i have drilled my cam cover today ready for connecting to a separator.i have drilled it in the back right hand corner as you look from the front of the car 9just at the end of the word cosworth) will the engine be ok just braething from there or will i need to drill a hole on the other side of the cover above the other cam also.

 

Will be fine just the one, unless mental bhp, a lot say this one is not needed/bad idea, some say good.
tabetha

 

As tab says just the 1 needed in cover, Graham goode says its not needed but also many people av it with no probs.
I guess/hope your also breathing from the block as your question sounds like ya only using top cover.
Good luck. steve

 

yeah its also going to be breathing from the block and has the drain back to the sump .i am using the original drain port that the kidney box connected to is that below the oil level does anybody know?