Ulix,
A couple of the disadvantages I see to no breather is under wide open
throttle there is very little vacuum and maximum blowby if the
restrictor in the pcv is too small you will be pressurizing the
crankcase, and two under normal circumstances where there is vacuum in
the crankcase air has to be coming from somewhere like the dipstick tube
if there is no breather with a filter on it this will be unfiltered air.
On new cars this filtering is done by the charcoal evap canister.
Regards,
Peter.
>Date: Tue, 15 Dec 1998 09:17:30 -0800 (PST)
>From: Ulix Goettsch <ulix@u.washington.edu>
>To: Ron Soave <redlotus@spacey.net>
>cc: spridgets@autox.team.net
>Subject: Re: PCV Valve/Drippy 1275
>Reply-To: Ulix Goettsch <ulix@u.washington.edu>
>
>Ron,
>
>what you say makes sense. It would be the best oil leak control. I
tried
>to come up with disadvantages, and could only think possibly more
blowby.
>
>I think I'll try your way if I ever go to a Weber.
>
>Ulix
>
>On Mon, 14 Dec 1998, Ron Soave wrote:
>
>> I re-read what I wrote. Not quite right. My way is a dead-headed
system,
>> not a vacuum. Any pressure build up in the case from blowby, etc.
results
>> in flow. Common on new cars. I have to remember the proper sequence
when
>> I get home: Unwind with beer, then answer challenging e-mail.
>>
>> ----------
>> > From: Ron Soave <redlotus@spacey.net>
>> > To: Ulix Goettsch <ulix@u.washington.edu>
>> > Cc: spridgets@autox.team.net
>> > Subject: Re: PCV Valve/Drippy 1275
>> > Date: Monday, December 14, 1998 4:42 PM
>> >
>> > It doesn't have to be. For the "tightest" oil control you would
plug the
>> > valve cover or do what I did putting the crankcase at a vacuum.
You can
>> > also put a filter on either the valve cover or the timing cover,
putting
>> > the crankcase at essentially atmospheric with some flow thru the
system.
>> I
>> > went for maximum oil control, and figured I'd work my way towards
>> > atmospheric from there.
>> >
>> > ----------
>> > > From: Ulix Goettsch <ulix@u.washington.edu>
>> > > To: Ron Soave <redlotus@spacey.net>
>> > > Cc: Scott & Glenda Meyers <autox@earthlink.net>;
>> spridgets@autox.team.net
>> > > Subject: Re: PCV Valve/Drippy 1275
>> > > Date: Monday, December 14, 1998 12:31 PM
>> > >
>> > > Ron,
>> > >
>> > > isn't the valve cover usually the INLET for the carankcase
ventilation?
>> > > Where is air entering your crancase? A vented oil cap?
>> > >
>> > > Ulix
>> > >
>> > > On Sun, 13 Dec 1998, Ron Soave wrote:
>> > >
>> > > > > For those of us who only 'kinda' paid attention to the other
posts,
>> > would
>> > > > you
>> > > > > mid sharing in some detail how you hooked this up to your
1275?
>> > > >
>> > > > Personally, I routed two hoses, one from the valve cover spigot
and
>> one
>> > > > from the timing cover into a "Y" fitting. The "y" is then
routed
>> into
>> > the
>> > > > valve, which I am using inline in heater hose (it is not an
inline
>> > valve,
>> > > > I'm just using it that way, it has pipe thread on one end, and
a hose
>> > bead
>> > > > on the other, 1/4 inch or 3/8 if memory serves, and it'll have
to
>> serve
>> > > > since I'm too lazy to walk 9 feet to the garage). From the PCV
>> valve,
>> > it's
>> > > > more heater hose into a 1/4" pipe-to-hose adapter fitting (90
angle)
>> > into
>> > > > the intake of my Cannon manifold (no hole provided on the
intake,
>> just
>> > a
>> > > > flat; drill and tap it yourself). I did it this way for max
PCV, and
>> > > > routed it for esthetics. It is very low profile, and I wire
brushed
>> > and
>> > > > clearcoted all the fittings to give a polished look. Actually
on my
>> > car, I
>> > > > was pulling a bit too much vacuum with this valve on throttle
lift,
>> and
>> > was
>> > > > seeing puffs of smoke, never on power or under load, just at
"vacuum"
>> > > > situations. I feared it was guides (although they are new),
but
>> > jetting
>> > > > down the PCV with orifices has worked well.
>> > > >
>> > >
>> > > Ulix
__/__,__
>>
>> >
>> > > ..........................................................
>> (_o____o_)....
>> > > '67
Sprite
>> > >
>>
>
> Ulix __/__,__
>..........................................................
(_o____o_)....
> '67 Sprite
>
>
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