Date: Tue, 23 Oct 2007 19:16:07 -0400
Reply-To: Dennis Haynes <d23haynes57@HOTMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Dennis Haynes <d23haynes57@HOTMAIL.COM>
Subject: Re: Home Made version of "the easy-bleed" for de-airing your
van's rad.
In-Reply-To: <471E78A0.3020207@gmail.com>
Content-Type: text/plain; charset="us-ascii"
The outer coolant pipe feeds coolant to the radiator. It fills from the
bottom up. There is a baffle which brings the coolant almost to the top,
near the bleeder where it can flow over and gravity helps it to the return
hose. Yes it flows backwards from conventional systems. The reason you can
not have too much air is that the pump has to do a push-pull thing to get
the coolant flowing. One problem that can happen with the radiator is that
it can crack internally. This will allow coolant to enter and leave
without actually flowing through. Another headache.
Dennis
-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
Michael Elliott
Sent: Tuesday, October 23, 2007 6:42 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Re: Home Made version of "the easy-bleed" for de-airing your
van's rad.
It's unclear to me how the coolant flows through the radiator in a 1.9l.
The drawing on p. 19.10 in Bentley's kinda suggests that coolant flows
into the top of the radiator and out the bottom. The drawing on p. 19.12
is less-clear to my uneducated eyeballs.
--
Mike "Rocket J Squirrel" Elliott
71 Type 2: the Wonderbus
84 Westfalia: Mellow Yellow ("The Electrical Banana")
74 Utility Trailer. Ladybug Trailer, Inc., San Juan Capistrano
KG6RCR
On 10/23/2007 3:22 PM Jake de Villiers wrote:
> Its also one of the fastest moving sectors Mike, so any air will be
> moved along pretty quickly. That water pump is very efficient. :)
>
> The rad bleeder's a good spot to check for air after driving, as someone
> else mentioned, but otherwise............
>
> On 10/23/07, * Michael Elliott* <camping.elliott@gmail.com
> <mailto:camping.elliott@gmail.com>> wrote:
>
> On 10/21/2007 11:00 AM Geza Polony wrote:
>
> > Funny, I've never had any need to bleed the system, even after
> doing coolant
> > flushes, changing water pumps, etc. It just seems like you fill
> it up, drive
> > it around a bit, put more in if necessary, and that's it. Is
> there something
> > I'm missing?
> >
>
> This is a good question. Renegade air bits will accumulate at the
top of
> the radiator, it being the highest point of the system, yes no? If a
> liter
> of air hangs out up there, will it affect cooling? Maybe it expands
more
> than the coolant when hot and forces more coolant into the coolant
> recovery tank* than would otherwise go there?
>
> ===
> * See Jim? I'm teachable!
>
>
> --
> Mike "Rocket J Squirrel" Elliott
> 71 Type 2: the Wonderbus
> 84 Westfalia: Mellow Yellow ("The Electrical Banana")
> 74 Utility Trailer. Ladybug Trailer, Inc., San Juan Capistrano
> KG6RCR
>
>
>
>
> --
> Jake
> 1984 Vanagon GL
> 1986 Westy Weekender "Dixie"
> www.crescentbeachguitar.com <http://www.crescentbeachguitar.com>
> http://subyjake.googlepages.com/
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