FS: $4,500 Casey's 200 20v

[themagellan]

A clean check valve never hurts… but if you ran your drain line with a lot of incline or length, you shouldn't really have much of an issue.

[WOMBAT]

Ok checked again after an hour and a half of driving and with the throttle open..

168
167
145
160
144

Telling practically the same story. Still need to find someone with leak down testing abilities.

After that hour and a half drive the catch can had 3/4 qt of oil in it.

If I had the space right now I would be pulling the motor.

[Dutchbroracer]

Leak down is king. Until you obtain one, squirt some oil in the two low cylinders and see if they come up to around the other ones.

[chaloux]

Yeah that seems like a lot with your sexy setup. But again, put a drain back and continue to beat the crap out of it IMO

Edit: I even found an old post of Jim's where he said without a drain the catch can will just fill up and blow out. That made me feel better.

[WOMBAT]

I'm concerned with all that blow by in the catch can which looks jet black, thinned out and smells of fuel that I'll end up doing damage to the engine due to shtty oil viscosity if I drain it back.

[chaloux]

Hmm, jet black eh. Don't know what that means. Must of the stuff I would drain would be gross milky white brown, and I thought no way I'm draining that back! But then I read it's moisture and it evaporates out and not to worry about it. When it collects on the can it all comes together when it cools.

[chaloux]

Casey... any progress with the CCV oil issue? I'm really sick of my catch can shooting oil everywhere.

[WOMBAT]

Me too - my current solution is to not drive the car. But in all seriousness, the cool-looking valve cover idea is still filling up the can like a boss. I need to drop some oil in my 2 low cylinders to confirm, but I suspect I have unhappy rings. 123quattro on here and/or motorgeek is running 28psi with stock breather and fills his can less than a 1/3qt between 4000mi changes and no, his can does not drain back to the pan. I think I need to be more diligent in my cylinder condition and ring installation. Would also like to do a leak down test before the snow flies. Otherwise, I'm holding out for when I'm not living on a college campus and have nothing but a gravel parking lot to work in.

I need to pull the motor anyhow for my flywheel issues and rear main seal. It will turn into a huge project once I start since I also need to replace just about every suspension and subframe bushing.

[chaloux]

What do you mean by stock breather? Coming out the block? Dad never had any oil spray issues like you and me even when his leak down was like... 50%+ in all cylinders and he ran stock breather into the 034 pnp catch can kit. Idunno.

[PRY4SNO]

Mr. Anderson is an accomplished vet... I'd say his results outta be taken with a grain of salt. Big differences between whips.

What can you shore up before the big dig? There otta be some points you can fix beforehand... no offence!!!

[WOMBAT]

What do you mean by stock breather? Coming out the block? Dad never had any oil spray issues like you and me even when his leak down was like... 50%+ in all cylinders and he ran stock breather into the 034 pnp catch can kit. Idunno.

Interesting - yea I mean the breather off the block. I wonder if a windage tray would make a big difference, I don't have one.

Mr. Anderson is an accomplished vet... I'd say his results outta be taken with a grain of salt. Big differences between whips.

What can you shore up before the big dig? There otta be some points you can fix beforehand... no offence!!!

None taken! I'm admittedly new to engine building. I would like to try a leakdown test and to put some oil in the cyls to at least give me a verdict on rings. Otherwise I could try installing a windage tray to see if that helps. I suppose there's always the argument for the turbo seal leaking into the drain and causing a lot of blow by but not sure how to vet that out. I don't have any oil seeping from the turbo or smoke out of the exhaust.

[chaloux]

Thanks Casey. Thinking about it more, I think your main problem is the crank case vent into the valve cover. All the oil that you were shooting into the catch can before you're now shooting into the vc. And having the vc vents into the catch can just make it take a little more time to get there. Especially the one near the back of the vc.

I started looking at the stock pcv system and I think that by just hooking a catch can up instead of going into the intake hose, you get to keep a lot of the complexities of the system which is a good thing. There's valves and tees and 90s and a shitload of piping, all which help sort the oil from the vapor.

I'm going to experiment and run a line from my block, around the back of the engine, and over to the passenger side as people suggested. I'm hoping that that long path combined with the incline and uturn (as suggested) is enough to get most of the oil out before the cc.

And then if it's not I'll scrap the block vent and just go off the valve cover. Unless that screws something up by not venting the actual crank case.

[chaloux]

Oh and can't comment on the windage tray. I believe mine has one since it's an AAN.

[loxxrider]

I think the crank case vent is actually fairly important... I can't think of all of the reasoning behind it at the moment though. I have always had my vent line routed around the back of the engine and never had excessive blowby issues. I would have to empty the can every 6 months or so and it was my daily at the time.

[audifreakjim]

You really need two catch cans. One at the outlet of the block and another one in series down the line somewhere. The block port will eject oil at an alarming rate. One can simply can't keep up with it. Hell, 034 installs oil pumps on the catch can drains for I5 cars that run at laguna Seca. There is something about that track that causes what you would think is all of the oil to exit the block port. I thought I blew my motor until found out about this. So I just power washed under my car and carried on without a drop of oil since. Also I am not using 034 catch cans. They are my own homebrew versions made out of Jaz catch cans.


Also I have always drained my catch cans back to the block through the block breather port. 40k miles of this nonsense without an issue.

[chaloux]

So you have two cans, Jim? If you are draining back through the block breather port where are you connecting to for ventilation? I must be confused.

[audifreakjim]

Drain is a 3/8" line going to a nipple on a manifold I built coming out of the block port. I questioned it when I built it bit it has worked great. It's all in MG in my gallery somewhere. I can try and find it later

[PRY4SNO]

Is this even close?



Source:
http://www.motorgeek.com/gallery2.php?g ... cdb9e13e6b

[WOMBAT]

That would be it. That follows the other logic I was working towards with inspiration from glibobbo jim's 07K where he has a tank being used as an air/oil separator from the crank vent to the valve cover; basically in place of this manifold in the linked gallery.

I could try that. I still get down about having 2 cylinders over 20psi away from the compression of the other 3.

[chaloux]

Interesting...

[audifreakjim]

I also have 20 psi differences in compression. My leakdown isn't great either, but the car makes 500 wheel all day long so who cares:)

And if you vent it down by the transmission mounts it doesn't stink.
That is the big can, I have a smaller similar can right at the outlet of the manifold in series to this one.

[2.5TYPE44]

Here is a combination that I did to try to help the sloshing of oil into the block breather. I used a 7A oil pan and combined it with an AAN windage tray. notice the extra "slosh baffle" that the 7A has in it compared to the AAN. Plus, you get a little more oil capacity with that pan.

[WOMBAT]

Great comments guys - Think I'll try another revision before pulling the motor apart!

[yodasfro]

Plus, you get a little more oil capacity with that pan.

There is no difference between the AAN and the 7A/3B oil pan capacity.

[chaloux]

Wut. Yes there is, it has the extra side extension cavity thingy. Or does it only fill up to that point anyway? Iuno, I always thoght mine took more oil