Catch can...junk?
#12
Re:Catch can...junk?
I built a catch-can from an empty WD-40 can. I fiberglassed in 3 nipples ( two on top, one on the bottom ), and then painted it like a barbershop pole, but using red and black instead of red and white...
I haven't using it since I haven't built a intake/air filter system for the turbo yet. The catch can needs vaccum, and never boost, which can only be had between the air filter and the turbo's compressor housing/intake.
If you tap into the manifold ( intake ), then you'll get a vaccum, until you hit boost, then you'd actually be forcing presurized air BACK INTO the valve cover/crank case, which is the oppisite of what a PVC/catch-can is designed to do.
I haven't using it since I haven't built a intake/air filter system for the turbo yet. The catch can needs vaccum, and never boost, which can only be had between the air filter and the turbo's compressor housing/intake.
If you tap into the manifold ( intake ), then you'll get a vaccum, until you hit boost, then you'd actually be forcing presurized air BACK INTO the valve cover/crank case, which is the oppisite of what a PVC/catch-can is designed to do.
#17
Re:Catch can...junk?
Originally Posted by green91
No, turn the check valve around the other way, so it will only allow vacuum in, but close under boost
#18
Re:Catch can...junk?
Ok, I'll take the question the next step....what exactly is getting hurt inside the crankcase if I leave the stock PCV setup? I'm running 9psi around town and I have no oil on my cheesy little breather filter...sufice it to say, if I am shortening the life of the motor any more that I have to, I will do it.
#20
Re:Catch can...junk?
Originally Posted by Zeusfire69
Ok, I'll take the question the next step....what exactly is getting hurt inside the crankcase if I leave the stock PCV setup? I'm running 9psi around town and I have no oil on my cheesy little breather filter...sufice it to say, if I am shortening the life of the motor any more that I have to, I will do it.