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Slobber tube - cheap fix for blowby
04-20-2007, 09:47
Post: #5
Slobber tube - cheap fix for blowby
Hi Greg,

I placed the sump directly under the tubes' original placement. I
just snipped off the bottom 6" and connected the tubes to barbed
nipples that screw into the PVC sump and they seem to dump a good
amount (1-2 qts) of sludge into the sump between oil changes. At most,
they are 15 degrees off vertical and do not seem to have a problem
draining. I did the modification when I bought the coach 3 yrs ago and
have run this way for about 30K miles with no leaks elsewhere. The key
is to keep the breather element on the sump clean with a shot of
brakekleen now and then.

Shane Fedeli
85PT40
Hershey, PA

--- In WanderlodgeForum@yahoogroups.com, "Gregory OConnor"
wrote:
>
> Shane it sounds like a good plan. BUT, I fear that reengineering the
> vertical path of the tubes with a horizontal turn will add the grave
> possibility that crud will buildup and block the process. MikH posted
> a link to an article which describes the Scavanging process on the 2
> cycle DDV92's. The Scavanging is blown out the Slobbertubes.
>
> http://www.yachtsurvey.com/comparing_die...es.htm#TOP
>
> The engineers design engines to operate optimal at a given temp.
> That temp is controlled by a specified thermostat and fan cycle.
> WHen the engine is cold or run cold the tolerances are out of planned
> specs and the crankcase gets internal pressures. If you hold the
> crankcase pressure in it will come out the weakest spot which is
> around the tin pan and weaker gaskets. The other paths will weep oil
> dynamically even when op temp is reached
>
> I correct the drops of oil on my toad with windex and detail spray
>
> GregoryO'Connor
> 94ptRomolandCa
> --- In WanderlodgeForum@yahoogroups.com, "sfedeli3" <sfedeli3@>
> wrote:
> >
> > On my 85PT40, I routed the slobber tubes to a horizontally hung 30"
> > long piece of 4" PVC with end caps and a drain in the bottom. There
> is
> > a breather on the top to allow ventilation. It is usually 1/3 full
> at
> > each oil change- No more drips!
> >
> > Shane Fedeli
> > Hershey, PA
> >
> > --- In WanderlodgeForum@yahoogroups.com, "ac7880"
> wrote:
> > >
> > > On my 94 Bluebird BMC I have one engine vent "slobber tube". The
> > > blowby was ending up on the tow car. On our trip we just
> returend
> > > from, I used a empty 1 gallon distilled water jug (like a 1 gal
> milk
> > > jug), stuffed some steel wool down into it, cut some vent holes
> at
> > > the top, and wired/duct taped it to the slobber tube. End of
> blowby.
> > > A 2 liter soda bottle should work also.
> > >
> > > Just returned home yesterday, and haven't checked the jug yet to
> see
> > > what it collected, but the tow car is clean. Should work for
> > > radiator contamination prevention of blowby.
> > > Dan
> > > 94 BB BMC NM
> > >
> > >
> > >
> > > --- In WanderlodgeForum@yahoogroups.com, "Leroy Eckert"
> > > wrote:
> > > >
> > > > A part of the crankcase ventilation system. I my case one each
> > > tube attached to the left and right cylinder heads near the valve
> > > covers which drop to road level and one large crankcase breather
> tube
> > > which hangs well below the engine pan. In my set up any oil
> slobber
> > > hits the road. Hence, the buzz word "slobber tubes"
> > > >
> > > > Leroy Eckert
> > > > 1990 WB-40"Smoke N Mirrors"
> > > > Niceville, FL
> > > >
> > > > ----- Original Message -----
> > > > From: Scott Forman
> > > > To: WanderlodgeForum@yahoogroups.com
> > > > Sent: Wednesday, April 18, 2007 7:01 PM
> > > > Subject: [WanderlodgeForum] Re: 86 PT38...any pitfalls?
> > > >
> > > >
> > > > What is a "slobber tube"? Never heard that one....
> > > >
> > > > Scott
> > > >
> > > > --- In WanderlodgeForum@yahoogroups.com, Pete Masterson
> > >
> > > > wrote:
> > > > >
> > > > > PTs have a tendency for the radiator to become clogged with
> > > dirt.
> > > > > It's difficult to examine as shrouds and other appliances
> get
> > > in
> > > > the
> > > > > way. The area swept by the fan usually is clear, but the
> > > > surrounding
> > > > > area can be clogged with oily-dirt. (The "slobber tubes"
> feed
> > > hot
> > > > oil
> > > > > vapor that mixes with dirt kicked up by the fan to clog the
> > > > > radiator.) This is a maintenance item (wash out with sudsy,
> > > warm
> > > > > water from time to time) but can become a serious issue if
> it
> > > > causes
> > > > > the engine to overheat.
> > > > >
> > > > > Most of the rest is standard 'bird stuff... Of course the
> > > engine
> > > > can
> > > > > have some considerable differences -- cat 3208 vs DD 6v92
> or
> > > 8v92
> > > > > (depending on year).
> > > > >
> > > > > You won't need a 'swing away' radiator!
> > > > >
> > > > > Pete Masterson
> > > > > '95 Blue Bird Wanderlodge WBDA 42
> > > > > aeonix1@
> > > > > On the road at Johnson City Texas
> > > > >
> > > > >
> > > > >
> > > > > On Apr 18, 2007, at 5:38 PM, Scott Forman wrote:
> > > > >
> > > > > > Are there are common problems on PT's I should look out
> for?
> > > I
> > > > > > have an
> > > > > > FC and know a lot about them, but have zero hands-on
> > > experience
> > > > with a
> > > > > > PT. Anything I should pay special attention to outside of
> the
> > > > > > "normal"
> > > > > > things would be helpful.
> > > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > > [Non-text portions of this message have been removed]
> > > >
> > >
> >
>
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Messages In This Thread
Slobber tube - cheap fix for blowby - ac7880 - 04-20-2007, 03:05
Slobber tube - cheap fix for blowby - sfedeli3 - 04-20-2007, 07:10
Slobber tube - cheap fix for blowby - Gregory OConnor - 04-20-2007, 09:25
Slobber tube - cheap fix for blowby - mbulriss - 04-20-2007, 09:37
Slobber tube - cheap fix for blowby - sfedeli3 - 04-20-2007 09:47
Slobber tube - cheap fix for blowby - Gregory OConnor - 04-20-2007, 12:35
Slobber tube - cheap fix for blowby - Terry Neal - 04-20-2007, 12:37
Slobber tube - cheap fix for blowby - Gregory OConnor - 04-20-2007, 12:39
Slobber tube - cheap fix for blowby - Tom Warner - 04-22-2007, 12:41



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