Crank case ventilation setup

[Jimvr4]

I need to check this as well. Pretty sure I had some leaking from the oil cap. I have pushed to 18-20 psi at times.

[green-lantern]

I have not noticed any smoke just oil leaking from the oil filler cap so far.

The krank vents sold by 3SX seems to have small openings on the large valve: Krank Vents SystemÂ*-Â*Mitsubishi 3000GTÂ*/Â*Dodge Stealth Parts

I've been unable to find the krank vent kit pictured at Stealth316 but I guess this version would work if I mount the valve with the small openings on the front valve cover and the one with the big openings on the rear one: The MINI kit (or CCVS) [MINI CCVS] - $110.00 : ET-Performance & Racing Products ...the only problem is that ET performance doesn't ship to Sweden :BangHead

I sent an e-mail to ET performance but I've heard anything from them so far.

Also, I wouldn't worry too much yet. A lot of these cars leak from the cap. I've seen plenty of NA's do it.

[DrGonzo]

Also, I wouldn't worry too much yet. A lot of these cars leak from the cap. I've seen plenty of NA's do it.

Yeah, Especially the stock oil cap. Mine would leak from time to time running 14 psi on 9b's. I swapped it out with one of those aluminum ones you can find on eBay. I bent the inside lock tabs on the cao just slightly for a better seal and I haven't really seen the issue occur since. I would start with checking your oil cap/seal and look into an aftermarket one if you don't have one already. might just be a simple seal issue on your current oil caps.

[Unlogic]

The ones pictured in there are the small ones. Try and contact matt (DR)

I have an idea I've been working on since I talked to Adam in the other thread. It won't be ready for a week or two though.

The ones pictured on Dynamic Racing website seems to match those on Stealth316,. I'm going to send him an e-mail and see if he has any in stock:

Krank Vents

[green-lantern]

Yeah, Especially the stock oil cap. Mine would leak from time to time running 14 psi on 9b's. I swapped it out with one of those aluminum ones you can find on eBay. I bent the inside lock tabs on the cao just slightly for a better seal and I haven't really seen the issue occur since. I would start with checking your oil cap/seal and look into an aftermarket one if you don't have one already. might just be a simple seal issue on your current oil caps.

This, please don't run out and buy Krank Vents. Put an extra gasket around the oil cap first.

Krank Vents pretty much suck

[TurboSinceBirth]

Something to add to the discussion from the other thread.

See the large vent in the top pic? Look how small the openings are in it compared to the one in the bottom pic.......yeah I wouldn't use the one on top. Probably the one TSB had issues out of.

Unlogic, are you starting to smoke under boost? You could replace the stock vent before doing anything else.

I personally ran the big one in the top pic. That gave me too much vacuum which blew out my dipstick at 16 psi. Throwing it out and running just the small one worked great to 32 psi.

The second pic looks like the set that was ran on a friend's VR-4. I remember the big krank vent barbs being much longer than mine. The big krank vent caused a 250 rpm drop at idle and also lowered the oil pressure 9 psi. You could barely get the oil cap off because it was sucking that much vacuum about -24 in-hg. This was also used in conjunction with a catch can. Ditching the big krank vent yet again made the car run normal and not leak oil out of the cap or blow the dipstick at pump gas levels on TD04s.

I would just run an upgraded check valve in place of the OEM PCV valve. You can use a brake booster check valve or something from McMaster Carr. McMaster-Carr Something like that with fittings or barbs.

[green-lantern]

I would just run an upgraded check valve in place of the OEM PCV valve. You can use a brake booster check valve or something from McMaster Carr. McMaster-Carr Something like that with fittings or barbs.

or run it with the stock valve. Like somebody said in the other thread if the valve flows too much it can suck oil into the intake manifold.

[thor'svr4]

I have not noticed any smoke just oil leaking from the oil filler cap so far.

The krank vents sold by 3SX seems to have small openings on the large valve: Krank Vents SystemÂ*-Â*Mitsubishi 3000GTÂ*/Â*Dodge Stealth Parts

I've been unable to find the krank vent kit pictured at Stealth316 but I guess this version would work if I mount the valve with the small openings on the front valve cover and the one with the big openings on the rear one: The MINI kit (or CCVS) [MINI CCVS] - $110.00 : ET-Performance & Racing Products ...the only problem is that ET performance doesn't ship to Sweden

I sent an e-mail to ET performance but I haven't heard anything from them so far.

I have a brand new mini CCVS kit from ET-Performance... if your willing to pay $55 + shipping its yours

And im not sure why there is some crank vent hate here, ive been running them without issue.

[Unlogic]

I wish that I had seen that post a bit earlier cause I just ordered the mini krank vents after being unable to find any metal valves locally. All local shops only carried flimsy plastic ones...

[TurboSinceBirth]

or run it with the stock valve. Like somebody said in the other thread if the valve flows too much it can suck oil into the intake manifold.

I guess since the stock valve is going to bleed air it wouldn't matter. I would just replace the stock one with a barb if you were going to run a beefier check valve.