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TDI Conversions Discussions on converting non TDIs into TDIS. More general items can be answered better in other sections. This is ideal for issues that don't have an overlap and are very special to swaping engines.

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Old August 26th, 2010, 09:57   #1
Reddok
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Default Jeep Liberty TDI Conversion

I bought my first VW back in March - a 2000 Jetta TDI, I got a good deal on it because it had 'issues'. I did some reading here before I bought it, so I knew I could probably fix most of them. I ended up replacing the turbo, changing the timing belt - made all the tools from the info available on the site and a few other basics like changing the filters.

Needless to say the car runs great - and the fuel economy was amazing. Much better than the GMC Envoy I got rid of. BUT - the wife needed an automatic, so this car is a 01M so no towing for me. This is a bit of a problem as I have a boat and a utility trailer I like to use, so the hunt was on for a second vehicle that I could tow with.

But I was hooked on the TDIs fuel economy.

So I wanted something:
- Diesel (30mpg)
- Had to seat 4
- Had to be able to tow (possibly a 3000lb pop-up too)
- Around $5-10k

And I prefered to have:
- 4x4
- Something I could take off roading
- A real transfer case with low range (No Escape Hybrids)
- Airbags

Too bad the Toyota Hilux wasn't available here. The Liberty CRD was a good choice, but they were only made for 2 years and were still pretty expensive. And they only get 20-25mpg.

So when I was looking at CRDs and found a really good deal on a 2002 Liberty Renegade that had some major drivetrain issues, I decided to convert it. Unfortunately there isn't anyone who has done this swap yet so it's going to be a lot of trial and error.



I saw Babyrattlers swap and thought his adapters might work for me, but the Wrangler AX15 he is using has the starter on the passengers side and the Liberty has the starter on the drivers side. So it looks like I'm on my own for a bellhousing and flywheel adapter.

I had already ditched the automatic that was in it and installed a NSG370 6 speed out of a 2005 Liberty.





I found a guy that had a complete running 2002 TDI parts car and he let me take whatever I wanted for a pretty good price. Took me 3h to remove the engine and tranny and another 3 hours just to get all the wiring - it filled a blue box when it was all said and done.

So far I've made a temporary bellhousing adapter out of 1" square steel tube so I could mock up the motor mounts and check fit and angle. The starter being on the drivers side posed a bit of an issue and one of the wings on the back of the oil pan had to be removed in order to get it to fit.

It looks good sitting in there! But the vacuum pump hits the firewall and I'm going to have to clearance it, but at least it clears the front diff.

Still a ton of work ahead...

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Old August 26th, 2010, 11:53   #2
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Jeep made a Liberty diesel.
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Old August 26th, 2010, 12:02   #3
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yea they did its basically a sprinter engine
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Old August 26th, 2010, 12:12   #4
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The Libby is HEAVY, and it will be very slow with the 1.9 TDI. You may also be disappointed with the mileage. It will be better than the V6, but you'll be lucky to get better than 30mpg highway.
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Old August 26th, 2010, 12:16   #5
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Quote:
Originally Posted by Antsrcool View Post
yea they did its basically a sprinter engine
The Liberty has a VM Motori 2.8 liter diesel. Sprinters have Mercedes engines.
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Old August 26th, 2010, 12:20   #6
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hmmmmm i was given bad info then
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Old August 26th, 2010, 12:32   #7
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Hey, I think it's an awesome swap. He stated some good points about the Liberty only being available for 2 years and the fuel economy isn't the best. As for the TDI's fuel economy, I'd bet he won't have a problem hitting 30+mpg. I'm not sure about the actual weight of the vehicle, but it can't be as heavy as my Vanagon Westfalia and is difinitely more aerodynamic . Pushing the van hard on the freeway the lowest I saw for economy was 29mpg.

Make sure the gearing is good and puts the engine's rpms into the economy range between 2300-2700 rpms.

Looking forward to more picts and updates
Jon
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Old August 26th, 2010, 14:51   #8
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Quote:
Originally Posted by jjordan11 View Post
...I'm not sure about the actual weight of the vehicle, but it can't be as heavy as my Vanagon Westfalia and is difinitely more aerodynamic .
The curb weight for a 2002 Liberty 4WD is over 4,000 lbs.

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Old August 26th, 2010, 15:04   #9
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Interesting swap, good luck with it and please keep the thread updated with your progress.

We had a CRD Liberty that typically logged mileage within the range you indicate. Apparently the ones tuned by greendieselengineering are getting around 30 mpg.
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Old August 26th, 2010, 15:40   #10
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Quote:
Originally Posted by jjordan11 View Post
Hey, I think it's an awesome swap. He stated some good points about the Liberty only being available for 2 years and the fuel economy isn't the best. As for the TDI's fuel economy, I'd bet he won't have a problem hitting 30+mpg. I'm not sure about the actual weight of the vehicle, but it can't be as heavy as my Vanagon Westfalia and is difinitely more aerodynamic . Pushing the van hard on the freeway the lowest I saw for economy was 29mpg.

Make sure the gearing is good and puts the engine's rpms into the economy range between 2300-2700 rpms.

Looking forward to more picts and updates
Jon
If you have driven a Liberty CRD, it really gets up and goes. A TDI with half the torque will be a disappointment. If you drive a Vanagon, you are probably ok with the performance of the TDI in the Liberty. I know I'd be fine with a TDI in my Toyota 4x4 pickup, but it's light, just under 4000lbs.

Liberty curb weight is more than 4500lbs, but it looks like a Westfalia can be more than 5000lbs. So if you drive it slow, you might get more than 30mpg, but it will be comparable to a CRD (obviously; same weight, drag and aerodynamics). Engine efficiency TDI vs. CRD is probably similar.
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Old August 26th, 2010, 16:21   #11
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Should be about 2400rpm in 6th at 65mph. My curb weight should be under 4000lbs when it's all done. Stock crd motor puts out 160hp and 295tq. I'm planning on a big intercooler, exhaust, pp502s and a tune to get the tdi up into that range.
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Old August 26th, 2010, 17:21   #12
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4000lbs?!?! How will you get 500lbs out of the Jeep?

Yes, a good tune and injectors should get you in the right range to motivate it. It really sounds like a cool conversion.
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Old August 26th, 2010, 19:28   #13
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Quote:
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4000lbs?!?! How will you get 500lbs out of the Jeep?
.
Dropping the auto and v6 was good for a 300lb weight savings. Pulled off 50 lbs of running boards too. Puts it at roughly 3900lbs.
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Old August 26th, 2010, 19:46   #14
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Good looking Liberty! You have a long way to go but I think it will turn out great. I'll hopefully be able to give you some data from my project once I get it on the road so you'll know what to expect. Keep on posting and we'll be here to watch. Good luck!
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Old August 26th, 2010, 20:08   #15
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Definitely subscribed to this very cool swap.

Get rid of that light bar if you want to improve FE.
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