This is blowing my mind, why is my catch can filling up with oil within two days? This just started to happen about a week ago. I notice a puddle of oil under my car so i pop the hood and there's oil everwhere near the catch can. I check the dip stick and its dry as hell. I add about 4 qts of oil about three days ago and now the same deal.
I have it set up with two hoses coming off teh back of the block and the black box removed and pluged. There's a hose from the valve cover that T's into one of the hoses from the back of the block. Both hoses from the block lead into a catch can. Now what would cause that much pressure to force the oil out of the block and into the catch can?

 

what side is the fitting on the valve cover? if its on the back when you accelerate the oil sloshes to the back

 

it's a stock Valve cover no mods. I just attach a hose on the thing next to the oil cap.

 

what your whp? what size hoses are you using? is the can vented? do you have a drain back?

please provide more detail in your post. you should be using fittings on the valve cover and a drain back to help too.

 

thats why you run a drain back or buy a T1 sized can, most cans are too small to carry the amount of oil pushed out of the crankcase and explode out the filter.

 

or you can just run fittings out of the valve cover and be fine. That always happens when you just try to run fitting of the back of the block.

 

My whp is about 380, vented can and no drain back.

But why would this all of sudden happen? its my DD and i rarely get on it at the most i might o like 8 psi.

 

have you done a compression test yet? if it started all of a sudden you might have broke a ring or ring lan

 

yeah i did it right after i put the 4qts in, it read close to 150psi on all four cylinders. The engine wasnt warm but i dont think that makes a big deal

 

What size lines are you using?

 

i no really sure i would say about 1/2 inch wide

 

hi , dont know why it would just start maybe cracked ringland leading to alot of blowby, but my setup sounds about the same, making 386hp and 2 lines off the back of the block to vented catch can with no drain back, and the one of the rocker cover t'd into the lines.

on the dyno it filled the can and pissed out everywhere. im making a new can , 4 fittings from the valve cover and the 2 block fittings are gonna be for a drain back , and im making it the size of the battery and putting the battery in the rear of car. should fix the problem .

the fittings on the back of the block are near the main oil returns from the head so alot of oil gets blow up them i found .

 

I'll telll you what happened with mine, I'm running a turbo D, I had two fittings off the back of the V/C, no baffling here, the can would fill up after 15mile drive. I then noticed how the top was baffled so I cut off the old fittings welded new ones where the baffling is and now not one drop of oil has passed into the can.
I would plug those block fittings and have -10 or larger fittings welded to your v/c were its baffled.

 

small hoses + horrible placement = oily mess.

foward motion = oil slung to rear of engine + crankcase pressure = oil getting pushed out your hoses.

if you switch to large fittings and large hose, the air traveling the hose will have less speed, carrying less oil with it.

hoses on front/top of engine = less of a reason for oil to get pushed out

 

Hey Flangemastermike can you explain what you ment with this sentence "and the one of the rocker cover t'd into the lines"

 

So what the difference in either having the block vented or the valve cover? this is somthing new to me. I should atlease have the Valve cover vented if i dont have the block?

 

you are trying to vent the block in a major oil drainback hole (the oil that gets in the head, has to go someplace)

if you put the hoses on the front of the valve cover, (well above any oil level in the engine) you are less likely to carry oil with the rushing air..... and again. a larger hose will allow for a larger volume of air to escape @ a lower pressure, thus carrying less oil because of the lower air speed/ lower overall crankcase pressure.

 

oh yes it does, also make sure you open the throttle body all the way and pull ecu fuse. Engine has to be warm.

 

What Dave is telling you is exactly what you want!

There is no difference in venting from the block or head, but you need to from one.

This is how i have mine vented two -10an lines to endyn can

 

Hah^ Wanna Do Mine??? Sorry thread Jack.. Pm Me tho!

 

I dont know if this would be it, but could it be the oil picker uper.

 

the oil picker upper? maybe, doubtful, but its very simple to remove and clean.

wheres ft. campbell anyway?

 

oh i out of the Army now i was in clarksville....im in central IL

 

im so lost on how it just now started to do this...i dont want to just drain it back to the motor if there is somthing major wrong with the engine

 

it's not possible to leak if the catch can is installed upside down?