Re: Swapping a diesel into a 5k question

["Chris Bishop" <crash70@epix.net>]

> Eyvind Spangen writes:
> > [ Swapping a I5 TDI engine into a 5000 ]

--snip--

Evyind,

When you say "TDI" are you referring to a 5k turbo diesel? TDI engines (as
far as I know) are the *new* diesel engines with electronically enhanced
injection systems. To the best of my knowledge,. VW/Audi does not make a
"TDI" I5 engine. They make the 1.9 litre TDI 4cyl, and a V6 TDI. The *only*
5 cyl diesel engine that VW/Audi makes (again, to the best of my knowledge)
are strictly mechanical fuel injected. I also know that there is a VW/Audi 
6 cyl diesel (volvo used them for a while in thier 200 series cars,
normally aspirated and turbocharged).

If you are referring to a regular turbo diesel, (the older ones)
dropping one into a 5k is a snap. The engine is COMPLETLEY mechanical, and
does not require ANY kind of computer to operate. In fact, if you could
start the engine by hand, it would run all by itself.

You might have to modify your exhaust system a bit, but other than that,
everything is pretty straightforward as far as mechanical stuff goes. Oh
yeah, remove the fuel pump completely from the fuel system, as diesels have
mechanical fuel pumps.

The only wiring you'll have to fabricate is a glow plug circuit. If you can
grab this from a donor car, it could easily be modified to tap into your
existing wiring. Your oil temp and pressure switches and water temp
switches are wired exactly the same as a gas engine. One small thing: the
shut off solenoid on the fuel distributor pump must have 12v supplied to it
in order for the engine to run. You could simply use the 12v wire from the
ignition coil. The solenoid is naturally closed, and is open when 12v is
supplied. This is the ONLY means of shutting off the engine. If this
solenoid sticks open, (or if you jammed it open, in theory) the motor will
run until it runs out of fuel. Like I said before, diesel engines are 100%
mechanical, and require no electrical power to run. The glow plug circuit
is only necessary for starting, and the fuel solenoid is added to make an
easy way to turn the engine off.

The glow plug circuit consists of glow plugs, an engine temperature switch,
and a massive relay that handles the high amperage that the glow plugs
draw. The relay also has a circuit that supplies the power to the glow
plugs based on engine temperature. If you can't find a relay or harness,
you can simply operate the glow plugs by hand with a manual switch and a
relay. You just have to be careful not to power them too long, or they'll
burn out.

Hope your question was answered!!!





----------
> From: Ti Kan <ti@amb.org>
> To: Eyvind Spangen <eyvind.spangen@c2i.net>
> Cc: Steven.Buchholz@kla-tencor.com; quattro@coimbra.ans.net
> Subject: Re: Type-44 5k with TDI engine?
> Date: Thursday, December 03, 1998 4:44 PM
> 
> That said, the question is why go the TDI route when a good I5
> turbo engine can be swapped in more easily and makes more power...
> 
> -Ti