reno808

thanks rolex

RolexNJ

All these postings that I did on here, and the information from David Floyd should give you and/or anyone else valuable information on this catch can approach. Like I said, if it's track, maybe you don't care, but for the street, I know a lot of people that hate having it vent into the atmosphere for all the reasons I said.

reno808

Rolex were did you route the lines. your absolutly right!

RolexNJ

Look at the pic I posted.

reno808

they go behind the intake manifold. but to were? aos??

fast951

Doug, a proper catch can will have internal baffles to catch the oil. On your car, you must route the catch can back into the J-pipe. The factory crankcase requires a vacuum.. No vacuum, you get excessive crankcase pressure, your turbo will not drain properly, eventually it'll flood and your engine will smoke.
If you have enough blowby to need or if you fill the catchcan, something is wrong with your engine.

dougoh

john,

what i am having is oil coming out the exhaust under heavy boost...do you think this could be from blowby or like you said somthing wrong with the engine?

RolexNJ

Oh God now. Rings?

TRP951

Do you have a catchcan on or a breather tank? Also if you do is it routed back into the intake system rught before the turbo? Cause if its not like john said it will flood your turbo and spew oil into the exhaust system..

dougoh

i hope not and i havent gotten the can yet to hook it up

fast951

Doug,

What do you mean you get "oil" do you mean blue smoke or actual oil?

Any time a turbo engine has oil problem, you have to narrow it down to few areas (not in any order):

- Head (bad guides, bad seals smoke at startup). Problem on the exh. side is a pain to chase down.
- Rings and/or cylinder walls. Leakdown test is a good start, but this will not show a bad oil scraper.
- Turbo - bad unit and/or not draining properly.

Once yu figure out which are is causing the problem, you can dig in deeper.

- Do you have any oil in the intercooler?
- Any smoke under high engine vacuum

You want to hone in on the symptoms, it will make it easier to locate the cause of the problem.

dougoh

okay john i will do some investigating ...thanks for giving me some things to get started with...just to let you know the head was freshened up when i put the motor in...oh and from what i saw on my brothers 993 winshield as he was trying to keep up with me at the track...it was oil coming from the exhaust

markl951

Any updates to this thread dougoh?

KuHL 951

Call me Po' Boy Racing but I went the Home Depot catch can route. Bought a $10 Campbell-Hausfield water/oil separator (MP5138) for an air compressor. It has a small 6-oz clear bowl, O-ring, and a Shreader valve with cap to drain it. I bought two air hose couplings that matched the hose ID. I had an issue with blowby and oil in my throttle body and ICV on the BMW. So far it has collected a couple ounces of moisture and oil in 3 weeks of daily driving. Take a paper towel, push the valve and it all drains out. The entire intake is now drier than a Texas popcorn fart. Less than $15 bucks but it does lack the bling of all that shiny looking stuff.

Page 4: http://www.campbellhausfeld.net/wcss...ccessories.pdf

ryanm6100