i got a easy ?? ok back in the day when i built my first car i ran a catch can but only off the stock valve cover hole and the black boxs with no pcv valve and when ever i empty it all i got was water type stuff no oil now my ?? is you guys running a drain back your just draining that stuff back into the motor??? wouldnt that hurt the motor ??

Thanks,
Eric@DMTune.net

 

no one knows

 

i would think so i've always empty mine out after i hit it. i've always wondered why they make a return on the catch cans?

 

it almost sounds like condensation... maybe from all the pressure?

 

you can easily make a return catch can and no it want hurt the motor its condensation

 

ya but the condensation turns into water and water and oil dont mix i just put a ball valve on mine and im going to just drain it my self. but i made mine with a saftey so say im making a run down the track and for some reason this run it wants to push alot of oil well i made it so it wont return it to the motor unless it spits 2 qt into the catch can and then it will start to put it back in the motor ill have pics up when its back from the powder coater

 

if it in your catch can i can promise you its all ready in your motor. on high hp motor the catch cans allow the blown by oil to drain back in the block. there is really nothing there to prevent any condensation from entering back into the block.

 

mine had a return with a valve on it & it T backed in where the turbo return went in. but in theory if u set it up right u shouldent get much oil in it.
used to fill it every pass then went with 10an lines & i could make 8 passes before it even read on my scale

 

i feel the same way which is why i have a gallon sized catch can that i drain whenever i feel like, i've seen the watery crap drain out and why it may not be harmful, its almost like one of those situations where people say...."its a headgasket, why reuse it when its that cheap of insurance"

Well, its just **** your motor didn't want in the first place lol, so why REUSE IT.

 

blow by has alot to do with how your motor is set up as you all ready know. if you really concerned with this moisture getting back in your motor get a moroso catch with the petcock on the bottom.

 

man i fill the same way thats why i put a ball valve on mine to drain it after a few passes and then check the oil and fill when needed. and the condensation on a factory car is sucked back though the intake and burned witch turns into steam and goes out the tail pipe not back into the oil pan but dont get me wrong theres people making big HP with it but i just like to sleep at night know that theres no water in my oil pan messing up my 3K bottom end. ill have pics of mine when its back from coating

 

These tend to over flow a lot more then the large ones, specially if you have any sort of blow by.

 

yeah alot of of the high hp motors will put 2 moroso cans full of oil into a catch can lol

 

I've noticed now that I heat the oil system in my motor I see a lot less condensation in the catch can. On a side note I leave the oil heater plugged in almost all the time now.

 

Well i got the catch can back from the powder coater thought i would give an update

 

I have one question are the fitting in the valve cover suppose above or below the baffling?

 

above, if below you have to weld a baffle to the back of the fitting

 

What ?? lolol

 

I have a sumped can that drains back, I figure if it came out of the motor, it'l go back in. Its nice to have a maintenance free catch can. I never seen anything more than oil residue in it, never water or anything foreign.

w/o filters


w filters

 

i was asking because if you out 4 fittings two are half in the baffling and two arent.