Hi List, My engine seems to run a bit better with both the rocker and sump breathers temporarily disconnected from the inlet manifold, perhaps because the vapour is lowering the detonation point of the air/fuel charge. So I was thinking of a catch can like Fergy's, but being an environmentally friendly guy, Im going to make an oil/air separator therefore returning the de-oiled vapours to the inlet manifold. The autospeed design below suggests teeing both breathers into one for the separator inlet, and recirculating the outlet into the manifold.
http://www.autospeed.com.au/A_0338/cms/article.html Wouldnt teeing the rocker breather (normally connected to the air filter) and the sump breather into a common inlet for the separator, then connecting the outlet to the inlet manifold in the factory position at the PCV valve possibly allow pressure to build in the sump, given the oil/air separator is a sealed system? My thinking for this is the workshop manual says at high vacuum the PCV valve sucks open to burn the sump vapors, at the same time allowing a small amount of air to be drawn in through the airfilter via the rocker breather. When the PCV valve is shut it says the vapor flow is reversed. So wouldnt teeing these together be a bad thing to do on the engine??? Sorry for the essay :) Any thoughts would be greatly appreciated, Andrew --membersozdat------------------------------------------------------- OZDAT Mailing List Please Note:- Send (un)subscribe requests to [EMAIL PROTECTED] Send submissions to [EMAIL PROTECTED] No unauthorised redistribution of this email http://www.ozdat.com/ozdatonline/index.htm http://www.ozdat.com/ozdatonline/listindex.html http://www.mail-archive.com/[email protected]/ ---------------------------------------------------------------------
