Re: Turbo diesel in Audi 100

[tm2@earthlink.net]

Eyvind Spangen wrote:
> 
> I'm here again with my (stupid) questions:
> 
> Is it possible to install the "good, old" 5-cyl turbodiesel engine
> into a normal Audi 100 (US 5000) without too much problems? I've given
> up the TDI idea, it will become too difficult and expensive.. But the
> plain, old turbodiesel which probably runs without any more
> connections than shut-off solenoid, diesel fuel, cooling and glow
> plugs, in addition to the belt driven things..
> 
> Would such a install be difficult or expensive? I'm looking for a car
> that will be economic, easy to maintain, and it has to be an Audi of
> the type 44 series.. :-) And I'm relatively low on money. :-)
> 
> ES

ES

I had two 1980 Audi 5000 diesels, both with 5spds. and they got about
35mpg. The diesel engines were not built that well to be used as a
diesel.  The heads were prone to cracking between the intake and exhaust
valve seats down to the water jacket.  Both of my engines wore out at
about 100K miles (cylinder wear).  When the cylinders are worn you
experience hard starting when the engine is cold. 

Make sure injector pump is not worn.  If there is wear it will be on the
pump shaft bore.  The pump has a cogged wheel on it and sometimes the
belt is over tightened.  If there is alot of movement in the shaft(back
and forth) it allows air to get into the fuel pump part of the injector
pump.  How this works is on the back end of the pump is a built in reed
style fuel pump.  It pulls fuel in from the fuel tank.  If air gets past
the shaft into this pump, there will be less pull.    
 
If you decide to go the diesel route here is what is required.

1. Switch the fuel line to the bottom of the tank.(This is where it is 
on the diesel 5000).  There is a return line so you may be able to use 
the old on.  There is no fuel pump in the gas tank of the diesel.  

2. The engine and trans will bolt right in the car.  Uses the same motor
and trans mounts.  There is a auxilary radiator in front of the engine.
3. Use the same alternator hookups.
4. the only other electrical hookups are the ignition switch to the
starter and glow plugs and oil pressure, water temp senders and
radiator.
5. You also need a idle speed adjustment knob.
6. The exhaust manifold may need to be fitted to the exhaust pipe.
  ( Not sure)
7. You do not need a Cat. converter.
8. I this there may be only one muffler.
9. The diesel has a vaccum pump on it for the power barkes.
   You won't need this if your car is 84 or newer.
10. The battery in the diesel is where the fuel distributor is but you
  should be able to leave it in the back.  The desiel requires a 800cca
  battery instead of the standard 550 or 600cca battery. 


This is what I remember about the diesel.  Hope I did not discourage 
you.

If you decide to go ahead with it I have some of the tools needed to set
the injector timing.  I also have a 78-83 5000 manual which has all what
you want to know or not want to know about the Audi Diesel.


Pat Korach
Kirkland, WA