how do the eco guys enlarge the crank case ventilation system output on the valve cover? just very careful with a drill and add a bulk fitting or what? how did GM do it?
Why would you need to?
Cut it off, and drill a new and larger hole?
lol i never said i needed too, just curious.. as i would like to enlarge it as a safety precaution and add a catch can
some cobalt guys are just tapping there oil caps with bulk fittings and venting that way, but i'd rather enlarge the vent in the valve cover
The hose that goes to the valve cover is the fresh air inlet for the pcv system. Under certain circumstances blowby gasses will escape from this vent.
(Tom) S/C Fire wrote:The hose that goes to the valve cover is the fresh air inlet for the pcv system. Under certain circumstances blowby gasses will escape from this vent.
GM suggests to enlarge it when at high boost levels.. and that is what i want to do
Cut off the old nipple, enlarge the hole and have a new fitting welded on.
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450WHP Turbo Ecotec swap in the works...
thats what i was figuring (see first post) but wasn't sure exactly
Define "High boost".
The GM cars run around 45 psi, right.
I doubt anyone on this site is at or near this level.
your right, but it never says how high of boost in the build book either..
its just a safety precaution, i'd rather do it now than later..
and i only asked here becuase i've known some people to do it, and have yet to see anyone do it on css.net or rlforums.com
does it really matter to you either way?
