Today's Message Index:
----------------------
1. 04:34 AM - Re: Re: RV10-List: IO-540 crankcase breather (Dale Ensing)
2. 06:10 AM - Re: Re: RV10-List: IO-540 crankcase breather (FLYaDIVE)
3. 07:39 AM - Re: Re: RV10-List: IO-540 crankcase breather (Tim Andres)
4. 09:22 AM - Re: Re: RV10-List: IO-540 crankcase breather (FLYaDIVE)
Message 1
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| Subject: | Re: RE: RV10-List: IO-540 crankcase breather |
Barry,
Without intake pressure (vacuum) as part of the equation with your PCV valve
installation, isn't the valve just acting as a restrictor in the crank case
breather line.
Dale Ensing
On Jul 1, 2012, at 6:10 PM, FLYaDIVE <flyadive@gmail.com> wrote:
> Guys:
>
> Since we are talking experimental here are a few tricks:
>
> 1 - The size of the breather hole is HUGE and there is very little crankca
se pressure, because of it. You can easily install a reducer and use a smal
ler diameter tube. This will also reduce your weight and give you a smidgen
more room under the cowl.
> 2 - ADD to the breather system a simple automotive PVC Valve. Clean it at
ever yearly inspection and you will be amazed at home much cleaner your bel
ly is AND how much less oil you pump overboard. AND for all you Green'y-Sti
ck'm Caps/Tree Huggers - This is a simple Green Thing to do. You want a PVC
Valve designed for hose IN & hose OUT and you mount it Vertically. It is ma
rked in & out.
> 3 - If you have the tube exit the cowling make sure it is ONLY 1" sticking
out into the air stream and it is STRAIGHT DOWN. You do NOT want to create
a low pressure at the end of the tube. It will ONLY suck out more oil.
> 4 - With the hose coming off the engine direct it UP as high as possible b
efore making the smooth turn and going down. You should also use Trick 1, 2
& 3 from above as well.
> 5 - Now, this one I have not tried: Put a 360 deg loop/pigtail in the hose
. This I heard of but I don't like since there is the possibility of trappi
ng water and freezing in the winter. Note: The engine compartment will war
m up enough to melt the ice, but how high is the crank case pressure getting
before the ice melts? If you live in the no-freeze zone then not an issue.
>
> Barry
>
>
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Message 2
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| Subject: | Re: RE: RV10-List: IO-540 crankcase breather |
Dale:
I am not sure what you mean by "intake pressure (vacuum)"? *Crankcase
Pressure* is produced by every stroke of the piston, there is also a small
amount of pressure generated by heat and of course by blow-by if there is
any. The pressure and oil is pumped overboard via the breather tube. The
PVC Valve, as you say IS a restrictor. It is nothing more than a tube
with a check-valve that is regulated by a low force spring. It maintains a
very small amount of pressure inside the engine causing the oil to be
dripped back, as apposed to being freely (without any restriction) pumped
overboard. The seal that the check-valve makes is a poor one, it is
NOT designed to be leak tight. The item is very simple and was one of the
first emission control devices used on cars way back, I think in the late
'60's or early '70's.
Yes, Grasshopper, I even remember Oil Air Filters :-)
Barry
On Tue, Jul 3, 2012 at 7:31 AM, Dale Ensing <densing@carolina.rr.com> wrote:
> Barry,
> Without intake pressure (vacuum) as part of the equation with your PCV
> valve installation, isn't the valve just acting as a restrictor in the
> crank case breather line.
>
> Dale Ensing
>
> On Jul 1, 2012, at 6:10 PM, FLYaDIVE <flyadive@gmail.com> wrote:
>
> Guys:
>
> Since we are talking experimental here are a few tricks:
>
> 1 - The size of the breather hole is HUGE and there is very little
> crankcase pressure, because of it. You can easily install a reducer and
> use a smaller diameter tube. This will also reduce your weight and give
> you a smidgen more room under the cowl.
> 2 - ADD to the breather system a simple automotive PVC Valve. Clean it at
> ever yearly inspection and you will be amazed at home much cleaner your
> belly is AND how much less oil you pump overboard. AND for all you
> Green'y-Stick'm Caps/Tree Huggers - This is a simple Green Thing to do.
> You want a PVC Valve designed for hose IN & hose OUT and you mount it
> Vertically. It is marked in & out.
> 3 - If you have the tube exit the cowling make sure it is ONLY 1" sticking
> out into the air stream and it is STRAIGHT DOWN. You do NOT want to create
> a low pressure at the end of the tube. It will ONLY suck out more oil.
> 4 - With the hose coming off the engine direct it UP as high
> as possible before making the smooth turn and going down. You should also
> use Trick 1, 2 & 3 from above as well.
> 5 - Now, this one I have not tried: Put a 360 deg loop/pigtail in the
> hose. This I heard of but I don't like since there is the possibility of
> trapping water and freezing in the winter. Note: The engine compartment
> will warm up enough to melt the ice, but how high is the crank case
> pressure getting before the ice melts? If you live in the no-freeze zone
> then not an issue.
>
> Barry
>
> *
>
> *
>
> *
>
> *
>
>
Message 3
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| Subject: | Re: RE: RV10-List: IO-540 crankcase breather |
Here's a link to related discussion.
http://www.vansairforce.com/community/showthread.php?t=87347&highlight=S
eparator
Tim
Sent from my iPad
>
Message 4
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| Subject: | Re: RE: RV10-List: IO-540 crankcase breather |
Thanks for the link Tim.
But, after reading it and what the welding of the fitting is suppose to do
for HP... All I can think of is: I have a bridge in Brooklyn that I can
sell you real cheap!
BUT! I just had an idea!!! How about connecting the Breather Tube line to
a welded fitting on the exhaust pipe - At of course a 30 or 45 Deg down
angle.
You would: Reduce the crankcase pressure - Burn up all your oil residue -
Keep the belly clean - AND - AND - wait for it... AND make a cool smoke
trail so all the ground pounders will think you are going to do aerobatics.
It reminds me of another farce that was dumped, whoops EXHAUSTED on the
building public:- Weld on a Venture Exhaust Tube on the end of your exhaust
and that way you would get an increase in the exhaust gas velocity which
will act like a Pulse Jet Engine and PUSH you along. Of course it is like
claiming HP increase that can not be measures. But, in this case I'm sure
the restriction of exhaust gas was felt. Felt by ONLY those willing to
admit it. And definitively felt in the wallet.
Any takers on the Bridge - - Anyone?
Barry
On Tue, Jul 3, 2012 at 10:35 AM, Tim Andres <tim2542@sbcglobal.net> wrote:
> Here's a link to related discussion.
>
> http://www.vansairforce.com/community/showthread.php?t=87347&highlight=Separator
> Tim
>
> Sent from my iPad
>
> **
>
> *
>
> *
>
>
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