1.9D Rabbit

[VWrabbit317]

Looking for some insight here. Just got this 82 diesel pickup. Me, and the previous owners, had thought it was a 1.6D. I just pulled it in to check it over and noticed the valve cover isn’t like any cover I’ve seen on a 1.6 before and then looked on the back of the block and it’s stamped 1.9D. So what do I have here? Either a 1Y or an AAZ? I appreciate any info!
I planned to swap all my turbo and fuel from my old 1.6 rabbit to this one.

[ORCoaster]

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[VWrabbit317]

What do you think? From what I’ve gathered it’s a 1y. Which is basically a n/a AAZ? So all parts should swap over.. doesn’t look like the 1y was ever in the states either

[libbydiesel]

1Y for sure.  All the turbo stuff will swap from a 1.6 except a couple gotchas.  The intake ports are different between the 1.6 and 1.9.  Better to get an AAZ intake manifold.  The oil filter flanges are different between the 1.6 and the 1.9 due to the taller block.  You will need a 1.9 filter flange with the port for the turbo feed line.  The flange on currently on the engine might work if there is a plug in place where the turbo supply line needs to be.     

[fatmobile]

 Where are you located.
 These aren't real common in the US.
 Make sure the timing belt sprocket is solidly on the crank nose.
 I've heard a special alternator pully can help keep that from unraveling.

[VWrabbit317]

I’m located in Illinois. The truck came from Texas. I’ll get the timing cover pulled off and check the sprocket. When I go to purchase parts such as a timing belt and tensioner I can just buy stuff for an AAZ, correct? Does the 1y have oil squirters?

Weird that someone would’ve swapped this in instead of an aaz. I can’t imagine these are easy to come by seeming how they were never here.. or even in Canada for that matter. The PO had no idea either. 

[libbydiesel]

The 1Y has the piston cooling oil jets. 

Timing components can be fore the AAZ. 

There are some internal differences with the 1Y (IIRC, pistons, rods, valves) but it should do fine with turbo added. 

I believe PartsPlaceInc and Overland were selling the 1Y for a while. 

[VWrabbit317]

Looks like the timing belt needs to be replaced so Ill check the timing belt sprocket for fitment/tightness at that time. It has some weird looking wear marks on the topside of the belt currently. Any ideas what would cause that? There's a raised line down the center and there's other marks all over the belt as seen in the picture here..


Would the factory 1.6d wire harness have been used with this motor or would they have swapped harnesses as well? I have this bundle of wire zip-tied up with two unused plugs..


The motor mounts are also pretty shot, but those look to all be the same as 1.6 mounts.

Ill have to keep an eye out for an AAZ intake manifold. They look extremely similar to the 1.6td one I currently have but the port pattern must have just a slight difference? Will the 1.6td exhaust manifold be fine?

[libbydiesel]

That belt looks terrible.  Probably overly tight.  Make sure the intermediate shaft sprocket is from a 1.9 and NOT from a 1.6 as they are different diameters. 

[VWrabbit317]

Apart from size it looks like pulleys look quite different too. AAZ pulleys look solid whereas 1.6 pulleys have holes all around them.. correct me if I’m wrong.

Do I need to worry about putting ARP head studs in when I turbo it?

[libbydiesel]

Most of the 1.9 intermediate shaft pulleys have the holes the same as the 1.6 pulleys and look much like the 1.6 pulleys.  If it has an 068 part number it is the 1.6 pulley and should be replaced with the correct one. 

[VWrabbit317]

Most of the 1.9 intermediate shaft pulleys have the holes the same as the 1.6 pulleys and look much like the 1.6 pulleys.  If it has an 068 part number it is the 1.6 pulley and should be replaced with the correct one.

good to know! I'll take a look at it tomorrow then. Any idea what kind of power/boost this should handle before I need to worry about studding it?

[ORCoaster]

Don't worry about the power boost.  Putting studs on makes doing any work on that head so much better in the future and will help seal a regular gasket much better than the standard method using head bolts. 

Spend the money now and you can sleep easier after the rebuild.  Turbo later?  Not a problem.

[VWrabbit317]

Don't worry about the power boost.  Putting studs on makes doing any work on that head so much better in the future and will help seal a regular gasket much better than the standard method using head bolts. 

Spend the money now and you can sleep easier after the rebuild.  Turbo later?  Not a problem.

Good point. Well then, contemplating pulling the ARP studs out of my 1.6 as I’m pretty sure they’re the same part number for the 1.9, and I’ve only got about 5k miles on them. Can these studs be reused or is it not recommended?

[fatmobile]

  That's kind of a franken engine.
 Looks like the pump is from a 1.6 right guys?
 I haven't actually seen a 1.9 pump.

 You need to pull the intermediate shaft out and take a look at it.
 Those lines on the back of the belt are left by the I-shaft pully.
 Check the I-shaft bearings and change the seal and o-ring.
 Pull the vacuum pump to support the other end while pulling it out.