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Author Topic: Need help in I.D. of engine  (Read 661 times)

November 06, 2017, 08:00:11 pm

outpost22

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Need help in I.D. of engine
« on: November 06, 2017, 08:00:11 pm »
Well, this is my first post and I'm not even sure this is the correct thread or not. Mods feel free to move this where it belongs.
A few years ago, I purchased a '86 Samurai with a VW diesel of unknown year and model.  After showing it to a local VW specialist, he told me it was a 1.6.  Since then he has retired and closed his shop so no more info.  This is a normally aspirated engine.  I use this rig for ranch work and trips to town (60 mile round trip). It sees no freeway use and little 2 lane highway use.  Power is moderate and mostly lacking at speeds over 45 mph.  Top speed is around 65 but takes 2 days to reach it  :P  My goal is to try to improve acceleration about 10%.  I know making it lighter would help along with less aggressive tires.  I also have adjusted the "enrichining" valve on the pump. It now makes smoke at over 80% throttle, but none to speak of under that.  The previous owner had it set much richer and it bellowed black smoke, but had more power.

I was hoping someone here could help me determine its approximate year, if it's a 11mm head model or not, and any other info you might share.  I am not looking to turbo (yet) it but am interested in sending the pump to Giles if it would be worth it.  Another option is to replace this engine with a turbo diesel.

Thanks in advance for any info.










Reply #1November 07, 2017, 03:02:10 am

vanbcguy

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Re: Need help in I.D. of engine
« Reply #1 on: November 07, 2017, 03:02:10 am »
Well, this is my first post and I'm not even sure this is the correct thread or not. Mods feel free to move this where it belongs.
A few years ago, I purchased a '86 Samurai with a VW diesel of unknown year and model.  After showing it to a local VW specialist, he told me it was a 1.6.  Since then he has retired and closed his shop so no more info.  This is a normally aspirated engine.  I use this rig for ranch work and trips to town (60 mile round trip). It sees no freeway use and little 2 lane highway use.  Power is moderate and mostly lacking at speeds over 45 mph.  Top speed is around 65 but takes 2 days to reach it    My goal is to try to improve acceleration about 10%.  I know making it lighter would help along with less aggressive tires.  I also have adjusted the "enrichining" valve on the pump. It now makes smoke at over 80% throttle, but none to speak of under that.  The previous owner had it set much richer and it bellowed black smoke, but had more power.

I was hoping someone here could help me determine its approximate year, if it's a 11mm head model or not, and any other info you might share.  I am not looking to turbo (yet) it but am interested in sending the pump to Giles if it would be worth it.  Another option is to replace this engine with a turbo diesel.

Thanks in advance for any info.









1.6NA which probably won't live too long with its timing belt cover missing. The timing belt is supposed to be enclosed, not exposed to any dust / dirt / mud / grit / sand / birds that might come its way.

Year is somewhere around the early '80s. Exact year is hard to tell. Pull the valve cover and everything will become much clearer. It appears to be a mechanical head block from what I can see (though the stuff I'm looking at is obstructed by the rad hose) which would make it early 80s and almost certainly 11mm. Appears to have a diaphragm style vacuum pump which suggests early too. Guessing it's a 107 pump based on the other stuff I can see. If I were looking for parts I'd assume 81-82.

There will be an engine code stamped on the block too though there's a fair bit of overlap within the same code range.

Good candidate for an AHU or 1Z with a mechanical pump assuming the rest of the running gear is sound. I wouldn't attempt to hop up what's in there now beyond playing with the pump settings.

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« Last Edit: November 07, 2017, 03:13:55 am by vanbcguy »
Bryn

1994 Jetta - AHU M-TDI - Jezebel Jetta
2004 Jetta Wagon - 1.8T - Blitzen

Reply #2November 07, 2017, 10:10:52 am

outpost22

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Re: Need help in I.D. of engine
« Reply #2 on: November 07, 2017, 10:10:52 am »
Thank you.  Your info is very helpful.  Can you tell me what AHU & 1Z mean?  New terms for me.   Since I bought this "as is" for a good price (4 years ago) , I tried to set a baseline and replaced all fluids, timing belt (sans cover), water pump, hoses, radiator, and filters.   It also had a compression test and all cylinders were in spec.  It also got a new rear main seal and clutch installed  after I bought it.  It runs strong and the Sammy is in A1 shape as far as running gear.
I realize it originally came with a timing cover, but it was missing when I bought it and have no idea where to get one. However this belt has lasted 4 years so just lucky I guess.  It would help to have a part number for it and a source for old VW parts since our local one closed.
« Last Edit: November 07, 2017, 01:38:22 pm by outpost22 »

Reply #3November 07, 2017, 02:33:10 pm

vanbcguy

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Re: Need help in I.D. of engine
« Reply #3 on: November 07, 2017, 02:33:10 pm »
Best bet for the timing cover is to post in the Classified section here saying you're looking for one. Another member likely has a used one around.

A timing belt event on that engine would likely be the end of it - while the 11mm blocks are ok in service they often crack when trying to replace head bolts. A $50 used cover potentially saves you hundreds if not thousands. Yes, you've been lucky so far!

AHU and 1Z are engine codes for early TDI engines, ones that would have come in a late 90s Jetta or Passat respectively. They're about double the power of the 1.6NA stock and will get about 20% better fuel economy. I'd run what you have if you're happy with the performance though, until such time that it's worn out or otherwise fails you.

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« Last Edit: November 07, 2017, 02:41:21 pm by vanbcguy »
Bryn

1994 Jetta - AHU M-TDI - Jezebel Jetta
2004 Jetta Wagon - 1.8T - Blitzen

Reply #4November 07, 2017, 09:49:49 pm

RustyCaddy

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Re: Need help in I.D. of engine
« Reply #4 on: November 07, 2017, 09:49:49 pm »
If you get the valve cover off you could check the head bolts pattern.  Early 1.6 engines had 11 mm hex socket head bolts while 12mm bolts are triple squares IIRC
« Last Edit: November 08, 2017, 07:07:44 pm by RustyCaddy »

Reply #5November 08, 2017, 07:33:59 pm

fatmobile

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Re: Need help in I.D. of engine
« Reply #5 on: November 08, 2017, 07:33:59 pm »
Upper timing belt cover kind of depends what lower cover you have for it to mate to.
 The intake says early MK1, 1.6 so you'd need that upper timing belt cover if the lower cover matches it.
 Curious what the letter on the end of the head part number is.
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Reply #6March 13, 2018, 07:37:03 pm

outpost22

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Re: Need help in I.D. of engine
« Reply #6 on: March 13, 2018, 07:37:03 pm »
Well thanks to a board member, I did get an upper timing cover in place to go with the lower. It required modifications due to an alternator placement in this application. 
Since opening this thread I also had Giles build a pump for it and wow what a difference in performance. I can carry one taller gear in corners up my long climbing road home how.  Glad I didn't turbo this after all. Not needed now for my goals.
My current question is where can I find this flexible black fuel hose (see finger pointing in picture)?



All I can find locally is 3/16" fuel hose and it is too large. I would guess that the inside diameter of the needed hose must be about 4mm.  These are the return fuel hoses off the top of the injectors. I had to safety wire them temporarily as they are old and leaking.
Thanks for pointing me in the right direction.

Reply #7March 14, 2018, 12:03:37 am

ORCoaster

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Re: Need help in I.D. of engine
« Reply #7 on: March 14, 2018, 12:03:37 am »
You should be able to replace those small hoses with clear line like they use on motorcycles.  That is what most of us do.  Or you can check AutoHausAZ for it or any of the local auto parts places.  I think it is fairly common.  It is a metric diameter hose though. 

Here are links from PartsPlaceInc.  Don't have to buy it here but they had good pictures. 

https://www.partsplaceinc.com/vw-3-5mmmm-fuel-or-vacuum-line-3607.html
https://www.partsplaceinc.com/vw-5mm-fuel-or-vacuum-line-3609.html
https://www.partsplaceinc.com/vw-7mm-fuel-or-vacuum-line-3610.html
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Reply #8March 14, 2018, 10:14:30 am

outpost22

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Re: Need help in I.D. of engine
« Reply #8 on: March 14, 2018, 10:14:30 am »
Thanks. I checked 3 auto parts places here with no luck.  3/16" was all they had and it was too big.
I may have to go the route you linked here.

Reply #9March 14, 2018, 09:48:29 pm

ToddA1

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Re: Need help in I.D. of engine
« Reply #9 on: March 14, 2018, 09:48:29 pm »
I see plenty of people use 1/8Ē clear vinyl from the hardware store. Itíll last about a year, before it needs replacement, but itís cheap and readily available.

Iím actually using 1/4Ē vinyl for the pump feed. PO had some of it with an engine I bought and I decided to use it. Itís been fine, but itís discoloring.

-Todd

Reply #10March 14, 2018, 10:51:08 pm

libbydiesel

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Re: Need help in I.D. of engine
« Reply #10 on: March 14, 2018, 10:51:08 pm »
https://www.mcmaster.com/#5549K31 for the small lines at the injectors. 

https://www.mcmaster.com/#5549K34 for the supply.

That will last a lot longer than a year.  Great stuff.

Napa also sells black 1/8" ID 1/4" OD fuel line last I checked.   
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