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Jetta 2.5 se conversion?
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vodo1976
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PostPosted: Wed Jul 30, 2025 4:42 pm    Post subject: Jetta 2.5 se conversion? Reply with quote

Someone just wrecked their Jetta 2.5 se near my house
Will that engine fit into my 86 Westy?
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MarkWard
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PostPosted: Wed Jul 30, 2025 5:14 pm    Post subject: Re: Jetta 2.5 se conversion? Reply with quote

I had to google it. Looks to be an inline 5 cylinder. Owners have installed the Audi version of that engine. Maybe slight trimming. I recall reading there was a South African Vanagon that had a 5 cylinder new.

Probably not a weekend project, but with skills, time, and money, I’m sure it’s possible.
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OlisGarage
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PostPosted: Wed Jul 30, 2025 6:35 pm    Post subject: Re: Jetta 2.5 se conversion? Reply with quote

Yes it will, but there are no kits. Here is a thread where user kdj just recently did this. It’s a very clean swap. I’m sure he will chime in, but it took some fabrication skills. He did a great job.

https://www.thesamba.com/vw/forum/viewtopic.php?t=...p;start=40
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vodo1976
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PostPosted: Wed Jul 30, 2025 7:45 pm    Post subject: Re: Jetta 2.5 se conversion? Reply with quote

Awesome. Thanks for the link.
Gotta figure out if I need the diesel bell housing.
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danfromsyr
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PostPosted: Thu Jul 31, 2025 4:47 am    Post subject: Re: Jetta 2.5 se conversion? Reply with quote

No you don't use the diesel 50* bellhousing
you use a Kennedy Adapter plate.

and some DIY fabrication.
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Kdj
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PostPosted: Thu Jul 31, 2025 5:36 am    Post subject: Re: Jetta 2.5 se conversion? Reply with quote

Yes the 07k from a 2.5 jetta will fit in a vanagon.
Image may have been reduced in size. Click image to view fullscreen.


It will take some fabrication. I posted what I did in the earlier linked thread.
Also suggest you read Pchills thread on Honda k-24 swap. His excellent skill is what inspired me. There are a couple of other k-24 threads also.
https://www.thesamba.com/vw/forum/viewtopic.php?t=766259&highlight=k24

The biggest hurdle is the front timing cover. I opted to raise my engine cover but have since learned of a better solution. The audi DAZA found in RS3's has a timing cover that would solve this problem pretty easily. Then its the intake manifold, again aftermarket solutions are available or just keep it stock.

Got more then 2000 miles so far and am very happy. Torque is your friend when trying to push a brick down the road. This engine has it. Maybe not as much as a diesel, but a big jump over the old 1.8 8v that was in my van when I got it.
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vodo1976
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PostPosted: Thu Jul 31, 2025 7:06 am    Post subject: Re: Jetta 2.5 se conversion? Reply with quote

I think you mentioned that the conversion cost you about $5,000 using your own labor.
Does that include the cost of the engine?
What are the major costs/parts?
Also, can I stick with my stock transmission?
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vodo1976
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PostPosted: Thu Jul 31, 2025 7:34 am    Post subject: Re: Jetta 2.5 se conversion? Reply with quote

I think you mentioned that the conversion cost you about $5,000 using your own labor.
Does that include the cost of the engine?
What are the major costs/parts?
Also, can I stick with my stock transmission?
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vodo1976
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PostPosted: Thu Jul 31, 2025 7:38 am    Post subject: Re: Jetta 2.5 se conversion? Reply with quote

Oh man. This looks like it may be over my skill and commitment level.
Might just need to find a conversion that has a comprehensive kit.
I can do basic welding (MIG) and some electrical work, but that’s about the extent of my skill level.
Plus I can barely fit my van in my tiny over-stuffed garage!
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Kdj
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PostPosted: Thu Jul 31, 2025 7:57 am    Post subject: Re: Jetta 2.5 se conversion? Reply with quote

There's a link to a spreadsheet with cost brake down in the 07k thread. I'm just guy in his garage also, so don't underrate yourself. Though do have access to some equipment at work there really isn't anything that can't be done with a mig welder and angle grinder. If you want it you can do it! But also much respect a man who know his limitations.
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