Dusty
I have no idea why this motor does this. first off i will say yes there is a baffle properly installed in the bottom of the intake. we have tried 4 different pcv valves the pcv hose goes from the valve and rubber to the nipple on the front of the throttle body (edelbrcok EFI) the Efi diagram shows the hose for the pcv hooking up to this vacume port. and the oil fill tube breather hose is plumbed into the air filter. If i leave this setup hooked up this way when you rev the motor up and let off she sucks massive amounts of oil through the pcv. All my other amcs are setup this way and i have no issue why this one.
Feel free to ask any questions because i am feeling like an idiot right now.
Potential solution...... MC is machining my aluminium valve covers to accept breathers. we are not baffling these because he figures these VC's are tall enough that we probably wont have any issues. so fresh air in through the valve covers and then run a breather hose from the oil fill tube to an inline pcv valve and then into the vacume port on the front of the throttle body. and plug off the rear pcv port. anyone see any issues with this setup?
otherwise i have have even contemplated just piping the oil fill tube breather line straight to the vacume port plugging the pcv. but if i did that that would just create a huge amount of internal suction inside the engine. would keep oil leaks to a minimum. lol
#-o thanks all
#-o
jeepsr4ever
Dustman as soon as you get the VC's with breathers you wont have to worry about those pcv's again. You know.....its just one less thing :?:
KJMac
I don't have a a hose going from the fill tube to the air cleaner! I'm letting the oil blow through the breather and on to the intake :oops: 360 is coming soon!
shfletch
Dustman,
I too am suffering from the same PCV problem and here is what I have done with no success. My 360 is fresh with only 1100 miles with a fairly large comp cam (.520 & .523 lift) built for high rpm running in the sand dunes. During break in, I noticed oil consumption to be around 1qt every 100 miles and the pipes completely black. I have lost the ring seal in several of the cylinders due to oil washing on the walls and am now suffering major blow-bye. Removal of the carburator showed the inside of the torker manifold completely oil soaked. The motor was built with the small pan attached to the manifold but no valley pan gasket. The inside of the pcv hose was completely soaked with oil. I tried several types of catch cans but even running 2 cans one feeding into another slowed down the oil but now when the filter inside the can gets hot with lots of oil soaking on it, the air flow is restricted to the vacume port on the carb and the idle takes a dive on me.
I drilled a hole in the valve cover and tried a baffled gromet with a chevy pcv and still sucked oil through that. I pulled the intake and installed the valley pan (what a pain to fit around the oil line mod) and installed the pcv back in the manifold and ran line straight to the carb. Still sucks oil, so now I am back to setting up the catch cans again to try over. With only 1100 miles on a new engine, I have done nothing but screw with this thing daily and am extremely frustrated also. I have talked to my engine machine shop about it and he has built many 401's with nothing like this ever before.
I also am wondering if anyone else has had this problem and found what the problem is.
giz
if you reverse the flow it will work better the problem is most likley the valley gasket being cut for the oil line. connect the rear (remove pcv valve) to the air cleaner or to a remote breather install a 3/8 barbed fitting in the upper part of the oil fill tube shove about 1/2 of one of those copper scouring pads into the bottom of the oil tube and using a inline pcv valve hook it up to carb
Giz
shfletch
I did not cut the valley pan to fit the oil line, just very carefully formed it to fit over it. I have one of those scouring type pads inside the intake manifold baffle right under the pcv hole and do see what the difference would be by moving the suction to the front.
Dusty
I currently have reversed the PCV system as you have suggested and so far so good waiting on modified valve covers as well
