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Author Topic: 98 jetta tdi into a 84 jetta td  (Read 6352 times)

February 20, 2011, 12:10:30 am

1life2live

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98 jetta tdi into a 84 jetta td
« on: February 20, 2011, 12:10:30 am »
I am looking for some advice on swapping a 2000 jetta tdi into an 84 mk1 jetta. I have found a motor complete with wiring harness ecu throttle pedal, ignition, and cluster with 236,000 miles and the price seems fair. I tried searching but couldnt get the exact answer i was looking for. I know that i will have to mount the passenger side mount to the new engine from my old as the new engine doesnt use it in the new car but the holes for the mount are there so i have read. Once i do that will the turbo clear because if i was reading right people are saying it does not fit?

Also, i do not want to use the cluster or ignition and i know this is ecu has an emobilizer and you need to use the ignition and cluster but the guy who is selling it says i can have the ecu re-flashed to do away with the emobilizer then i can just wire it up using my stock gauges and key.

I have a friend who used the early tdi out of the mk3 and it went right in without any problems and is still running the 020 trans. Will i be able to do the same and run the 020 until i decide to change it out? Thanks for any advise in advance and if anyone has pics of an alh in a mk1 that would be great as well.
« Last Edit: April 27, 2011, 01:33:43 pm by 1life2live »



Reply #1February 20, 2011, 12:41:23 am

CRSMP5

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Re: alh tdi into mk1 jetta
« Reply #1 on: February 20, 2011, 12:41:23 am »
well honestly.. look at 8v of furry tdi post.. lots of info to think about on tdi swaps into mk1 jetta there..

now i assume you plan to weld and so on.. you almost need to make the mk4 pass side mount fit... stock no way its happening.. the mk3 swap IMO is much easier.. can fab up stock mounts to fit (no welder needed).. or mk3 ones even (IMo best for vibration free and such.. but need to weld and fab)...

i will not say anything abt the alarm.. but i have a bad feeling you will find some issues by the time all is done and said..

could build it into a m and eliminate all the electronics.. the easiest situation/solution to alarm and wiring it up..

id also plan to use the 02a.. the 020 if gone thru will work.. but by the time your all done and stuff.. might as well do the 02a.. lots of discusstion on this in the other thread..

Reply #2February 22, 2011, 04:02:52 pm

BigVWman

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Re: alh tdi into mk1 jetta
« Reply #2 on: February 22, 2011, 04:02:52 pm »
There are many threads in various places, Actually vortex has truck done by Mrdave that was nearly the same as your talking alh motor with 020 trans. That would be the most similar off the top of my head and he has many pictures and a good writeup on it. There are others on tdi club and such. The immobilizer can be programmed out of the ecu without much hassle by the right person and the 020 IMO is fine unless you plan on boosting power output considerably. Everyone says 02a's and 02j's are stronger who is to really say. Mr Dave will say the 02a style is more durable but many years after his swap he is still running an 020 iirc the original 020 he put in. The 02a style does have better gearing for tdi's. You can hybrid your 020 and get close, Mrdave did a vwracing 3.42 ring and pinion, in my tdi cabriolet i have a 3.67 with the 0.71 fifth from an ff. I also have 16" tires as they play a role in your final rpm. Either way the mounts are out there and available for a few bucks or you can make your own.I also used my mk1 cluster and bought an ebay tach signal adapter. Just take your time and keep looking three steps ahead! It would be best to have the donor car and swap car in close proximity during the swap, it can help jog the mind a bit here and there! The turbo issue i have seen some posts on tdi about it but not sure exactly what went wrong it was a linkage issue if i recall correctly.
« Last Edit: February 22, 2011, 04:06:10 pm by BigVWman »
Tim
83 rabbit shell 92 cabby tdi conversion, 91 cabby aba conversion, 87 cabby,  87 gti,  01nb tdi new project,00 1.8t nb, 98 ranger,92 f150 flareside(its pink) 97 cabrio and a 00 cabrio!

Reply #3February 22, 2011, 09:00:07 pm

8v-of-fury

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Re: alh tdi into mk1 jetta
« Reply #3 on: February 22, 2011, 09:00:07 pm »
The only real downside I have found through my extensive research on this topic, is that the 020's have a lousy Differential. All that new found torque will be horrible in less than perfect traction conditions.. Can anyone say One-Wheel-Peel? ;)

CRSMP5 has fortified an 020 behind a higher powered engine (Similar to that of the TDI I think) and I recall him having issue with it backing bolts out inside the trans due to the torque exerted on it.

The 020 will work, and just fine too. But you are not wanting to swap a TDI in so you can be moderate and slow :P.. you want to feel that power, and soon you will chip it and throw injectors at it.. The 150ft.lbs is already near the 020's top end of handle-ability lol (yah i make words up) ;).

Reply #4February 23, 2011, 08:36:35 am

BigVWman

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Re: alh tdi into mk1 jetta
« Reply #4 on: February 23, 2011, 08:36:35 am »
Very true. It is just an easy way to retain stock cluster and make swap simpler. The weak points on the 020 are more readily apparent when your running them in a 3000lb car with junk in it and adding 150lbft torque! In the mk1 being just over 2000lbs it may last significantly longer, well everything except that one tire!
Tim
83 rabbit shell 92 cabby tdi conversion, 91 cabby aba conversion, 87 cabby,  87 gti,  01nb tdi new project,00 1.8t nb, 98 ranger,92 f150 flareside(its pink) 97 cabrio and a 00 cabrio!

Reply #5April 27, 2011, 08:48:17 am

1life2live

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Re: alh tdi into mk1 jetta
« Reply #5 on: April 27, 2011, 08:48:17 am »
well i bought a 98 jetta tdi the other day as a donor car for the motor and transmission now i jest need to find the time to swap it over. I know the easy way wouldbe to use the 020 but like what was already stated i want to use all of my potential power and im sure at some point i will start modding the new engine. What is involved in using the cable shift trans other then routing the cables and mounting the shifter box? Also the previous owner said the trans doesnt like to always go in to 1st or 5th i have driven it and sometimes you have to play with the shifter for a second to get it in first and it acts like it goes in 5th but i havent driven it far enough to make sure. Is there adjustments on the cables because the trans itself feels fine.

As far as wiring goes what do i need to bring in and wire in to the dash? Am i going to have to remove the dash to wire it? I know the motor will drop right in i just want to be ready for the rest and make sure i have everything i need before i get started.

Reply #6April 27, 2011, 09:36:09 am

8v-of-fury

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Re: alh tdi into mk1 jetta
« Reply #6 on: April 27, 2011, 09:36:09 am »
ok well you got a 98, thats good. 1Z/AHU motor, much easier to swap. Your right, it'll be better now to go with the 02A transmission attached to it. Nothing more to the shifter ox than mounting it, love the cable design they can be in other configurations, and still work great. I had the same problem on my 98 that i drove before i tore it down, shifting was a little sloppy. Now that i have all the pieces in my garage, there is zero play in the shifter box or cables themselves.. so it must be the bushings on the trans selector itself that either need a change or adjustment.

As for the wiring, what is your end goal? Are you wanting to run the 02A and the cluster? What I am doing is running the mk3 fusebox above my original mk1 fusebox to take care of just the engine side of things, and let the original fusebox still handle headlights, heater fan, rear window defrost and so on. At that point you just need to swipe the entire engine bay harness, feed it through the firewall and hook it up to the back of the box. put a jumper wire between two pin on the box for cluster power. and then steal the fusebox trigger from the 84 fuse box (So both fusebox turn on when you turn the key) and its fairly simple. Use your original wire to tell the starter to turn and you bypass the clutch switch and other wiring shenanigans. You might have to remove the dash to fit the mk3 cluster.. I don't know haven't got to this part of my swap yet.. next week i'll find out though. Taking a week off work to button it up :D

Now the motor will physically drop in, but the mk1 motor mounts, at least two of them need to be used. You have to take the timing belt off and cut the little back plating away so the passenger side gasser mount can be bolted in. Front mount will bolt up to the engine. The driver side and rear motor mount will take some fab, no too much crazy stuff just a little tweaking.

Reply #7April 27, 2011, 10:05:41 am

1life2live

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Re: alh tdi into mk1 jetta
« Reply #7 on: April 27, 2011, 10:05:41 am »
Thanks for the info. I plan on using the original cluster so mounting the new fuse box and linking it to the old sounds like the best option. Do you have a build thread to your car?

Reply #8April 27, 2011, 10:15:54 am

BigVWman

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Re: alh tdi into mk1 jetta
« Reply #8 on: April 27, 2011, 10:15:54 am »
Fitting the mk3 cluster in the mk1 and making look decent is tough!
Tim
83 rabbit shell 92 cabby tdi conversion, 91 cabby aba conversion, 87 cabby,  87 gti,  01nb tdi new project,00 1.8t nb, 98 ranger,92 f150 flareside(its pink) 97 cabrio and a 00 cabrio!

Reply #9April 27, 2011, 01:33:09 pm

1life2live

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Re: alh tdi into mk1 jetta
« Reply #9 on: April 27, 2011, 01:33:09 pm »
yea it would be nice to run the mk3 cluster but i dont think it would look right and want to maintain the mk1 look so if the hoods not open you dont know theres a tdi under it.

Reply #10April 27, 2011, 10:46:45 pm

8v-of-fury

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Re: 98 jetta tdi into a 84 jetta td
« Reply #10 on: April 27, 2011, 10:46:45 pm »
Hmm well if you plan to run the mk1 cluster, and the 02a trans.. I don't know how you are going to have a functioning Speedometer.. as the mk1 is cable spun, and that 02a wont have the hole for the cable.. dunno what to do there.


Reply #11April 27, 2011, 11:40:37 pm

nathan_b

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Re: 98 jetta tdi into a 84 jetta td
« Reply #11 on: April 27, 2011, 11:40:37 pm »
I see an early corrado speedo cable in your future.

People are remaking them now, but you can get them new once again.

For use with 02a and cable cluster
81 caddy frankentd 02a, 99.9 tdi jetta, 00 golf

Reply #12April 28, 2011, 12:35:38 am

Powered by Spearco

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Re: 98 jetta tdi into a 84 jetta td
« Reply #12 on: April 28, 2011, 12:35:38 am »
I just got a cable from a B3 Passat 16V with an 02A. But it won't fit the MK1 cluster.

But if you get the speedo cable from a Eurovan that is a two piece that screws into the cluster like an MK1, then it'll work. Thats what I'm doing in my truck but using an 02J trans.
'87 Syncro Transporter Single Cab "Now TDI"
'78 Rabbit..Gas Weekend Racer
'81 Caddy..Diesel 1.6/1.9 TD hybrid 275HP 349TQ "Retired"
'90 MultiVan, 2.5 Suby Swap, Porsche Brakes
'76 Scirocco TD dragster project
'13 Golf R:. Tuned
'98 Puch G320

Reply #13April 28, 2011, 01:40:17 am

nathan_b

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Re: 98 jetta tdi into a 84 jetta td
« Reply #13 on: April 28, 2011, 01:40:17 am »
mk2 clusters are also a good looking swap into a mk1, can be ce2, and will work with later cables..
 just an idea
81 caddy frankentd 02a, 99.9 tdi jetta, 00 golf

Reply #14April 28, 2011, 10:21:58 am

1life2live

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Re: 98 jetta tdi into a 84 jetta td
« Reply #14 on: April 28, 2011, 10:21:58 am »
i have a mk2 cluster with a tach i was going to put in my car with the 1.6 and never did. Im guessing it has to be a newer cluster to work with the 02a? Where can i find the corrado cable new and what exactly am i looking for I didnt even think of this being an issue.

 

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