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Full Moon Bus Club :: Forums :: Tech Talk :: Tech Questions
 
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Jetta powered vanagon
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Moderators: TN Jed, Lickity Split, docric, sweetbus, Tom and Phaedra, Collie
Author Post
doc
Thu Mar 24 2011, 06:43PM

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How hard and how expensive is it to put a jetta engine into a bus?
doc
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busesofthecorn
Thu Mar 24 2011, 08:17PM
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Location: Toronto, ON
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Well, it depends on how you go about it, and what year Jetta your engine comes from.

The digifant Jetta (86-92?) is easiest. Later motors use a motronic FI and the cross-flow head won't fit under the decklid. If you're OK with a modified decklid then you can keep the cross-flow head, otherwise you need to swap the head for an earlier 1.8L digifant cylinder head.

To mount the engine it's easiest/cheapest to use the bearer bars and motor mounts from a diesel vanagon. They will allow you to mount the engine the same as the diesel vanagon did.

You will also need the diesel bell housing, oil pan, starter, clutch, pressure plate, dipstick, filler tube and the water hoses.

Once you have the engine in place, you can use the 86-91 digifant wiring harness and ECU/AFM to control the engine. After that, you just need to fabricate the exhaust system and throttle linkage; and you're good to go!

I have almost everything I need for my conversion; just a few more parts to gather and I'm hoping to have the engine installed this summer.
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NCBusguy
Thu Mar 24 2011, 08:20PM

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But can you stick the motor on an automatic?
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busesofthecorn
Thu Mar 24 2011, 08:41PM
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Yes, but for that you need a Kennedy Engineering adapter. I know a guy who had his inline4-powered bus converted to auto transmission by a shop in GA; he is much pleased with the end result.

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markdearing
Fri Mar 25 2011, 07:12AM
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I have been running a 92 jetta motor in my vannie now for a couple of years, works great, i used the stuff from a diesel vannie to make it fit and kept all the controls(fuel &ignition) vannie. mine is a 4 speed manual. later md

salem import service
1113 florida st
salem va 24153
540 389 8587

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GreenBus
Fri Mar 25 2011, 12:04PM

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Noticable power differnence in the conversion, as well as fuel economy?

www.HippyMotorsUSA.com
1988 Carat Wolfsburg

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markdearing
Fri Mar 25 2011, 01:46PM
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more power hell yea, little more torque and just a little better gas mileage. RPM range went up 2000 rpm. climbing what was 2nd gear hills now in 3rd. later md

salem import service
1113 florida st
salem va 24153
540 389 8587

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busesofthecorn
Sat Mar 26 2011, 02:00PM
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with a mild cam and an exhaust upgrade the 2L inline4 can run around 120HP and still deliver improved fuel economy.

The real change is the top-end power. I4's are just coming alive at 3-4K where the WBX is flattening out.
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markdearing
Sat Mar 26 2011, 02:18PM
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The top end is much better than the WBX 70-75 mph is just cruising, mine you get better gas mileage going 60-65 . I am getting ready to add the different cam to mine later md

salem import service
1113 florida st
salem va 24153
540 389 8587

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bear
Sat Mar 26 2011, 07:03PM

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Doc, I'm going to hold off on the aux air regulator, till you decide what direction you are going to go.

Good friends are like stars, you may not always see them, but they are always there.. Phil Cain 205 Old Stagecoach Rd. Easley SC 29642, 864-859-8256
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Fred
Sat Mar 26 2011, 07:19PM

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Maybe Doc will be the first moony to go with a carb system for his vgon

http://www.thesamba.com/vw/classifieds/detail.php?id=1107047

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buspor63
Sun Mar 27 2011, 08:53AM
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How plentiful are those diesel bellhousing/engine mounts/oil pans? Surely they are all in use by now. Any other mount options?

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busesofthecorn
Sun Mar 27 2011, 10:40PM
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Plentiful enough; remember that they made diesels from 82-92 in Germany. There are some people importing them and there are still US-spec parts to be found if you keep your eyes open. Plan B is to go with an adapter plate from Kennedy engineering instead of the bell housing but without the specialized oil pan you can't lay the engine over far enough to clear the decklid. But you can deform the decklid and add more foam to the mattress, I've seen that done as well.
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rastafoo
Mon Mar 28 2011, 06:48AM

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At pretty much every show I go to (Bugjam, lakeland vw classic, rare air, winterjam) there is a diesel vanagon towed in for sale. Also check your local vw club/used parts vender guy.

'73 asi riviera camper (Janis)
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'Spirit is the journey, body is the bus. I am the driver, from dust to dust.'
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markdearing
Mon Mar 28 2011, 07:34AM
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I used the early diesel mounts which had to be moved ,83 -up work without any mods. later md

salem import service
1113 florida st
salem va 24153
540 389 8587

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busesofthecorn
Mon Mar 28 2011, 10:19PM
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doc wrote ...

How hard and how expensive is it to put a jetta engine into a bus?
doc


Let me answer this a little more directly, with my own details:

COST:
Diesel bellhousing, clutch, PP, dust plate and water hoses: $170.
Bearer bars: $100
Starter: $60used, or $260 new. (I haven't bought this yet)
Pilot bearing $5.
Diesel oil pan: $40
Diesel muffler supports: $50
2L Jetta Engine: $300
Cam upgrade: $120
1.8L digifant cylinder head: Free (I traded some parts for it) Ask Mark or Ronnie for a price on this.

For the exhaust I am budgeting about $200, and I'll either use the muffler from the donor car or the muffler from my WBX, depending on my mood at the time.

So I am in so far for just a little over a grand.

How much work is it? Hard to say, as I haven't started yet. I think it'll be a little trickier than a WBX swap, as there will be some fabricating to do on the exhaust and the throttle linkage. OTOH, all the homework has already been done as there are plenty of people already running this config.

Mark, I am going to want to get some pics of your rig at EB!!!



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KMT
Mon Mar 28 2011, 11:08PM
Kooky Math Teacher

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NCBusguy wrote ...

But can you stick the motor on an automatic?



I have the Kennedy adapter kit for an automatic Vanagon sitting in my basement. I was going to go diesel, but decided not to.


Jamie Auch
Arden, NC
http://www.highcountrybusfestival.com


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markdearing
Tue Mar 29 2011, 07:48AM
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hey greg some of those prices are skeed a little , the 2.0L jetta motor is normally about $600 but was sold to you for a special reason at that cost. alos new diesel vannie clutch stuff will set you back about $300. also what cam is that and brand, autotech has a sport cam but it is $160 later md

salem import service
1113 florida st
salem va 24153
540 389 8587

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NCBusguy
Tue Mar 29 2011, 06:31PM

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PM sent Jamie
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busesofthecorn
Tue Mar 29 2011, 08:43PM
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Hi Mark,

I've spent a year already gathering parts, buying stuff mostly when I can't afford not to. I've seen whole Jetta's sell here on CL for $500; I figure I could get $200 for the remainders at a swap meet so I don't think that number is that far out of line.

I've also seen entire Diesel Vanagons go for well under $1K, in which case you could do a conversion for free, if you get a decent buck for the remainder.

The trick is to wait until the right deal comes along. You want to do it in a hurry, it's gonna cost more for sure. Tiico used to sell their kit for around $4K IIRC.



markdearing wrote ...

hey greg some of those prices are skeed a little , the 2.0L jetta motor is normally about $600 but was sold to you for a special reason at that cost. alos new diesel vannie clutch stuff will set you back about $300. also what cam is that and brand, autotech has a sport cam but it is $160 later md

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markdearing
Wed Mar 30 2011, 10:15AM
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Location: salem va
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that is right greg having time to find what you need as you can afford is the best way. I traded for all my stuff. How about that cam name and specs later md

salem import service
1113 florida st
salem va 24153
540 389 8587

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busesofthecorn
Wed Mar 30 2011, 06:35PM
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markdearing wrote ...

that is right greg having time to find what you need as you can afford is the best way. I traded for all my stuff. How about that cam name and specs later md


Hi Mark.
Maybe they were having a sale when I looked last...
Techtronics has a 260 "street" cam for $150.
http://www.techtonicstuning.com/main/index.php?main_page=product_info&cPath=2_12_54_403_89&products_id=1613

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busesofthecorn
Wed Mar 30 2011, 06:38PM
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Then this would be an excellent time to use that adapter to go with an inline4 gas engine instead of the diesel. Same bolt pattern; you just need to get the motor mounts, bell housing, etc...

KMT wrote ...

NCBusguy wrote ...

But can you stick the motor on an automatic?



I have the Kennedy adapter kit for an automatic Vanagon sitting in my basement. I was going to go diesel, but decided not to.


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markdearing
Thu Mar 31 2011, 08:03AM
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busesofthecorn wrote ...

markdearing wrote ...

that is right greg having time to find what you need as you can afford is the best way. I traded for all my stuff. How about that cam name and specs later md


Hi Mark.
Maybe they were having a sale when I looked last...
Techtronics has a 260 "street" cam for $150.
http://www.techtonicstuning.com/main/index.php?main_page=product_info&cPath=2_12_54_403_89&products_id=1613





hey greg a little better cam for $10 more http://www.autotech.com/product/camshafts/10-109-01-109.html?fromcat= later md

salem import service
1113 florida st
salem va 24153
540 389 8587

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jrunberg
Thu Mar 31 2011, 07:50PM

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markdearing wrote ...

I have been running a 92 jetta motor in my vannie now for a couple of years, works great, i used the stuff from a diesel vannie to make it fit and kept all the controls(fuel &ignition) vannie. mine is a 4 speed manual. later md


Hey! I bet that's my junk holding your engine in

Good to know that it's been put to good use. I think I found a tie bar for the side mounts... If I locate it again it'll make it's way to ya.
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