Was wondering about the breather setups people with the bigger power cvh's use i.e anything different and how well they cope etc??!! Mine's currently running 240bhp approx and building another bottom end at the moment which along with a turbo swap etc should hopfully see nearer the 300bhp mark and wondering if i should consider a different/better breather setup? I've currently got the standard type of upgrade breather with a -8 oil reurn welded into the sump below the oil line.
Chhers in advance guys,
Dave.

 

I wouldnt have thought that running bigger power will put much more strain on the breather system. If i'm not mistaken the breather system just provides an escape for crank case pressure, the pressure itself is caused predominantly by the pistons on the down stroke so unless you increase the size of your pistons your CC pressure should remain close to normal.

 

I dont return any oil to the sump. Mine is a simple arrangment as it really does not breathe much. I certainly wouldn't return what does come out back to the sump.

 

simple seperator venting to atmo is all u need.

 

mine didnt breathe much at all

i did just vent to atmo, same as mr c

 

Cool thanks for the replies guys, so just run the standard bailey etc type as in both sides of the rocker cover, block, and vent to atmosphere?

 

Yup thats what i do!