firehawk618

iTrader: (14)

Help!!!

See sig for build.

After build forgot to modify pcv and after a few good boosts blew oil out rear main.

Replaced rear main, reconfigured pcv to both valve covers y-d together to a catchcan. Catchcan to inlet hat on blower.

Worked fine for weeks.

Hose came off inlet hat and I didn't notice it right away. Now have quite a leak out rear main again. UGH!!!!

What am I doing wrong? There is no oil residue out exhaust so i'm thinking there's nothing wrong with the pistons or rings.

Thanks.

427

iTrader: (3)

If you Y the lines together, you make them one line in the flow ability. Run each line seperate to the catch can and increase the line size if possible.

Kurt

Websy21

iTrader: (34)

What he said!

firehawk618

iTrader: (14)

But honestly how much flow do I need to the catchcan. Is there really going to be that much pressure and if there is then i'd think there's a problem. Am I mistaken?

Thanks.

SuperZ

iTrader: (2)

couldnt u just run breathers?

firehawk618

iTrader: (14)

I thought there is supposed to be some vacuum in the crankcase to keep the fumes out? I'm confused on all this pcv crap tho. If a breather on each valve cover solved it that's what i'll do. Wont that puke oil on the motor tho?

THanks.

427

iTrader: (3)

Your breathers ability to flow air should increase as much as the HP. If you double the HP of the stock engine, you should double the breathers ability for a nice safe set-up.

Kurt

firehawk618

iTrader: (14)

That makes sense. So deleting the Y, running 2 catchcans, then where to go with those....

SuperZ

iTrader: (2)

so is a breather on each valve cover not going to work?

Jontall

A breather on each valve cover works on mine with 12lbs of boost.

Reject

iTrader: (24)

i'm sure with aftermarket valve covers yes?

DanWS6

iTrader: (5)

I put breathers on each line coming form the rear of the valve covers and on the front passenger line I run to catch can and then into the intake. I got tired of oil spraying all under my car due to the sloppy design on the inlet hat. Granted that was before I added a catch can so it probably wouldn't be as bad now.

94m6Z28

what about on stock motors at low boost. do they need a catch can?
breather?
leave it stock?. i just put a new rear main in and i dont want this to happen to me *no offince ment*

cablebandit

iTrader: (37)

dont forget the newly revised oil seal goes in "backwards" compared to the older/original one...it says it on a piece of paper in the seal packaging....just a thought

firehawk618

iTrader: (14)

Thanks I did catch that. The new design even comes with a centering / installation tool. I did look at the seal closely and it is marked which side goes out.