Can anyone help ID this setup?

[veeman]

Hello all...  I've just been offered a TD engine supposedly from an A2 and I need some help identifying what's what.  

Attached is a pic of the head / manifolds.  I'm pretty new to the TD world and I wanted to know if you can tell whether this is an eco-diesel or an earlier TD.  I don't have access to the engine code at the moment.

Any ideas on what year this could be from by just looking?  Thanks.

[vwmike]

That looks like it's a TD setup as I think I can see a pop valve on the intake. Eco Diesels didn't have that.

[veeman]

Does anyone else have any info?  I'm not exactly sure where the popoff valve would be in the pic.   From what I'm reading in the archives,  I'd be happy if it was a TD and not an eco...

Thanks in advance.

[jtanguay]

the pop off valve is a failsafe to keep the boost to around 10 psi.  It does look like yours has it! It is also hydraulic valve lifters, so its older than 86

If you don't know much about vw diesels, and you're putting this back together yourself, you will definitely be posting a LOT on this forum to get her back up and running from those pieces :lol:

[veeman]

Thanks for the info...  

I'm pretty stoked about the whole project.  I'm supposed to pick up the caddy (blown NA diesel motor) and the TD tomorrow.  I'll know more about what I have / don't have by then...

Although I'm new to diesels, I've been working with A1's and the gasser VW's for quite a while. I'm hoping a lot of the BTDT's carry over.  I'll probably have a bunch of questions, you're right.

So...what if I want a bit more than 10psi?  Is it like a normal wastegate in that you can change spring pressure to change when boost comes on / tops out?

[fspGTD]

It does look like a garrett turbo from a 1.6lTD.  That's the one that can flow a lot (compared to the later model smaller turbos), but has comparably more lag and needs high engine RPM before the boost kicks in.

I don't know how it is possible to determine from this angle whether the head is hydraulic or solid lifter.

I'd be concerned about that uncapped turbo oil supply fitting.  You don't want ANY dirt getting into there.

I agree it's hard to see from the pic, but it does look like it has a blow-off valve which would rule out it being an eco-diesel model.  The turbo also looks like a standard Garrett 1.6lTD turbo.  And the upper downpipe looks like it reaches back which would make it an A2 not an A1 model.

That turbo isn't really externally adjustable like the KKK 1.6lTD turbo is.  It has a crimped-on cap around it's wastegate diaphgram which prevents access to the threaded shaft and nut.  You can change boost pressure by installing a pneumatic control of some sort (IE: a variable restriction) in line with the wastegate boost supply line.  There are different ways it can be done.

If you are mechanically inclined at all, I think you'll pick up this diesel stuff no sweat.  The previous vw experience will put you that much further ahead on the learning curve.

[vwmike]

Thanks for the info...  
So...what if I want a bit more than 10psi?  Is it like a normal wastegate in that you can change spring pressure to change when boost comes on / tops out?

How do most people defeat that pop valve? I was thinking about putting a freeze plug in place of my pop valve or perhaps I could find an eco diesel intake....but that's probably not worth it. From the looks of my turbo a catch can is also in order.

[jtanguay]

yeah most people just jam something into the pop off valve.. lol even a bottle cap.   I'm pretty sure its hyd valves, since I zoomed in (also looks like the valve cover hasnt been on in a while--some rust)

If it was me I'd hope its hyd valves.   Mech gives me a bit more power, but doesn't make up for the hassle of adjusting them every 10-15'000 kms

[fspGTD]

Ummm... that thread would be here: http://www.vwdiesel.net/phpBB/viewtopic.php?t=107

[fatmobile]

And the upper downpipe looks like it reaches back which would make it an A2 not an A1 model

 I've got both upper downpipes right here.
 On one of them, the turbo outlet flange lines up with the right side of the upper downpipe ... so nearly all of the downpipe is to the left (driver side) of the turbo outlet flange.
 On the other one, the upper downpipe is longer and the turbo outlet flange lines up close to the left side of the upper downpipe outlet so the outlet is almost all to the right of the turbo outlet flange ... like the one in the picture.
 I was thinking (when I saw this picture above) that the downpipe would be for an A1 because it terminates farther to the right (passenger side) which it would need to do, to miss the shift linkage on an A1.

[veeman]

Just got the caddy and the TD engine home yesterday.  It's a CY code engine which Jake confirms to be from an A1  jetta/rabbit.  Odd since the PO said that it had come from an A2...maybe someone swapped it in.

I still have to check the downpipe to see if it's A1 or A2 though... I'll read the numbers and look it up in the family_album.

Unfortunately, I've already run into another problem with this TD engine, but I'm going to start another thread on that one (cam bearing caps missing).

[Mark(The Miser)UK]

Just got the caddy and the TD engine home yesterday.  It's a CY code engine which Jake confirms to be from an A1  jetta/rabbit.  Odd since the PO said that it had come from an A2...maybe someone swapped it in.
.

 :?: Maybe it came from Europe.  AFAIK MF block never issued over here (UK at least) All blocks up to '88 were CY... :?:

  With 'W Germany' plastered over every piece

[vwmike]

I've never found any direct evidence through ETKA that 85 TD golfs existed, yet I've heard of them. I think they did exist, but were in very low numbers and I've heard of them using the engine code CY as it wasn't until 86 when they started to switch over to hydraulic lifters in the diesels.

[Mark(The Miser)UK]

I've never found any direct evidence through ETKA that 85 TD golfs existed, yet I've heard of them. I think they did exist, but were in very low numbers and I've heard of them using the engine code CY as it wasn't until 86 when they started to switch over to hydraulic lifters in the diesels.

 :mrgreen: I think what you have is a quality early W German 'special delivery' import from some early Dieselhead :mrgreen:
CY block used with both hydraulic and mechanical. CY block used in various forms of Rabbit(Golf) and Quantum from 1982. CR block (N/A) took over from ( JK) N/A
MD and MF never here.. an upgrade for you? or a downgrade from the South :wink:

Don't have a copy of the European *'Kate' only your American one :cry:

 :evil: *Kate is an anagram to stop 'Big Brother' from VW... :evil:  
However if you look at this site and use the car model finder all will be revealed...
 (Read Golf for Rabbit and Passat for Quantum and Jetta for  er um Jetta :lol:

http://www.eurocarparts.com/ecommerce/CarModels.asp?SELECT=true

[veeman]

I just worked on the engine some more... It's definitely came from an A1.  I can see that there was a bracket on the passenger side like an A1 would have and I confirmed that it does indeed have an A1 downpipe (171-253-805).  
...So it's a solid lifter CY from a rabbit /jetta for sure.  I bet the PO got confused when he said it came from a "jetta" thinking it had to be an A2.