the 85 1.9 engine should fit onto the 84 1.9 waterboxer wiring harness just
fine.

there are only 3 areas that could be different at all, that I can think of
anyway .........
one is the power steering pressure switch that an 85 uses, but the 84
doesn't - it won't matter at all not having that.

also,. vacuum switching valve or valves in the right front corner of the
engine compartment, whether you have those or not, won't make any difference
to the 85 engine.
I'm not sure, but it seems that I have seen the later type two prong wire
connector on some 1.9 waterboxer harnesses for the throttle switches , ,
rather than the 4 single wires and connectors that go to the 84 throttle
body switches.  If you need to, you just put the 84 throttle body and
switches on the 85 engine.
But basically a bolt-in.
The 85 has an improved distributor cap and coil and plug wires - a better
type connector on the end of the spark plug wires - where there is a small
post in the distributor cap, and in the coil - I always use those, which the
85 engine should have, and the coil that was used with it would also have
that improved plug wire system.
Scott
www.turbovans.com

an all VW family I see. I'm sorry !!
lol.

----- Original Message -----
From: "Ian Allan" <ian.allan@BMTS.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Monday, April 06, 2009 6:13 PM
Subject: 84 vs 85 Digijet

> Hi;
>
> This is a bit of a cross post but I am looking for advice re
> installing an 85 complete engine into an 84 Westfalia using the 84
> harness. Until to day I thought that there was only Digijet and
> Digifant. Little did I know that 85 Digijet differs from 84 Digijet.
>
> Can anyone tune me in on what has to be changed? I want to use the 84
> harness.
>
> Thanks
> Ian Allan
>
> 94 Eurovan Westfalia
> 86 Syncro
> 85 Westfalia/Bostig
> 02 Jetta 1.8t
> 90 Audi 90Q