What Engine Is This??

bottleworks · Post by **bottleworks** » Thu Oct 04, 2007 4:57 pm

I have an 1981 VW Pickup that I got for free.
The Past owners had a replacement engine installed sometime ago (well over 10 years ago). The water jacket that normally has the two temp sensors for the gauge and the glow plugs only has one sensor. There is another sensor at the upper radiator hose that is not in use. It looks like this was once a turbo engine. They brazed off oil line that goes to the turbo...

I am trying to find the coolant hoses that interconnect the oil cooler and the water pump housing. Any Ideas? And what is the sensor at the upper radiator hose normally used for? Any idea what VW this engine came out of? Thanks!

Vincent Waldon · Post by **Vincent Waldon** » Thu Oct 04, 2007 5:46 pm

Is there any designation on the block itself ??

Yes, that's a turbo oil filter flange... might be there randomly or part of the original block.

I believe the coolant sensor in your second picture is for an air-conditioning shutoff relay... if so this is a later 1.6 and/or 1.9 engine since they changed AC sensor locations on later models.

If its a 1.9l its probably a 1994 'cause I seem to recall this specific sensor was discontinued on later models.

The flat vacuum pump with the yellow plastic vacuum port is another thing I typlically have seen on later 1.6 to early 1.9 engines.... 1990-1994 perhaps ???

Or... someone built up the block from a bunch of donors.... and of course all of the above are guesses on my part... others will doubtlessly chime in.

Free pickup... you lucky dog !!!

Vince

surfcam · Post by **surfcam** » Thu Oct 04, 2007 6:20 pm

I believe on the back side of the engine under the exhaust intake it should be marked. If it's a 1.6. Then you can try a figure out if it mechanical or hydraulic head. The mechanical one only has one oil return in the center of the front of the head. You should see a big bump their. I don't know much about the 1.9's.

bottleworks · Post by **bottleworks** » Thu Oct 04, 2007 6:39 pm

It does not have hydraulic lifters. I had the valve cover off when I replaced the timing belt, motor mounts, and rebuilt the injection pump (using Homemade B100).

The truck was free, however, I have spent almost 400 hours on it and I would think at least $1,000 on parts. Virtually everything is now new. Including the interior . I have 98 Jeep Cherokee seats, seatbelts in it... Micro suede headliner, backing, dash is covered... Welded in a new floor, new carpet...New door panels...suede. Repainted it... Rebuilt odometer... So many, many, little things.

It looks like I am going to have to drill and tap the front side of the water jacket that should have the two temp sensors. Any one have a better idea to get both temp sensors on the engine?

Would that A/C sensor at the upper radiator hose be useful? What are the parameters of that sensor?

Post by **Fatmobile** » Fri Oct 05, 2007 1:59 am

Nice project.

I am trying to find the coolant hoses that interconnect the oil cooler and the water pump housing

It looks like you already have those hoses.
Looking for new ones?
Jack is our sponsor here at vwdieselparts.com so of course we are going to tell you to buy from him and support the forum,... listing the names of his competitors would be rude but you might get a few PMs pointing you to places others have gotten these parts.

Do you have a picture of the piece you are going to drill and tap? Not really drilling into the waterjacket right? Many of the coolant ports come with a nice flat spot to drill and install a sensor.
I've drilled and tapped another hole in a gasser coolant port so it would have a sensor for the glow plugs,... the gasser has an extra port for 5/8" hose. I used it for supply to the vegy system instead of installing an ugly "T" and clamps.
I don't think the AC sensor is going to be much help, it turns the AC compressor off when the engine gets too hot. It's not a range that is used much.

3Bunnys · Post by **3Bunnys** » Fri Oct 05, 2007 7:45 am

I probably have a fitting laying around for two temp sensors,,,, If you want it PM me....
Vacumn Pump is later model 83 or later,,there have been some recent threads about repairing it and some bearing that can be installed improperly that will cause it to have problems,,, ,,don't know if its interchangeable with earlier diaphram type, so not necessarily an age indicator.... My 82,83 & 84 rabbits all have the 2 pin thermo switch on radiator return line,,, my memory is its tied into A/C.... and I had a 79 non A/C with that sensor and nothing connected to it,,, BTW that sensor is in a dry well (does not come in contact w/fluid), you can remove it and you will find a hole with a solid bottom, ..also if I remember correctly my 79 which originally has a slow glow system only had a single temp sensor at end of block.....Richard
ps...Great Pics

libbybapa · Post by **libbybapa** » Fri Oct 05, 2007 9:44 am

I have several of the flanges with the a/c cutout switch as pictured and none of them are "dry". They all have a gasket around the sensor and come in full contact with the coolant. In the picture you can see the sealing gasket.

How about telling us the engine code?

Andrew

bottleworks · Post by **bottleworks** » Sun Oct 07, 2007 6:30 pm

Fatmobile wrote: It looks like you already have those hoses.
Looking for new ones?
Jack is our sponsor here at vwdieselparts.com so of course we are going to tell you to buy from him and support the forum,...

I would be happy to buy from him. I just need to determine what I am working with so he can get me the right parts. On the backside of the block, I found two things: "1.6D" and "9." The head is uses non-hydraulic lifters and has a single oil passage in the center front. Does this help narrow down the possibilities?

Fatmobile wrote: Do you have a picture of the piece you are going to drill and tap? Not really drilling into the waterjacket right? Many of the coolant ports come with a nice flat spot to drill and install a sensor.

I can take a picture... It's the same place where the glow plug temp sensor *should* be. There is a flat spot there. I guess maybe it came from a gas engine? The VW made it back on it's first long distance trip this weekend.... About 300 miles round trip.

libbybapa · Post by **libbybapa** » Sun Oct 07, 2007 8:19 pm

You can very quickly narrow down which engine it is by looking at the engine code (flat section of the block under the coolant flange in the center of the head. First two letters are the code.

Andrew

bottleworks · Post by **bottleworks** » Sun Oct 07, 2007 10:06 pm

libbybapa wrote:flat section of the block under the coolant flange in the center of the head.

Oh... I missed those.

I will get those posted here on Monday. Thanks

bottleworks · Post by **bottleworks** » Mon Oct 08, 2007 3:53 pm

Ok, it looks like the engine code is "C Y". Any leads?

Quantum-man · Post by **Quantum-man** » Mon Oct 08, 2007 5:09 pm

CY block is standard issue for VWs '82 ish onwards to '86 in the US.
Later hydraulic head versions were MF in the US whilst here in the UK; CY blocks carried on as hydraulic headed versions...
So its a 1588cc engine...

libbybapa · Post by **libbybapa** » Mon Oct 08, 2007 9:44 pm

TD spec. Piston cooling oil squirter equipped.

CoolAirVw · Post by **CoolAirVw** » Mon Oct 08, 2007 9:58 pm

bottleworks wrote:I am trying to find the coolant hoses that interconnect the oil cooler and the water pump housing. Any Ideas? And what is the sensor at the upper radiator hose normally used for? Any idea what VW this engine came out of? Thanks.

That looks just like my 85 Jetta TD. You can order them for a 85 Jetta TD and probably get the right ones. The ETKA is very vague so its still hard to get the right ones. The Etka shows the ones without the cooler and if your car (the application the engine came from)(

) came with the cooler then they should send you the right ones. Boy thats clear as mud.

Here's a pic of mine.

bottleworks wrote:I would be happy to buy from him. I just need to determine what I am working with so he can get me the right parts.

Uh, please call Jack and try to buy those hoses but when I tried to buy them he said he couldn't get them. (even special order.) They are very expensive from dealer (45 bucks for one and 27 for the other) and I haven't found any other source.... PM me for details or if you find a source, cuz I still need them. I did find a source for the small reducing hose that goes from the waterpump to the "T" line.

bottleworks wrote:On the backside of the block, I found two things: "1.6D" and "9." The head is uses non-hydraulic lifters and has a single oil passage in the center front. Does this help narrow down the possibilities?

My engine code is MF but your engine is very much like mine.

Edit

Ok. After looking here http://www.4crawler.com/Diesel/index.shtml#EngineSpecs it looks like MF and CF fall together in the same catagory. Probably means your motor came out of a similar car to mine.

bottleworks · Post by **bottleworks** » Mon Oct 08, 2007 10:07 pm

libbybapa wrote:TD spec. Piston cooling oil squirter equipped.

Sweet. So, (In time), I should be able to swap intake & exhaust manifolds, oil pan, and other small items and have this running a turbo...Yes?