I have a breather on the valve cover of my turbocharged d16z6. The short ram intake has the little nub on it for where the hose for the pcv valve is supposed to go. i didn't want that sucking unfiltered air into the turbo so i capped it with a rubber vacuum cap for now. but that rubber is quickly dry rotting or something. the heat is making it crack and im afraid its going to crumble and get sucked into the intake...which would be bad. is there anything better to cap this with? another air breather maybe? ...and don't say catch can. no catch can.

 

Doesn't need a breather. I would get a higher temp hose cap if it's that bad.

 

Use a silicone instead of rubber cap or weld it shut.

 

I would recommend running a vaccum hose between the two

 

But that would take all that blow-by and spit it into the turbo which would then turn my intercooler into a glorified oil separator

 

Its a known method of relieving crankcase pressure recommended by numerous veterans on here