Eliminating the PCV system (long)

[RiceKiller_TSi]

Originally posted by Mike 99GSX
NPT stands for national pipe thread. 1/8 NPT is slightly larger than the threads that are in there right now. What I am suggesting is: go to a harware store and buy a 1/8" NPT tap because aftermarket straight fittings are going to be in this size and pitch because it is a standard. ( You will never find a straight fitting that is the same thread as what the Mitsu PCV valve is). Make your new hole and get a straight fitting. Then go to a Napa or Autozone and get a PCV valve that is 1/8" NPT to match your new hole instead of the Mitsu one. That way you can swap it back in if you have to. I hope this clears it up.

And it does! Thanks alot! Im about to chase some holes and tap em!

 

[racer]

ok #### this,OIL CATCH CAN on N/A isnt working properly.I have brand new instaled valve cover gasket reimforsed with silicon all the way around and brand new dip stick and and the oild is coming out from the stick,from the oil cap and every where from the valve cover gasket.
I cleaned it all,put back PCV valve as it was befor and I have no more oil leaks no where.Ihe only good think about it was that I had way less smoke with the catch can and now the smoke is back again but o well atlist it dont leak oil all over the engine.Under smoke I mean some white-gray smoke when pass over 4000RPM.So If some one is N/A and wana do catch can I recomend DO NOT.I duno how u turbo guys deal with this crap but Im tired of cleaning oil everyday.Also the other thing was that I never got any oil colected INTO the catch can,I wonder why????
Any ideas???

 

[RiceKiller_TSi]

Originally posted by racer
ok #### this,OIL CATCH CAN on N/A isnt working properly.I have brand new instaled valve cover gasket reimforsed with silicon all the way around and brand new dip stick and and the oild is coming out from the stick,from the oil cap and every where from the valve cover gasket.
I cleaned it all,put back PCV valve as it was befor and I have no more oil leaks no where.Ihe only good think about it was that I had way less smoke with the catch can and now the smoke is back again but o well atlist it dont leak oil all over the engine.Under smoke I mean some white-gray smoke when pass over 4000RPM.So If some one is N/A and wana do catch can I recomend DO NOT.I duno how u turbo guys deal with this crap but Im tired of cleaning oil everyday.Also the other thing was that I never got any oil colected INTO the catch can,I wonder why????
Any ideas???

Do a compression test. Sounds like your rings are done dealing.

 

[DSM90AWD]

If you did'nt either gut the PCV or run a straight fitting all the OilVapor/Blowby is prol unable to escape that route.. hence it's looking for an alternate escape.

Also if your catch can isn't vented.. the pressure has no place to escape.

Originally posted by racer
ok #### this,OIL CATCH CAN on N/A isnt working properly.I have brand new instaled valve cover gasket reimforsed with silicon all the way around and brand new dip stick and and the oild is coming out from the stick,from the oil cap and every where from the valve cover gasket.
I cleaned it all,put back PCV valve as it was befor and I have no more oil leaks no where.Ihe only good think about it was that I had way less smoke with the catch can and now the smoke is back again but o well atlist it dont leak oil all over the engine.Under smoke I mean some white-gray smoke when pass over 4000RPM.So If some one is N/A and wana do catch can I recomend DO NOT.I duno how u turbo guys deal with this crap but Im tired of cleaning oil everyday.Also the other thing was that I never got any oil colected INTO the catch can,I wonder why????
Any ideas???

 

[racer]

I have done compresion test and it is good it is 150,155,160,155 and actualy I didn't use catch can I just run strait hose to the botom of the car from both PCV and breater outlets and yea I used strait fiting with twise biger the PCV's hole,so I duno what the problem is?

 

[RiceKiller_TSi]

Originally posted by racer
I have done compresion test and it is good it is 150,155,160,155 and actualy I didn't use catch can I just run strait hose to the botom of the car from both PCV and breater outlets and yea I used strait fiting with twise biger the PCV's hole,so I duno what the problem is?

Compression good huh? And you used a straight fitting for breather and PCV? Thats weird for your vehicle to produce MORE crankcase pressure when externally venting. And you say when you return it to "stock" the oil leaks go away? Completely? But then you get smoke from the tail pipe? If so what color smoke? I can only guess that you may have valve seal problems bro. Is your ride consuming oil?

 

[DSM90AWD]

Originally posted by racer
I didn't use catch can I just run strait hose to the botom of the car from both PCV and breater outlets and yea I used strait fiting with twise biger the PCV's hole,so I duno what the problem is?

Sounds gross.. but take your oil cap and puff on the end of each of the vent hoses to make sure there is no blockages in the lines / outlets.

Another possibility.. on my old car (84 SVO Mustang) the baffle on the underside of the Valve cover collapsed which caused a huge prob with oil consumption / leaks.

 

[L2RTSiAWD]

If you have a turbo car and the PCV is pissing you off I recommend checking out www.krank-vent.com, good reviews from a couple I know with starions and used alot on 3000gt's.

 

[doug]

Originally posted by Mike 99GSX
(You will never find a straight fitting that is the same thread as what the Mitsu PCV valve is).

Actually, there is a straight fitting already close by. On the back of the intake manifold is a hose fitting that will fit right into the PCV valve threads. I don't remember exactly what that fitting is for-- I had an extra intake mani lying around and unscrewed it from that and put it on my car. Works great.

 

[Mike 99GSX]

Originally posted by doug
Actually, there is a straight fitting already close by. On the back of the intake manifold is a hose fitting that will fit right into the PCV valve threads. I don't remember exactly what that fitting is for-- I had an extra intake mani lying around and unscrewed it from that and put it on my car. Works great.

Well I'm guessing you're talking about the vacuum line going to the brake booster. You've still got the same problem. Then you've got to find a plug for the hole in the intake mani threads that you just stole the fitting from and get your vacuum source to the brake booster from somewhere else. If you had an extra intake mani lying around then great. Otherwise, even more work

 

[doug]

What I was implying (should have explained it better-- sorry) was that you can go the dealer or a junkyard or whatever and get that fitting a lot cheaper and easier than cutting a new hole.

 

[racer]

ok,If i blow the hoses and it comes out that there is something blockin ,what should I do?
RiceKiller yea,the oil leaks go away and I have gray smoke when acselerating,it is not alot but there is smoke.U can't see it from driver's seat.U have to stay behind the car to see it.The car is consuming oil like 1 bottle every 1000 miles city driving.it consume less when highway driving.

 

[DSM90AWD]

ok,If i blow the hoses and it comes out that there is something blockin ,what should I do?

Pull the valve cover and find out why. You pay have screwed the fitting in to deep and blocked the vent .

RiceKiller yea,the oil leaks go away and I have gray smoke when acselerating,it is not alot but there is smoke.U can't see it from driver's seat.U have to stay behind the car to see it.The car is consuming oil like 1 bottle every 1000 miles city driving.it consume less when highway driving

That's pretty normal for a Turbo DSM .. but since yours is a NT and you've removed the breather and PCV line... the only other avenues for oil consumption is Head Gasket, Oil Rings and Valve Seals.

I'd do a search on any of these three and will find a ton of info on how to diagnose which it is.

 

[racer]

DSM90AWD I did puff on the end of each of the vent hoses and they are free from any shit so i gess that isnt the reason for oil leaks.
Anyways I DID a lot of tests las night with PCV ON and OFF and I found out that I actualy loss power from removing the PCV valve.I did 3 runs with PCV ON and 3 runs with PCV OFF I can say 100% i have better response with the PCV ON.So for all N/A cars I would recomend NOT to remove PCV valve.As for turbos I duno I gess turbos benefits from all that but N/A from what I see on my car doesn NOT.
DSM90AWD the smoke I was talking about is actualy blue gray colour and I also get like a little cloud when takeing off (from traffic light for example).While siting at idle there is no smoke,it doesnt even smell.
Since my compresion is good,and my head gasket is good too,I gess the valve seals are what is causing the smoke.