » July 18, 2011, 7:16 pm

Jason if its a short 3/8 metal tube sticking off the side of the piece that screws to the valley pan it goes to the PCV valve. The PCV valve was threaded on 1 end and screwed into the front side of the intake on 2 bbl. remind me this weekend and ill get you a pik of mine.

Rusted64 · Post by **Rusted64** » July 18, 2011, 11:11 pm

TheOPWK wrote:yeah, thats just the road draft tube coming out of the back there. You can just plumb it to a PCV valve and run it into the hole in the intake (if you have one). If that is not an option, you can get a carb spacer and drill and tap the backside of it and run it into there. I'll try to get a pic of mine when I get home tonight.

Road drafts work fine, but if you have any blow by, you will see it coming out of there at idle. When driving, the air passing under the truck creates a vacuum and pulls it out of the tube.

That would be great, I would like to be able to see that.

Rusted64 · Post by **Rusted64** » July 18, 2011, 11:20 pm

62galxe wrote:Jason if its a short 3/8 metal tube sticking off the side of the piece that screws to the valley pan it goes to the PCV valve. The PCV valve was threaded on 1 end and screwed into the front side of the intake on 2 bbl. remind me this weekend and ill get you a pik of mine.

Well....it is a little bigger. its about a 3/4 inch OD or so.

I would like to see any pictures I can, as I think I may have an issue with the PCV being on the intake. I got an A 4 barrel intake and adapter plate from 64ranger and it does not have the threaded port like the old 2 barrel does. I do have an edlbrock carb that has the big vacuum port, but not sure how I will be able to put a PCV on it. Also not sure if any PCV from a parts store would work, or if it has to be the spring loaded type shown in the manual.

Thanks,

Tech · Post by **Tech** » July 19, 2011, 11:58 pm

Most of the modern PCV valve just use gravity instead of a spring so when you make the adapter make sure you mount the valve properly.
The high vacuum at idle should pull up the weight and restrict the flow of fumes.so that it will still idle. Any valve sized for a V-8 should work fine.