Date: Wed, 28 Jun 2006 12:24:09 -0500
Reply-To: Ron Mueller <wasserbox@MSN.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Ron Mueller <wasserbox@MSN.COM>
Subject: Re: Coolant pipes replacement
Content-Type: text/plain; charset="iso-8859-1"
This is what the thermostat is for.
Why do larger vehicles use a 4 core radiator?
To allow the cooling system to be able to cope with hihger operating temps
when they are towing/hauling heavy loads.
Anything to help the cooling system to cool more easily is better.
I don't know where I can get 3 or 4 core radiator for my Vanagon.
The Stainless cooling pipes lowered my operating temperatures on long grades
and when towing dramaticly.
Marine grade, thick rubber hose has absolutley no heat transfering benefits
whatsoever, is difficult to work with, and is almost impossible ( not
totally but almost)to get throught the center cross member.
I had it in my Van at one time and at best was a cheap, quick, poor
judgement call for replacement coolant line problem.
If VW thought that rubber 20' of rubber hose was the right answer, they
would have used it when the Vanagon's were designed and manufactured.
The stainless pipes are the right answer.
Not a frugal solution, but a sound one.
Ron
----- Original Message -----
From: "Robert Fisher" <refisher@MCHSI.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Wednesday, June 28, 2006 12:42 AM
Subject: Re: Coolant pipes replacement
> I don't follow your reasoning on this. The engine is not supposed to be
> kept
> 'very cool', it's designed to operate in a certain temperature range and
> running cool can ultimately result in damage just as well as running hot,
> albeit over a longer period of time.
> The original materials used for these pipes are indifferent conductors at
> best. I don't believe the system was designed to be dependant in any way
> on
> heat transfer from the pipes themselves for cooling. I don't have the
> means
> to measure it at the moment (some on the list do), but given the various
> factors involved (initial temperature from the engine/thermostat, flow
> rate
> and ambient temperature just to name a few) I'd bet the heat loss in that
> section on the stock system is generally negligible- and I'd further bet
> that heat retention with rubber hoses is essentially negligible as well. I
> think your cooling system would have to be otherwise seriously compromised
> for the difference to ...well, make a difference. The Vanagon is in fact
> the
> only vehicle I've personally seen that used anything but rubber hoses.
> In fact I wonder that having metal pipes wouldn't contribute to operating
> issues during the winter in some climates due to the very radiant
> properties
> you describe.
>
> Cya,
> Robert
>
> ----- Original Message -----
> From: "Ron Mueller" <wasserbox@MSN.COM>
> To: <vanagon@GERRY.VANAGON.COM>
> Sent: Tuesday, June 27, 2006 9:51 PM
> Subject: Re: Coolant pipes replacement
>
>
> > The problem withn using the marine grade rubber reinforced hose is that
> > the
> > rubber is an excellent insulator of engine coolant heat.
> > The stainless pipes radiate the coolant heat just as large 20 ft;
> > radiator
> > would and aids immensely in keeping the engine very cool.
> >
> > Strike the rubber hose from the record.
> > It is not an appropriate conductor of heat.
> >
> > Ron
> >
> >
> > ----- Original Message -----
> > From: "mark drillock" <drillock@EARTHLINK.NET>
> > To: <vanagon@GERRY.VANAGON.COM>
> > Sent: Monday, June 26, 2006 9:00 AM
> > Subject: Re: Coolant pipes replacement
> >
> >> I have replaced them entirely with Marine Exhaust Hose. Get the wire
> >> reinforced, smooth outside type, 1 1/4" inside diameter. Will not kink
> >> with the gradual bends needed to follow the path of the original pipes.
> >> You will need to enlarge the hole in the crossmember where the pipes
> >> pass through, just like the Bentley says to do when replacing the metal
> >> pipes with the later plastic ones. This 1 1/4" hose easily connects to
> >> the existing radiator and engine hoses for models 1982 - 85 that came
> >> with metal cooling pipes.
> >>
> >> Here is a link to the hose I am using.
> >>
> >> http://cgi.ebay.com/ebaymotors/Marine-Hardwall-Exhaust-Water-Hose-1-1-4-ID_W0QQitemZ4550097209
> >>
> >> Mark
> >>
> >> JP wrote:
> >>
> >> > Hi all,
> >> >
> >> > I need to replace my coolant pipes on my 84 westy's (not the
> >> > flexible
> >> > one)
> >> > Those are the rigid ones that goes from the front to the rear of the
> >> > camper.
> >> > Any other replacement alternative beside the stainless steel pipes
> >> > sold by
> >> > mr prospect? Cant they be replaced by flexible pipes? If so, what is
> >> > the
> >> > inside pipe diameter and where to get those.
> >> >
> >> > TIA
> >> >
> >> > --
> >> > JP
> >> > 84 westy
> >> >
> >> >
> >>
>
| 
