Date: Fri, 1 Sep 2000 14:44:16 PDT
Reply-To: Mark Dorm <mark_hb@HOTMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Mark Dorm <mark_hb@HOTMAIL.COM>
Subject: Re: difference between '85 and '87 spare tire
Content-Type: text/plain; format=flowed
Yeah, we need a fluid mechanic specialist here... could be that if the
diameter is small at one point and wider for the remainder of a given
length, then it would be different than if the entire same said length were
equal to the smallest diameter of the former. Sorry about the twisted
jargon. The difference could be one of pressure... which could affect fluid
flow... ... can anybody help me???
>From: Dave L <k1cajun@PIPELINE.COM>
>
>I'm skeptical that the hose difference has anything to do with
>increasing cooling capacity due to the larger tire size. Certainly to
>make up for the extra room for the spare, though.
>
>The amount of fluid that can be pushed through a system is going to be
>limited by the narrowist part and the ability of the water pump.
>Unless there is a different radiator also, then the hose ends are
>still the same diameter. If the diameter of the hoses is larger in
>their middles, then it's probably to compensate for the extra
>turbulence created by the extra bends in them.
>
>I'm not an engineer - would someone who has more technical knowledge
>of fluid mechanics care to comment ? My knowledge is only intuitive
>based on kayaking whitewater rivers. When the river bed narrows or
>bends, the same amount of water goes through, even if there is a wide
>calm section of river above.
>
>Mark Dorm <mark_hb@HOTMAIL.COM> wrote:
>
> > Wonder if this is playing a roll in why the 2.1's aren't going as
> > many miles as the 1.9's before need a full rebuild...... yes, no,
> > maybe???
> >
> > From: Robert Lilley <Wolfvan88@AOL.COM>
> >
> >> David,
> >> You will also need the front radiator hoses for the vans equipped
> >> with the larger 205x70x14Ħħtires. The hoses are slightly larger to
> >> accommodate the increased demand on the engine with the wider tires
> >> (They take more power to push then the narrower tires and cause the
> >> engine to generate more heat so VW put in larger hoses for the
> >> radiator to flow more coolant. And the hoses are shaped differently
> >> to accommodate the increased distance the tire rest is from the
> >> top.
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