Re: Swapping a diesel into a 5k question

[eyvind.spangen@c2i.net (Eyvind Spangen)]

On Fri, 4 Dec 1998 08:22:49 -0500, you wrote:

>
>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).

You in the US didn't get the 2.5 I5 TDI, while Europe has got plenty
of them. The I5 TDI is now superseded by med V6 TDI, mainly due to the
fact that the I5 doesn't fit into the new A6 engine bay)
We got the 2.5 TDI in 3 versions:
120 hp (used 1990-1991 in type 44 cars, extremely rare)
115 hp (used 1991-1994 in C4 100 cars, pretty common)
140 hp (used 1995-1997 in C4 A6 cars with 6-speed tranny, common)

>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.

That's the old fashioned turbo diesel. Probably easyto install, but
too slow. I will be using the car for some moderate to heavy towing,
so the TDI will be perfect for my needs..

>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.

Installing the TDI manifold and downpipe, and use a custom bent pipe
to connect to the standard exhaust.. I think this will be pretty ok.

>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 TDI is fully computer controlled, I think. But the glow plugs and
shut off solenoid will be there, but probably computer controlled.

>Hope your question was answered!!!

No advice like good advice!

ES