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#3453475 - 08/12/14 12:46 PM Re: 80 VW Rabbit Diesel [Re: Trigger]
Oldmoparguy1 Offline


Registered: 01/21/05
Posts: 4411
Loc: Charlotte, NC
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#3453507 - 08/12/14 01:04 PM Re: 80 VW Rabbit Diesel [Re: Trigger]
JHZR2 Offline



Registered: 12/14/02
Posts: 35762
Loc: New Jersey
Plenty of folks run old IDI diesels without additives. That said, IDI diesels benefit from adds for other reasons not associated with lubricity or the Ni-S eutectic alloy that is more "lubricious".

Low sulfur fuels with fewer aromatics also burn cleaner and dont deplete TBN as fast, both of which are more important in IDI than newer diesels.

I agree with the above regarding biocide and some other stuff. Id get it running with the biocide in the tank, maybe a bit of fresh diesel mixed in for good measure. After you get it solidly running, Id use LM diesel purge, run directly on it (take the fuel pump, filters, etc. out of the loop and have the injection pump feed and return directly into a container running on the DP.

But a bunch of filters as you may need them!

Good luck!

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#3453511 - 08/12/14 01:06 PM Re: 80 VW Rabbit Diesel [Re: Trigger]
Volvohead Offline


Registered: 05/25/05
Posts: 3550
Loc: SE Pa
Originally Posted By: Trigger
I just inherited a 80 VW Rabbit pick-up that is a Diesel . . .


I owned an '80 Rabbit diesel.

A legitimate 60 mpg vehicle and fun to drive, even if grossly underpowered and noisy. I remember mine could barely make a steeper upgrade if the AC were on.

I don't think you'll need an additive in the newer fuels, but if you want to toss in a little MMO, it won't hurt it.

Back when I had mine the practice was to run a 40 wt in them, as the pistons were sometimes prone to clogged lands and loss of compression with too light an oil. You could start the car as that developed, but you tended to overwork the glow plugs.

I don't recall if any of the pickups were Westmoreland Rabbits, but if they were, be prepared for routine repairs - nature of the beast.

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#3453582 - 08/12/14 01:59 PM Re: 80 VW Rabbit Diesel [Re: Trigger]
DBMaster Online   content


Registered: 09/18/12
Posts: 3050
Loc: Greg Abbott Land
A very good friend has a 1980 Rabbit diesel during my college years. It was lethargic, but rock solid. His used to blow head gaskets on a semi-regular basis. Hopefully, you won't have that issue.

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#3453604 - 08/12/14 02:24 PM Re: 80 VW Rabbit Diesel [Re: DBMaster]
Donald Offline


Registered: 03/21/04
Posts: 15208
Loc: Upstate NY
Originally Posted By: DBMaster
A very good friend has a 1980 Rabbit diesel during my college years. It was lethargic, but rock solid. His used to blow head gaskets on a semi-regular basis. Hopefully, you won't have that issue.


I decided to re-torque the head gasket on my Rabbit back in 1980 and I did it properly. Blew a head gasket the next day.
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#3453618 - 08/12/14 02:38 PM Re: 80 VW Rabbit Diesel [Re: Trigger]
ironman_gq Offline


Registered: 04/30/14
Posts: 249
Loc: MN
No need to run anything other than a good additive. I like Diesel Kleen or Standyne lubrication additive. A little TCW-3 won't hurt though if you have some around. Treat the tank with some biocide to kill any algae growing in there and plan on changing the fuel filter a few times till any gunk in the tank clears itself out or drop the tank and clean it.

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#3453619 - 08/12/14 02:41 PM Re: 80 VW Rabbit Diesel [Re: Trigger]
DBMaster Online   content


Registered: 09/18/12
Posts: 3050
Loc: Greg Abbott Land
My friend was a very skilled DIYer. At least he was able to replace them himself. I only recall when he was on his third gasket so I don't know how many times it happened. He got rid of the car and bought my neighbor's Dodge Caravan.

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#3453760 - 08/12/14 05:14 PM Re: 80 VW Rabbit Diesel [Re: Trigger]
Rat407 Offline


Registered: 12/13/02
Posts: 860
Loc: North Carolina
If you ever have to replace the head gasket, don't use the factory stretch bolts. Get a set of Raceware studs. The ones that fit a Chevy Vega, sorry that is all I can remember on them, will work and it really extends the life of the head gaskets.

Here is a cool forum that you can get a ton of info from.

http://www.vwdiesel.net/forum/

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#3454841 - 08/13/14 08:54 PM Re: 80 VW Rabbit Diesel [Re: Trigger]
bigjl Offline


Registered: 09/06/12
Posts: 1725
Loc: London, England
I would be a bit concerned with bio damaging the seals in the fuel system.

I would also run some 2 stroke oil with the diesel.

My old Citreon Xantia,1.9 XUD turbo diesel, responded very well to this.

When i had it you could get hold of marine diesel which was not low suplhur, that changed a couple of years ago, and it always sounded happier and was nicer to drive on this full fat Marine diesel.

It always felt slightly flat on low sulphur diesel and this was cured by using 2 stroke, i used the semi synth stuff at the ratio of 1:200.

These old VeeDubs diesels were not known for speed or refinement they were always a bit behind the French diesels at the time but they were very robust.

You are lucky to find one.
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#3455258 - 08/14/14 12:21 PM Re: 80 VW Rabbit Diesel [Re: bigjl]
Volvohead Offline


Registered: 05/25/05
Posts: 3550
Loc: SE Pa
Originally Posted By: bigjl
. . . These old VeeDubs diesels were not known for speed or refinement they were always a bit behind the French diesels at the time but they were very robust.


You're right. As much as I generally enjoyed the VW diesel, I very nearly replaced it with a beautiful black Peugeot 505 turbo diesel wagon (estate across the pond). But it slipped through my fingers. One of those cars I regret not enjoying when they were around. Its Achilles was body corrosion, but I could have worked around that.

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#3455262 - 08/14/14 12:22 PM Re: 80 VW Rabbit Diesel [Re: Trigger]
satinsilver Offline


Registered: 01/24/08
Posts: 3087
Loc: Ohio
Any pictures of the beast? Since we're pretty visual on here.

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#3455703 - 08/14/14 06:53 PM Re: 80 VW Rabbit Diesel [Re: Trigger]
artificialist Offline


Registered: 09/23/07
Posts: 7506
Loc: Florida
How much more did a Peugeot 505 cost versus a VW Rabbit/Golf back then? If the price difference was big, I don't think it would be exactly fair to compare engine refinement.
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#3456010 - 08/15/14 04:04 AM Re: 80 VW Rabbit Diesel [Re: Trigger]
Trigger Offline


Registered: 04/16/08
Posts: 21
Loc: Northern California
Hey guys, sorry I did not get back to you. My internet was down. Thank you all very much for the advise. I will run an additive, looks like some really good ideas here. I am certainly going to replace the timing belt, that is super cheap considering if it blows up on me! It needs a new water pump, water is pouring out of the weep hole.

As far as pictures, let me get some paint on it now. Sitting out in the sun and rain for years has caused much on the paint to peel, so I'll be sanding and painting soon too.

Travis

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