This is so easy that it is almost as easy as just changing the engine.
I keep the digijet system as it works really well.  I also keep the
1.9l coolant system, exhaust system and ditch the oil cooler (haven't
had any problems from overheating, etc).  Like the other person said
you just need the 1.9l thermostat housing and waterpump to get the
coolant system to work, and you either need an air intake box from a
later model '85, or just adapt over the 2.1l air box with a couple of
small hoses (if you can do the second as the 2.1l throttle body has a
larger inside diameter so you will get more air flow).  That is all.
As you may know Boston Engine and I are selling Performance Chips for
the Digijet ECUs.  These are $250 plus we need your old ECU as a core.
They seem to be making people happy and give them more power.

Thanks,
Ken Wilford
John 3:16
http://www.vanagain.com
Phone: 856-327-4936
Fax: 856-327-2242

----- Original Message -----
From: Karl M <thewestyman@MINDSPRING.COM>
Date: Thursday, October 10, 2002 0:00 am
Subject: 1.9 to 2.1 wbx swap questions

> I am swapping a 1.9 and a 2.1 in a friend's 1985 Westy, and would
> love to
> hear advice and/or experiences from others that have traveled this
> route.
> I am trying to decide whether to use the Digijet or the Digifant fuel
> system, also the old 1.9 cooling hose setup or the new and
> improved 2.1
> setup. Advice, pitfalls? I am inclined to reuse the Digijet with newer
> cooling system swapped over, but then I have never done this swap
> before.I've heard more power is available with the Digijet / 2.1
> combination.Please pmail, I'm currently in nomail mode. Thanks!
>
> Karl Mullendore
> Westy Ventures
> 1987 Westfalia Syncro 1.9TD
>