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johnj92131

86 Diesel MJ to VW TDI conversion

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Perhaps a sad end to the Comanche TDI project:  The truck was stolen from my son''s place on Thursday morning, between 3 a.m. and 6 a.m.   No word on the truck, likely too soon to expect any news.

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I wanted to jump back and offer a little insight on the turbocharger/clearance issue.  Another possible solution would be to run the manifold from a 2004-2005 Passat 2.0L TDi,  It was also offered overseas in a few other vehicles as well. I actually picked one up for about $80, and they aren't too hard to find, with the worst price I have seen was around $150.  This manifold requires the use of a flange mount style turbocharger, of which the closest to a stock size would be a GTB1749V (VNT17) which is a small upgrade for ALH engines.  They can be found with vacuum or eletronic actuators for fairly cheap and are good for up to 200hp and well past 300ft-lbs depending on tune/setup) with nice fast spool and torque peaking a bit past 2000rpm.  This is the turbo I am going to go with as it is actually fairly cheap and well proven.

Here is a picture from an ALH TDi build using a GTB1756VK 
2012-03-30_21_26_55.jpg

Installed in the guy's Jetta.
6906346346_c0a04386e2_z.jpg

Notice that the turbo sticks out essentially parallel to the ground (perpendicular to the motor) which will ideally place it in the big vast chasm of room at the top of the engine bay.  This should give plenty of room to clear the Jeep motor mounts and give a little more room to run a downpipe for the exhaust. Cost wise it can actually be cheaper than the ALH bolt on VNT17 turbo upgrade, which is usually around $800-900  I have found the GT1749V for $300-400, and toss in say $150 for the above mentioned manifold and at worse you might spend $600.  If you are chasing more power then you could use the GTB1756VK like seen in the above pictures - His car made 201hp@4700rpm and 312lb-ft@2300rpm  to the front wheels - but that turbo costs around 3 times as much.

Anyway, just thought I would toss that info out there for other guys considering this swap. :thumbsup:

I still have a ways to go before I am ready for my TDi conversion- like rebuilding the motor I picked up :redx:.  Gotta keep pace with what my wallet can provide after all.  I don't have high aspirations for mine, just around 160-180 crank hp and as close to 300ft-lbs as I can get, which can be done fairly affordably on even the 10mm injection pump (what I have).  That should move a Comanche along with ease, and definitely can't be any slower than my Renix, all while being 180lbs lighter and hopefully getting close to double the fuel economy.

Now to get back on topic a bit. Johnj92131 - I was curious about that water outlet pipe you have.  Was that made or did you find a source for it and bought it?  It wouldn't be too hard to fabricate one, but I am lazy and wouldn't mind spending money if it was cheap enough lol.

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5 hours ago, A-man930 said:

:thanks: 

 

I definitely want that turbo up and well out of harms way.  

Glad I could offer a possible solution. Just keep in mind that it will also come down to what version of the TDI you use as there are different flange patterns.  The above manifold should work on the AHU, ALH and BEW Engines. There might be others, but research if you want to use a newer engine than those.  I bought this manifold because I have an ALH waiting on a pallet.

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11 hours ago, Megadan said:

Glad I could offer a possible solution. Just keep in mind that it will also come down to what version of the TDI you use as there are different flange patterns.  The above manifold should work on the AHU, ALH and BEW Engines. There might be others, but research if you want to use a newer engine than those.  I bought this manifold because I have an ALH waiting on a pallet.

 

I also have an ALH.  Thanks again for the info!

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We got the truck back in mid October.  Full story here:  https://comancheclub.com/topic/56598-sad-end-to-comanche-tdi-project/

 

Had the damaged ignition switch replaced on Thursday.  Cost for parts and labor was $135.  Only problem is that the new ignition key does not match the doors.  Need to be careful not to lock the doors till I have the doors matched to the new ignition key.  So today I parked the truck in the rear of the yard till I get the locks changed.

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maybe this was answered, but I'm at work and didnt read all 6 pages.  I also have an ALH engine thats in a worn out 01 jetta I picked up for CHEEEAAAAAAAP.  did you custom build the trans adapter adn motor mounts or did you purchase them from coty built out of canada, they have kits for the 1.9 PD  engine, but I know mounting wise, the 2 engines are identical.  what did you do for engine management?

 

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3 hours ago, huck731 said:

maybe this was answered, but I'm at work and didnt read all 6 pages.  I also have an ALH engine thats in a worn out 01 jetta I picked up for CHEEEAAAAAAAP.  did you custom build the trans adapter adn motor mounts or did you purchase them from coty built out of canada, they have kits for the 1.9 PD  engine, but I know mounting wise, the 2 engines are identical.  what did you do for engine management?

 

 

Got the adapter from:  http://gastodiesel.tdconversions.com/adapter/

 

Here is a good thread for a quick summary of available adapters:  http://forums.tdiclub.com/showthread.php?t=494925

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