Date: Wed, 17 May 2000 07:05:02 -0400
Reply-To: EMZ <vw4x4@FYI.NET>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: EMZ <vw4x4@FYI.NET>
Subject: Re: [Syncro] Heat in an air-cooled Syncro (long, boring,
self-involved)
In-Reply-To: <3921FACD.4BC3DD6B@anent.com>
Content-Type: TEXT/PLAIN; charset=US-ASCII
Being in the middle of an engine swap right now, I would suggest
keeping it water cooled. The only reason for this would be because, this
job is not for the average corner mechanic. To do the job 100%, you must
have bolt on parts, or have a good idea of the engineering behind the
hole ball of wax. Once the corner mechanic realizes how deep he is in
over his head, he will start cutting corners, and you will end up with
a mess. Keeping his job as simple as possible lessens this possibility,
by keeping it water cooled. Now if you doing it your self, its a different
story.
Eric 86-VW4x4
vw4x4@fyi.net 72-240z
Pittsburgh, PA USA 1936-Chrysler
On Tue, 16 May 2000, ed wrote:
> No, not an air-cooled Syncro from the factory, anyway. In my quest to
> make our Syncro that-which-it-is-not, I'm down to three contenders for
> engine:
>
> 1.9TD
> 1.8T
> 3.2L 911 flat-6
>
> Yes, it's a darned eclectic list. Each has advantages and
> disadvantages, each makes for a particular kind of vehicle. I've got
> the means and intent to do one of them, just have to decide on which. I
> would appreciate hearing from owners who have executed any of them (in
> addition to Karl M :-). Have ruled out the Subaru for reasons of ground
> clearance, and the 2L four for poor cost/performance ratio - since I'll
> not have time to do the work myself, any conversion will be pricey.
>
> I've thought through most of the details of each, with the exception of
> how to work the heat in the 911 conversion.
>
> Some folks have apparently used an oil-water heat exchanger to drive the
> stock system. Good idea, but the oil temp in my own 911 takes a
> donkey's year to get up, especially when the weather is cold - 11 quarts
> of oil is a lot to heat up. One could electrically heat the water til
> the oil comes up to temp, but seems klugey and in any case retaining
> water heat requires pumps, controls and other cruft. MSDS recommends
> reverting to the air-cooled model of heat, which is intriguing, so not
> being a Vanagon expert I started studying Bentley.
>
> Now the first thing I see is that the late air-cooled air handler and
> the wasserboxer air handler look damn near identical, with the h2o
> version having a heat exchanger instead of one of the baffle plates.
> Notably, the wasserboxer has provision for an auxiliary heat booster on
> certain non-US Syncros that looks exactly like the old air-cooled extra
> heater. And the place where this thing enters is exactly where the
> ductwork from the engine arrives on the air-cooled Vanagon.
>
> So am I correct to think that I could take a page from Bulley's
> bus-heater treatise and build myself an insulated duct from the 911 heat
> exchangers to the air handler, following the routing of the Syncro aux
> heater ductwork? Will this function as an exact replacement for the h2o
> heat exchanger, or is the ducting inside the air handler going to route
> this "aux" heat just to the cabin, say, and not to the defroster?
>
> If I have to revert to the old-style air handler (and thus pull the dash
> and reengineer a buttload of stuff) this deal is a non-starter. Any and
> all informed opinions would be appreciated!
>
> Cheers -
>
> ed devinney
>
>
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