Doug G

I seem to have too much crankcase pressure....blew out the dip stick, oiled down the motor and the track ....

I can only guess the motor needs more time to seat, and need to look for a catch can/breather combo ?

How much will this help ?

snook

iTrader: (1)

Should help, stick another on the tube too. I ordered one for he valley cover too, just gotta mount it

The stuff I used


The elbow for the tube on valve cover

http://www.oreillyauto.com/site/c/de...&keyword=46001
Use either end

small filter like yours (I have the filter off, but the tube is in the picture)
http://www.oreillyauto.com/site/c/de...ankcase+filter

The big one
http://shop.zzperformance.com/store/...-Breather.aspx
I took the filter on it and swapped it for a K&N breather though, it screws into the valve cover of all ls engines

The valley filter

Prorac1

iTrader: (4)

Doug, I run a single 8an line to an allstar performance seperator/breather can. I have had no crankcase pressure issues at all. Eric L

Prorac1

iTrader: (4)

Oh. And what did it run? Eric L

lsxnotch

iTrader: (-1)

Haha...^^^^this..

Doug G

**** poor 11.79 @ 113

Never had this issue on the street and it's seen the limiter too....just needs to show its ugly head at the track

ZONES89RS

iTrader: (25)

Had my stock dipstick come out of the tube on nitrous, but it was planted into the engine tight. So is my braided setups I use now. The extra filter should help plenty if it is that bad id hope.

Doug G

It was the first pass, I was nervous since this was a new combo and first time to the strip in 2 years I panic'd and short shifted 5500 and 6500

newschool72

iTrader: (12)

I wish I could remember the thread I read a while back on PCV on these LS engines. It was on LS1gto of all places. It was a link off the gto forum on LS1tech. Anyway the old guy that wrote it was a wealth of knowledge on the subject. I did mine roughly like he recommended and he claimed that, air in was very important for it to function right.
With a small breather on one valve cover, with a PCV valve in the other, or if its like mine, in the valley cover going to the engine vacuum source, you should be fine. You might get some oil in the intake and in that case, run a can , if its excessive. So far mine is working very well, but I think the valley port might be the reason I don't have any oil in the hose going to the intake.
What is your engine setup ?

3pedals

iTrader: (3)

Don't put a breather on the valley cover, I tried it, spewed oil everywhere. I now have 2 big filters, 1 on each valve cover, and no problems yet.

Doug G

Pics....part numbers ?

I have a single 3/8" line going to the intake from rear DS valve cover

Dipstick itself came out....not the tube. I may mave other issues just too pissed to look at right now. 90* and high humidity isn't helping either

newschool72

iTrader: (12)

Like I said , Doug, If you are pulling air out through a PCV you have to have a fresh air source in , or everything gets in a bind. 3 Pedals sounds like he is running an open system without PCV and that will work. I ran that way on my 406 for a while, but adding a PCV to the back of my carb was the only way my dipstick stayed in. On the 406 I had 4 3" diameter breathers, 2 in each valve cover. It breathed good, to say the least!

nhra686

If you run a vacuum pump, you can keep the oil inside your motor and out of your combestion chambers where it causes detonation and dead motors. If your motor is detonating, the knock sensors will pull timing and slow you down also.

Doug G

Carbed, no sensors.

Looking at a few different filters now.

S10xGN

iTrader: (11)

I've got a pair of filtered breathers on my covers, got them from Jeg's in one of their closeout sales for < $20 each...

3pedals

iTrader: (3)

Doug I have HUGE filters on my valve covers. It is working, engine breathes and does NOT spew oil
Basically I cut the knock sensor tubes off my LQ4 valey cover and welded them to 2 pass side oil fill valve covers. I found 2 filters that fit .

newschool72

iTrader: (12)

Barrett, that's a wicked looking blow through set up! Is it in the car now?

3pedals

iTrader: (3)

Yes, only a couple shakedown passes so far, on pump gas, 5.5psi it went 10.77@131
I'm lookin for mid 9's on 15-16psi

newschool72

iTrader: (12)

Sounds very doable . Trap speeds on 5.5 lbs show low , low 10s potential.

Doug G

Barrett, not too sure I have room for anything that size.

I have an idea or three and just need to mock it up.