Please supply some more details. Vent gasses from where, to
where? Prevent gas from venting from where, to where? And what is
this "from the block" you mention?

--

Christopher A. Young
You can't shout down a troll.
You have to starve them.
..

"Oren" wrote in message
...
: On Sat, 30 Jun 2007 14:55:09 -0400, "Stormin Mormon"
: wrote:
:
: The crankcase breathers I've seen allow air out of the
crankcase
: when the piston goes "down", or into the crankcase. When the
: piston goes up, the valve closes. This maintains a very slight
: negative pressure, and helps cut down on oil leakage.
:
: Not a pro here, but I've always thought of the breather as the
direct
: method for un-spent/burnt gases to escape. During the intake
air we
: don't want exhaust fumes to enter the head.
:
: A clogged breather can prevent the escape of the gases and not
vent
: the block.
:
:
: --
: Oren
:
: "I don't have anything against work. I just figure, why deprive
somebody who really loves it."