GNVYUS 1
Well-Known Member
- Joined
- Dec 15, 2002
I just read a thread where David Buschur ( GN owner also :biggrin: ) ditched the factory PCV on his Evo and ran a catch can setup to the inlet pipe. He gained torque on the dyno with no other mod other than a driveshaft ( loss of rotating mass could have caused gain ).
Ditch PCV and run an open fitting in place to a catch can, catch can goes to inlet pipe ( no breather on catch can ). Use the turbo as a suction while under boost to suck out fumes.
By doing this you eliminate the possibility of the PCV opening while under boost and causing crankcase pressure which loses power and causes the breathers to smoke.
You also gain the suction of the turbo while under boost to help suck out crankcase pressure ( cheap pump ).
While under normal driving conditions you are still sucking out fumes from the crankcase like the PCV, it's only going to the inlet pipe instead of directly to the vacuum block. And since the catch can is there only fumes will get into the inlet pipe, not actual oil droplets etc.
I've suggested something similar before in these types of threads but it was based off of the breathers going to the catch can. I think his idea is even better by going to the PCV hole in the intake and sucking it 100% of the time right from the source.
Watcha think?
I think I'll try it but would like to see what others think and hash out any unforeseen issues. Eliminates any PCV issues and probably gains a touch of power with the best part being it's an evolution to Buicks initial idea.
Ditch PCV and run an open fitting in place to a catch can, catch can goes to inlet pipe ( no breather on catch can ). Use the turbo as a suction while under boost to suck out fumes.
By doing this you eliminate the possibility of the PCV opening while under boost and causing crankcase pressure which loses power and causes the breathers to smoke.
You also gain the suction of the turbo while under boost to help suck out crankcase pressure ( cheap pump ).
While under normal driving conditions you are still sucking out fumes from the crankcase like the PCV, it's only going to the inlet pipe instead of directly to the vacuum block. And since the catch can is there only fumes will get into the inlet pipe, not actual oil droplets etc.
I've suggested something similar before in these types of threads but it was based off of the breathers going to the catch can. I think his idea is even better by going to the PCV hole in the intake and sucking it 100% of the time right from the source.
Watcha think?
I think I'll try it but would like to see what others think and hash out any unforeseen issues. Eliminates any PCV issues and probably gains a touch of power with the best part being it's an evolution to Buicks initial idea.