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Author Topic: M-tdi on AFN engine in Golf 1  (Read 16710 times)

Reply #15July 25, 2017, 06:23:20 pm

vanbcguy

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Re: M-tdi on AFN engine in Golf 1
« Reply #15 on: July 25, 2017, 06:23:20 pm »
Oh actually re: stock nozzles - the 12mm pump head in the LT pump might not work well with nozzles that small. That's a lot more pump than the 10mm one the nozzles were originally mated with.

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Bryn

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

Reply #16July 25, 2017, 06:46:51 pm

libbydiesel

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Re: M-tdi on AFN engine in Golf 1
« Reply #16 on: July 25, 2017, 06:46:51 pm »
Stock nozzles with a new 12mm pump can result in the plunger seizing.  BTDT.

Reply #17July 27, 2017, 04:34:54 am

LucasMolen

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Re: M-tdi on AFN engine in Golf 1
« Reply #17 on: July 27, 2017, 04:34:54 am »
Once again, thank you for your time and effort in helping a new guy 'get it'.
Sadly the tool on the Garret site is offline for maintenance. So I'll have to wait a little until they put it online again. This might take days or months :(

Could you suggest some reading material regarding selecting appropriate nozzles? Or is this basically a trial and error proces? :P
I feel a little stupid because I have to depend on this community to get a place to start my search. I hope I can contribute something valuable after my initial learning stage.
I'll keep reading in the meantime.

From what I get from the thread thus far is that:
- Turbo needs changing
- nozzles need changing
- pump needs changing
If I need to change these anyway, would it be much more expensive to shoot for 200hp compared to 150? The previous owner already put an upgraded sachs clutch in place that has done 500km, so that should hold up for a while. If I can get more for more or less the same price I would obviously like to get value for money. Because I am building the block outside the car it doesn't matter if it takes longer to complete it. There seems to be a lot of difference in turbo prices, so I'm hoping to be able to get a good deal when I decide on what I'll use. Is using a second hand turbo doable or does that usually give more problems than it solves?

Reply #18July 28, 2017, 06:06:59 pm

vanbcguy

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Re: M-tdi on AFN engine in Golf 1
« Reply #18 on: July 28, 2017, 06:06:59 pm »
Your nozzles are  probably due to be changed anyhow, they're good for about 100,000 miles / 160,000 km. Unless the engine you're using is way below that they are something you'd need to do anyhow.

150-170 hp can be safely done on stock internals. 180+ upgraded rods and pistons are recommended. 200+ I'd say they're required.

A rebuilt turbo is fine, I'd avoid straight up used. Rare for a turbo that's working fine to get yanked, most people upgrade when they fail.


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Bryn

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

Reply #19July 30, 2017, 04:52:25 am

LucasMolen

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Re: M-tdi on AFN engine in Golf 1
« Reply #19 on: July 30, 2017, 04:52:25 am »
Thanks a lot for that info. I think 150/160 hp is a great goal to shoot for. Knowing that can safely be done on stock internals with a reasonable amount of reliability gives me a more concrete outline for a plan. I am ging to check wat type of nozzles would be appropriate. I would like to run of by you guys before buying. Do you have a specific type you would recommend at this power level?

Reply #20July 30, 2017, 08:25:29 pm

vanbcguy

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Re: M-tdi on AFN engine in Golf 1
« Reply #20 on: July 30, 2017, 08:25:29 pm »
There's really only a couple of options. I'd recommend sending your injectors to DBW (http://www.dbwllc.net/), just tell him what you want power wise and he'll set up the injectors appropriately. There aren't a lot of places out there that are actually qualified to work on the two stage injectors used on TDIs.

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Bryn

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

Reply #21August 02, 2017, 08:43:26 am

BGA

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Re: M-tdi on AFN engine in Golf 1
« Reply #21 on: August 02, 2017, 08:43:26 am »
Canīt he use turbo from  90 HP AHU? Only differens to 110 hp AFN is the change to VNT on this motor.
Injektors. I asked that question to Dieselmeken/Lindgren. His answer was PP520.
All abow from memory, dont have my own computer with me on holliday.

What spring  do we need to swapp to, to get the rev.limit to 5000 RPM ? Colour/number?
Bo Gunnar

Reply #22August 02, 2017, 11:33:15 am

vanbcguy

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Re: M-tdi on AFN engine in Golf 1
« Reply #22 on: August 02, 2017, 11:33:15 am »
The AHU turbo can be used, sure. It's asking a lot of it to do 150+ HP though.

Dieselmeken would be an excellent place to have injectors fitted with new nozzles.

Not sure what the stock governor in the LT pump even looks like - they would be a good question for Dieselmeken too.

Sent from my LG-H873 using Tapatalk

Bryn

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

Reply #23August 10, 2017, 12:48:47 pm

LucasMolen

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Re: M-tdi on AFN engine in Golf 1
« Reply #23 on: August 10, 2017, 12:48:47 pm »
So I bought the AFN engine, cleaned it up and startedcleaning it.



Then did a compression test. The first line was my own fault. The next are (in order) cylinder 2-3-4-1.
New these engines are between 25 and 31 bar with 19 being too low.



Then took it apart. Didn't do the front yet. Time was up for that day.



But it did have a new sachs clutch as advertised. New alternator and new starter.
I got a pedalbox and Ecu with immobilizer delete and swap mounts for a swap into an mk1 golf with it. Only paid 300 euros. Thats definitely a good deal.
Now the powersteering pump, turbo, diesel pump, pedalbox and ecu will be put up for sale. When I get some money ill start looking for the LT pump for my swap.

I plan on using an intake manifold from darkside development. I might use the stock exhaust manifold en make an adapter for a turbo.
Do you guys have experience with this?

Reply #24August 10, 2017, 12:51:29 pm

LucasMolen

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Re: M-tdi on AFN engine in Golf 1
« Reply #24 on: August 10, 2017, 12:51:29 pm »
Im sorry for the picture size. I havent figured out how to change it yet. Can you see what the pully lying on the forklift is for? I got it with the engine, but it was already of when I found it.

Reply #25August 15, 2017, 07:33:57 am

LucasMolen

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Re: M-tdi on AFN engine in Golf 1
« Reply #25 on: August 15, 2017, 07:33:57 am »
BGA, can you tell me what downpipe from the turbo you used in your pictures on the first page?

Reply #26August 25, 2017, 05:33:45 am

LucasMolen

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Re: M-tdi on AFN engine in Golf 1
« Reply #26 on: August 25, 2017, 05:33:45 am »
I bought a custom dieselpump from a Dutch pump maker. The basis is an Iveco Daily pump. Currently it has a 12 mm plunger and can provide fuel up to 6000 rpm. The last car it was on made 265 hp and should be more than sufficient for my purposes.

Can someone provide me with the ALH sprocket part number?

Reply #27August 27, 2017, 03:43:50 pm

LucasMolen

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Re: M-tdi on AFN engine in Golf 1
« Reply #27 on: August 27, 2017, 03:43:50 pm »
So, now that the pump problem is sorted I'm looking at turbochargers again. I got some recommendations earlier in this thread, but I want to de the math for myself. The garret turbo advisor is down right now. Tima to look at compressor maps again

Reply #28August 31, 2017, 09:29:26 am

beichMTDI

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Re: M-tdi on AFN engine in Golf 1
« Reply #28 on: August 31, 2017, 09:29:26 am »
I'm actually at the point of determining turbos for my MTDI build as well. I've looked at everything from K03/K04 hybrids to the older K14 and even have considered (and may still do in the future) a VNT17/22 with a custom mechanical vane control. I know it was mentioned earlier on here, but so far from all the reading and research I've done the GT2052 seems to be a great fit for a 140-200+ hp MTDI build. People seem to be running them at 25 psi consistently without any problems and unlike some of the older K14 and K24 turbos it doesn't seem to be a heat pump. I've heard/ read too that it spools real good and holds its own at high rpm. The price is also pretty decent compared to VNT options as well.

The 2052 is currently what I'm going to be using. The only issue I've seen so far is there isn't really good exhaust manifold option for this turbo. There are adapter plates out there that allow you to fit it to a AHU/1Z stock manifold. It also looks like you can find the 2052 with a T2/T25/T28 compressor inlet/flange that would allow you to use a T25 manifold (though there seems to be "speculation" among the forums that the T25 manifold may have to much volume compared to stock manifolds and could decrease spool time- I'd love to see some numbers proving this because otherwise this manifold would be a pretty simple option). Not sure what others who are running this turbo have done but it is something to consider.

Good luck with the build man! Looking good so far!
1982 Mk1 4 door 1.6 IDI 4 speed, all stock, daily driver.

1981 Mk1 2 door project car soon to be MTDI (ALH)
Build Blog: https://beichmtdi.wordpress.com/

Reply #29September 02, 2017, 04:50:18 pm

damac

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Re: M-tdi on AFN engine in Golf 1
« Reply #29 on: September 02, 2017, 04:50:18 pm »
its taking me forever to do my mtdi project.  i wish i was as smart as other people around here and/or had somebody near me to get some paid help.  it ticks me off because i have the space, tools and money.  when i first started i thought i could just buy vw parts and tinker things together.  you kind of can but i don't have crap for junkyards around me so its been hell getting parts.

i am in the same boat turbo wise.  most people that answered my questions were saying the holeset was the turbo to get bang for the buck gains over stock levels.  i figured thats what i was going to do with some fresh better injectors when the time comes.

im stuck right now just getting the engine in right now and mounting and timing the rover pump correctly :)  then i will have a shell that just needs a little wiring, all the suspension and breaks have been done, etc.  once i get engine in i will see whats up with ac lines.  then i can move on to the turbo, etc. after fitting shifter in the tunnel.
1985 turbo diesel jetta