Date: Thu, 22 Apr 2010 19:14:27 -0700
Reply-To: Tobias Gogolin <usertogo@GMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Tobias Gogolin <usertogo@GMAIL.COM>
Subject: Re: Water Cooler System Design Flaw Workaround?
In-Reply-To: <CF3B0AB5-4326-4DDB-A52D-35B7899BAB8B@shaw.ca>
Content-Type: text/plain; charset=ISO-8859-1
I suppose the most important purge point on my '84 is the one in front on
top of the radiator (are there others?). I would have to get a hose nipple
with 90 degrees that fits there or cut back the bracket thats obstructing
above the screw!
I don't know, would be interesting to measure the pressure in the cooling
system!
Maybe a simple over pressure relieve valve could purge but that would be
when its already overheating, and then its not going to have enough water to
work properly either. So maybe better would be some kind of flotation valve
that purges if there is no liquid?
To simply run a hose back to the tail may result in the same problem that
I'm trying to solve which is if water gets into that hose it will probably
air lock!
Today I did another short test drive after purging at a nose down slope and
I still have the same problem that had already disappeared in test drives
last week, what i'm talking about is that a few seconds after starting the
van the light begins to flash in the instrument rises quickly to max.! I
wonder what this is now! Maybe the oil in the coolant is making the level
sensor think, lack of water? Since no water gets into the oil (yet) i'm
still putting of that costly repair of those head gaskets that Scott kindly
has explained about!
And yes I love my Vanagon, its suspension is great and its a very
comfortable car! Just cant wait to convert it to electric power! Lord let it
rain $$$ !
On Thu, Apr 22, 2010 at 5:44 PM, Alistair Bell <albell@shaw.ca> wrote:
> As David says, there is such a thing, or a similar thing in the 21.
> wasserboxer. On top of the thermostat, breather valve which connects
> t stat housing to purge "ring" that runs around engine.
>
> You can run engine with that valve open to be sure of air purge. Its
> not a case of coolant pressure -> atmospheric press, but rather
> higher to lower.
>
>
>
> alistair
>
>
>
>
>
> On 22-Apr-10, at 5:19 PM, Tom Hargrave wrote:
>
> I understand but the Mercedes bleed line is under coolant pressure so it
> stays open all the time and it actually tees into the bleed line that
> comes
> off the radiator.
>
> The two work together to keep the cooling system gas free unless you
> have
> such a head gasket leak that the small diameter tube can't keep up.
> But by
> then you shouldn't be driving the car anyway.
>
> I wonder if the same setup can be installed in a vanagon?
>
> Tom
> www.kegkits.com
>
>
> -----Original Message-----
> From: David Beierl [mailto:dbeierl@gmail.com] On Behalf Of David Beierl
> Sent: Thursday, April 22, 2010 6:49 PM
> To: Tom Hargrave
> Cc: vanagon@GERRY.VANAGON.COM
> Subject: Re: Water Cooler System Design Flaw Workaround?
>
> At 06:49 PM 4/22/2010, Tom Hargrave wrote:
>
>> Mercedes did just this in their 80's V8 SLs. They ran a small purge
>> line from on top of the thermostat line over to the surge tank. The
>> solution works really well.
>>
>
> So does the 2.1l Vanagon setup, except that it has a valve to open it
> while
> bleeding and then close.
>
> Yrs,
> D
>
--
Tobias Gogolin
Tel. Movistar (646) 124 32 82
Tel. Telcel (646) 160 58 99
skype: moontogo
messenger: usertogo@hotmail.com
Blog: http://zeitgeistensenada.blogspot.com/
You develop Sustainable Ranch Technology at
http://tech.groups.yahoo.com/group/SURA-TECH
an Open Source Electric Motor/Alternator at
http://groups.yahoo.com/group/Performance_Axial_Flux
and an Open Source Motor Controller at http://groups.yahoo.com/group/GoBox
