Crank case ventilation setup

[Unlogic]

Since I started upping the boost on my car (currently running a maximum of 18 psi) I've noticed that the stock crank case ventilation doesn't seem to up to the task anymore judging by the increased amount of oil leaking from my oil fill cap.

I've read the various thread on this subject over the years and there is a lot of talk of various methods for improving the stock setup.

Those of you which are running more than stock boost, which crank case ventilation setup are you running and how is it working?

Given how late I am to the 3/S tuning game I figured there must already be at least a few true and tested solutions to this problem.

The PCV valve on the front valve cover in the stock setup scares me a bit. If that valve sticks open at full boost the results cannot be good...

[DrGonzo]

I know the first step is usually move to the krank vet setup. It will hold better at higher than stock boost levels which is most likely where you are getting the pressure. If that doesn't help I would guess you have ring issues causing the pressure in which a leak-down test would be needed to confirm.

[FeaRpb]

There was just a decent discussion on krank vents in my build thread.

There was a bunch of mixed thoughts and experiences with them. But in the end, I will be running the krank vents as I intended. If curious on the details, check out the last 2 or so pages in my build thread, the discussion was pretty good.

[green-lantern]

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.

[DrGonzo]

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.

For those that can't se the second image, it's the second image on this page. Jeff's site blocks image access sometimes so some will see it others will not. Once you go to his page it should show from then on.

Stealth 316 - ET Performance Karnk Vent Turbo Kit

[Unlogic]

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

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.

[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.

[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

[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.