 Converting a Vanagon TB for use with 1.8 L-Jet, How I did it |
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| MrKona |
 Nov 2 2014, 08:36 PM
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#1
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Senior Member  Group: Members Posts: 597 Joined: 25-July 05 From: Santa Rosa, CA Member No.: 4,469 Region Association: None  |
There's currently a thread about using L-jet from a 1.8L engine for a 2.0 with discussion about using bigger bore throttle body from a later Vanagon.
I tried it but ran into an issue with the orientation of the flat on the shaft that engages the throttle body switch component used with L-Jet. Pictures are worth a thousand words, so here goes.. Here's the TPS and a picture of each TB with the plate in the throttle closed position. Original 1.8 L-jet on the right, Vanagon donor TB on the left. Notice the different orientation of the flat on the shafts. The flat engages a corresponding flat on the TPS. The flat on the Vanagon shaft is in the wrong position for the TPS. Attached image(s)    
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| Valy |
Nov 3 2014, 02:11 AM
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Senior Member Group: Members Posts: 1,677 Joined: 6-April 10 From: Sunnyvale, CA Member No.: 11,573 Region Association: Northern California |
Did you try to use the vanagon throttle switch?
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| MrKona |
Nov 3 2014, 09:16 AM
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#3
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Senior Member Group: Members Posts: 597 Joined: 25-July 05 From: Santa Rosa, CA Member No.: 4,469 Region Association: None |
QUOTE(Valy @ Nov 3 2014, 12:11 AM)  Did you try to use the vanagon throttle switch? No. There are two terminals on the Vanagon switch, and three on the l-jet, hence the wiring harness would need work. Didn't want to open that can of worms. |
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| Valy |
Nov 3 2014, 02:14 PM
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#4
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Senior Member Group: Members Posts: 1,677 Joined: 6-April 10 From: Sunnyvale, CA Member No.: 11,573 Region Association: Northern California |
QUOTE(MrKona @ Nov 3 2014, 08:16 AM) QUOTE(Valy @ Nov 3 2014, 12:11 AM) Did you try to use the vanagon throttle switch? No. There are two terminals on the Vanagon switch, and three on the l-jet, hence the wiring harness would need work. Didn't want to open that can of worms. Thanks! Does the bigger TB fit the rubber boot from the AFM? |
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| MrKona |
Nov 3 2014, 10:46 PM
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#5
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Senior Member Group: Members Posts: 597 Joined: 25-July 05 From: Santa Rosa, CA Member No.: 4,469 Region Association: None |
QUOTE(Valy @ Nov 3 2014, 12:14 PM) QUOTE(MrKona @ Nov 3 2014, 08:16 AM) QUOTE(Valy @ Nov 3 2014, 12:11 AM) Did you try to use the vanagon throttle switch? No. There are two terminals on the Vanagon switch, and three on the l-jet, hence the wiring harness would need work. Didn't want to open that can of worms. Thanks! Does the bigger TB fit the rubber boot from the AFM? It sure does! The beautiful thing is that the outer diameter is the same on both. Here's a picture, Vanagon TB on the left, L-Jet TB on the right. Attached image(s) 
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Posts in this topic
MrKona Converting a Vanagon TB for use with 1.8 L-Jet Nov 2 2014, 08:36 PM
MrKona I didn't want to simply make a new flat on the... Nov 2 2014, 08:44 PM MrKona So I decided to use the shaft from the 1.8 TB. Onl... Nov 2 2014, 08:48 PM MrKona So I decided the way to go was to lengthen the rec... Nov 2 2014, 09:18 PM Geezer914 Great pictures! I just picked up a 2.1L thrott... Nov 2 2014, 09:20 PM MrKona Brief intermission, and on a related note.. anothe... Nov 2 2014, 09:24 PM MrKona Five minutes of careful grinding on each side was ... Nov 2 2014, 09:27 PM MrKona And with that, I inserted the modified shaft in th... Nov 2 2014, 09:31 PM MrKona One more note, you may have noticed already that t... Nov 2 2014, 09:34 PM rick 918-S Nice work. Way to think out of the box. Nov 2 2014, 09:50 PM Dave_Darling Peen or use Loctite on the throttle plate screws. ... Nov 3 2014, 12:29 AM
MrKona
Peen or use Loctite on the throttle plate screws.... Nov 3 2014, 01:47 AM Root_Werks Really good write up and something I would have us... Nov 3 2014, 09:43 AM pilothyer Bryan Do you have the part number for this throttl... Nov 3 2014, 02:32 PM MrKona
Bryan Do you have the part number for this thrott... Nov 3 2014, 10:59 PM type47 I wonder what is the size of the TB for the 912E. ... Nov 4 2014, 06:15 AM Dave_Darling I believe that the TB for the 912E is identical to... Nov 4 2014, 10:10 AM N_Jay What about a mounting plate that picks up the TB m... Oct 1 2016, 06:25 AM jim_hoyland How was the performance improved ? Oct 1 2016, 06:41 AM rgalla9146 All of the grinding was done with the bench grinde... Oct 1 2016, 10:47 AM ClayPerrine I did this for Betty's car. I don't know... Oct 1 2016, 12:06 PM jim_hoyland
I did this for Betty's car. I don't kno... Oct 8 2016, 08:46 PM ClayPerrine
I did this for Betty's car. I don't kn... Oct 9 2016, 05:31 AM jim_hoyland
[quote name='jim_hoyland' post='2409129' date='Oc... Oct 9 2016, 06:46 AM jim_hoyland Bought a Vanagon TB today; gonna see how this work... Oct 2 2016, 07:27 PM 396 Clay,
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How about trying one from an Alfa spider from 198... Oct 9 2016, 07:44 PM jim_hoyland Just installed the modified vanagon TB; sent the T... Nov 16 2016, 09:38 PM jim_hoyland Pic of the orig 914 TB next to the Vanagon before ... Nov 16 2016, 09:41 PM Porschef Jim, what did you find to feel different? How was... Nov 17 2016, 11:59 AM jim_hoyland
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I purchased the GoWesty throttle body a few weeks... Apr 2 2021, 05:04 PM echocanyons I ran the go west TB for a couple years. I had ZPh... Apr 2 2021, 05:17 PM timothy_nd28 Beautiful! I'm going a slightly different... Apr 2 2021, 05:22 PM echocanyons There is a taper but the go westy is part fits wit... Apr 2 2021, 05:26 PM timothy_nd28 I was going to buy a used Vanagon throttle body, b... Apr 2 2021, 05:41 PM Geezer914 I had to open up the plenum with a tail pipe expan... Apr 4 2021, 01:38 AM timothy_nd28 The GoWesty throttle body came like this, some kin... Apr 5 2021, 03:29 PM strawman
... Also got rid of the 3d printed cam, and had... Apr 7 2021, 12:55 PM ClayPerrine
... Also got rid of the 3d printed cam, and ha... Apr 7 2021, 02:19 PM wonkipop so, if i want to do this, but not "destroy... Apr 5 2021, 06:18 PM Shivers I have its little brother
Apr 7 2021, 04:49 PM VaccaRabite Is the 2.1l TB the one off a wasserboxer?
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Is the 2.1l TB the one off a wasserboxer?
[b]@[... May 2 2021, 08:27 AM VaccaRabite http://www.914world.com/bbs2/index.php?s=&...t... May 7 2021, 06:29 PM 914werke problem is the part has been outta stock for some ... Jun 22 2021, 03:23 PM |
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