haha!!

 

Hah, you're welcome Dave

 

If you ever decide you want a supra you should let me know, I have a bunch to choose from

 

i mean this is what im thinking, of course over time you see the end product, the amount of stuff the catch can has collected and people think OMG all this would have gone through my engine all at once! i have a friend with a genesis coupe, he is always changing his catch can fluid and complaining about "blow by" i mean whatever... there are plenty of high horsepower RELIABLE cars without them.. i just really want to see a no BULL test on these.. I don't think i've ever seen a car blow up bc they didnt have a catch can, or visa versa so i guess im about to google and see what the real deal is here

 

The reason these people are experiencing large amounts of H20 in their catch cans is from the lack of a operating PCV system to remove the condensation in their motor. Every time you start your motor you are adding more moisture to your non PCV'ed engine. After many hot , cold cycles you have what is displayed in their catch cans.
Don

PS. On a daily driven vehicle, I would not recommend operating it with out a pcv system to purge the motor of the moisture.

 

Steven, The pcv system, for smog purposes needs to be a closed system, not vented to the atmosphere. Looking at TDR's offering, it vents to the atmosphere. Ideally, you want the pcv system to prevent pressure in the crank case, while not introducing oil into the intake tract. Regardless of the condition of the engine, some pressure will get by the rings. In boost, cyclinder pressure increases, and so does leakage past the rings, commonly referred to as "blow-by". The term "catch can" is to indicate the purpose of catching the oil, to prevent the oil from entering the intake tract, for two reasons, first to lower oil consumption, and second because oil will lower the octane rating of the fuel, and lean out the a/f mixture, which can cause ping. I have yet to see a properly designed catch can, that will acomplish this, although I'm sure it's possible. To prevent the detrimental effects, the catch can would need to seperate the oil and return it to the crank case. Because of there being two outlets in the pcv system, I would think two catch cans would be necessary, with only one retaining the pcv valve to provide intake vacuum to the system and the other connected to retaining the metered air flow function of the mass airflow sensor. Obviously this becomes somewhat more complicated by the plumbing and more necessary by the increased blow-by of boosted applications. TDR's offering, while seperating the oil, doesn't address returning the oil to the crank case, plus opens the system to the atmosphere, making it not carb legal, and trades oil comsumption into oil waste, by not returning it to the sump. Bob

--- This guy bob seems to have a diff view on the situation

 

You know......adding the PVC back to our can is a good idea, looking at evo9nuub's post. That would help keep the moisture level down in the cans because the air would circulate through the can. It would only require an additional port on the top of the car and since the valve is closed under boost our catch can would keep the oil separated from the intake system. Our system returns the oil to the pan now.

I have been testing a new addition to our catch can's. It's a one way check valve used in the oil return line to the pan. This keeps the excess crank pressure from blowing oil back up the line and out of the breather on top. It's on the Bad Bish now and is working perfectly. It does eliminate the extra vent though to get rid of more crankcase pressure which was one nice thing about our design it had 3 vents instead of just the two typically used on the valve cover. I like the oil not being blown out the breather and still being able to return it to the pan though. These valves are available now for anyone wanting to add it to their can.

 

Any pics DB??

 

Pics of what? Our catch can?

 

I realize I just got a better deal for 2 separate cans then running the DC3 (which was my plan).

 

whatever you do, dont sniff that. i sniffed mine and i got sick for 2 weeks. that ****s very toxic.

 

hahah!

 

Send it to blackstonelabs for us. I haven't run a catch can at all on my evo and been running E85 for over a year. Haven't noticed anything weird aside from one time seeing some milkiness on the oil cap after an oil change.

 

I'll start a fund on here, and gladly send it in

 

You are obviously still running the stock PCV system. The fumes, gaseous material in a engine is quite acidic and is removed by the PCV system. The reason for a catch can is when under boost their is considerably more blow by entering the engine and pressurizing a sealed engine. By running a catch can you add more ports for the pressure to escape and be caught instead of ending up in your intake. If you run a catch can and a PCV system you have the best of both worlds.
Don