Do i need a pcv valve

[91 foxbody]

I have a 351 bored to 358. It has 11:1 compression,ported stage 2 twisted wedge heads,victor Jr intake,holley 850 carb,.588/.612 lift cam. It has adjustable upper and lowers. Moser axles and moser spool. Has all the suspension components for a strait line. Either my oil pan or rear main has a bad leak. I have no pcv valve,do in need one and what is the easiest way to do it. There are no power acc., heat or ac,it has man brakes.

Thanks

 

[vristang]

I take it this car is used primarily for Track duty?

If you don't have a pcv, then you should at least have a couple of breathers on the valve covers...

The first part of this link may help you understand what the intention of the pcv system is...
http://www.freewebs.com/vristang/pcvoilcontrolissues.htm


jason

 

[91 foxbody]

Mostly trackuse and occasional street. It has moroso valve covers with with a oil fill cover on each valve cover. The fill covers seem to be ventilated with a like a filter in the top? The reason i asked about the pcv is because i just blew my rear main. It is a 2 piece and it is leaking pretty bad.

 

[vristang]

The most likely reason for the seal blowing is that there is insufficient ventilation of crankcase pressure.
If the motor is healthy, then the vents on your valve covers are insufficient.
However, it could be that there is excessive blowby.

A compression check will help narrow it down...


A rear main seal doesn't usually 'just fail'