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Gnarlodious 
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Joined: September 28, 2013
Posts: 2318
Location: Adobe Jungle USA
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 Posted: Sat Mar 18, 2017 10:17 pm Post subject: Diesel oil cooler upgrade, length of threaded pipe |
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Antone got one they can measure?
Putting the Passat V6 028117021E oil cooler on my AAZ, but before I take it apart, what length does the union bolt need to be?
I believe I need the longer extension 028115721B, but want to measurethe one I ordered to make sure it wll fit.
Thanks.
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Vanagon ’83 diesel AAZ w/Giles injection, 5spd 4.57R&P+TBD and a '78 diesel Rabbit |
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dkoesyncro
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Joined: December 10, 2006
Posts: 982
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| Posted: Sun Mar 19, 2017 12:20 am Post subject: Re: Diesel oil cooler upgrade, length of threaded pipe |
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| Use the pipe from the V6, I did this on our tdi. Plug and play! |
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Gnarlodious
Samba Member
Joined: September 28, 2013
Posts: 2318
Location: Adobe Jungle USA
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| Posted: Sun Mar 19, 2017 9:20 am Post subject: Re: Diesel oil cooler upgrade, length of threaded pipe |
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To put in the larger Passat oil cooler I need the longer threaded rod, but the question is, how long is it? I ordered one that was described to fit the cooler, but it looks like it is too short:
The pipe as shown in position measures 85mm, but barely offers enough thread to screw into anything. There is no part number on the pipe to identify it. I also searched the internet for a length but none was found.
So the question remains, how long should the V6 passat oil cooler tube be?
Addenda:
I guess now I’m getting confused. The cooler I got, allegedly part # 028117021E, feature a plastic baffle inside (028117070B) that apparently directs the oil flow:
Did I get the right part? Is there also an o-ring that seals the cooler to the mount? Can I run this cooler on my AAZ?
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Vanagon ’83 diesel AAZ w/Giles injection, 5spd 4.57R&P+TBD and a '78 diesel Rabbit |
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tkic
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Joined: December 13, 2004
Posts: 34
Location: Portland, OR
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| Posted: Sun Mar 19, 2017 2:02 pm Post subject: Re: Diesel oil cooler upgrade, length of threaded pipe |
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Unfortunately i'm unable to help with specific part numbers, but after installing the taller V6 passat heat exchanger on my 1.6td i was still seeing temps up to 240/250 on the interstate. I added a cheap ebay sandwich plate and air/oil cooler in the D pillar and haven't seen over 220 since. If i were to do it again i'd go straight for the sandwich plate cooler first.
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84' westy JX turbo diesel, Giles pump/injectors |
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bryanbelman
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Joined: December 23, 2005
Posts: 7
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| Posted: Mon Jun 05, 2017 11:16 am Post subject: Re: Diesel oil cooler upgrade, length of threaded pipe |
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Hello, I am seeing temps of 255-260 in my AAZ, I also have the Passat oil cooler, so I am going to need to install the sandwich plate setup I got from Summit Racing and air/oil cooler from an old dune buggy or something.
What type of hose should I use?
I still have my battery in stock 82 diesel location, was planning on putting it in the D pillar behind the battery or above the transmission. Which do most prefer?
Thanks |
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rmcd
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Joined: October 29, 2010
Posts: 1348
Location: PNW - its a dry rain.
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Waldi
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Joined: February 28, 2014
Posts: 1752
Location: Germany
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| Posted: Tue Jun 06, 2017 1:33 am Post subject: Re: Diesel oil cooler upgrade, length of threaded pipe |
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| bryanbelman wrote: |
Hello, I am seeing temps of 255-260 in my AAZ, I also have the Passat oil cooler, so I am going to need to install the sandwich plate setup I got from Summit Racing and air/oil cooler from an old dune buggy or something.
What type of hose should I use?
I still have my battery in stock 82 diesel location, was planning on putting it in the D pillar behind the battery or above the transmission. Which do most prefer?
Thanks |
In front of watercooler.
Install the sandwich plate before the stock cooler.
Connect the out line of stock cooler with the back tube from front heater, using a T conector instead the original I plastic connector.
This way the hot oil will dont heat your water up before going through your oil cooler. And the water heats up the oil faster. |
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cawvin
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Joined: August 29, 2013
Posts: 63
Location: Whatcom County
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| Posted: Wed Aug 25, 2021 7:04 am Post subject: Re: Diesel oil cooler upgrade, length of threaded pipe |
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| Gnarlodious wrote: |
Addenda:
I guess now I’m getting confused. The cooler I got, allegedly part # 028117021E, feature a plastic baffle inside (028117070B) that apparently directs the oil flow:
Did I get the right part? Is there also an o-ring that seals the cooler to the mount? Can I run this cooler on my AAZ? |
Hey Gnarlodious,
resurrecting an old thread here, but
I too just got one of these larger V6/passat oil coolers (028117021E, and the threaded rod 028115721B) and found that plastic baffle you have pictured above. I almost tossed it away thinking it was just a piece of packaging, but then I realized that it is the O-ring, integrated into the disc-shaped part.
Are people installing this plastic baffle just as it comes? I had a great temptation to modify it because of how much it looked like it would inhibit oil flow through the cooler. The two long plastic tubes on the sides of it had a narrow slit in one, and just a small hole in the other, in an imprecise-seeming, asymmetrical molding. I talked myself out of cutting them, deciding "maybe it's for a flow-directing reason that I'm unaware of" But I'm still wondering about it because after the install, I'm not seeing temps all that different from what my stock AHU cooler did.
What did you end up doing with your oil cooler?
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1986 tin top syncro w/ ahu tdi @ 50* |
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valvecovergasket
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Joined: October 10, 2018
Posts: 1491
Location: pnw
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| Posted: Wed Aug 25, 2021 7:33 am Post subject: Re: Diesel oil cooler upgrade, length of threaded pipe |
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| bryanbelman wrote: |
Hello, I am seeing temps of 255-260 in my AAZ, I also have the Passat oil cooler, so I am going to need to install the sandwich plate setup I got from Summit Racing and air/oil cooler from an old dune buggy or something.
What type of hose should I use?
I still have my battery in stock 82 diesel location, was planning on putting it in the D pillar behind the battery or above the transmission. Which do most prefer?
Thanks |
i removed my oil warmer plate entirely, and replaced it with a thermostatic plate and an air/air cooler in the pillar (the vanistan kit).
oil temps never get above ~180F no matter how hard im charging and the little fan on the cooler works great in slow traffic.
/tangent 
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Gnarlodious
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Joined: September 28, 2013
Posts: 2318
Location: Adobe Jungle USA
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| Posted: Wed Aug 25, 2021 8:55 am Post subject: Re: Diesel oil cooler upgrade, length of threaded pipe |
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| cawvin wrote: |
| "maybe it's for a flow-directing reason that I'm unaware of" |
That’s exactly right. Apparently due to the difficulty or imprecision of metal forming they employ an insertable plastic distributor to ensure the oil comes in contact with the heat exchanger. I determined this after some examination. I recall that the baffle was broken in some way when I got it but that a replacement from the VW dealer was cheap enough. Seems like it is a routine replacement whenever you have it apart. It has been working just fine for 4 years! At the same time I rerouted my coolant tubing to the TDi setup, which there is a post somewhere with a diagram for it. Also note that it helped significantly lower my oil temps when I put on a 2˝“ exhaust, especially noticeable when climbing a long mountain pass in thin air.
Fo anyone considering this mod, the used Passat unit I bought from eBay has never leaked at the seam, while apparently the cheaper aftermarket new ones are less reliable.
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Vanagon ’83 diesel AAZ w/Giles injection, 5spd 4.57R&P+TBD and a '78 diesel Rabbit |
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cawvin
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Joined: August 29, 2013
Posts: 63
Location: Whatcom County
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| Posted: Thu Aug 26, 2021 7:32 am Post subject: Re: Diesel oil cooler upgrade, length of threaded pipe |
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| Gnarlodious wrote: |
| cawvin wrote: |
| "maybe it's for a flow-directing reason that I'm unaware of" |
That’s exactly right. Apparently due to the difficulty or imprecision of metal forming they employ an insertable plastic distributor to ensure the oil comes in contact with the heat exchanger. I determined this after some examination. I recall that the baffle was broken in some way when I got it but that a replacement from the VW dealer was cheap enough. Seems like it is a routine replacement whenever you have it apart. It has been working just fine for 4 years! At the same time I rerouted my coolant tubing to the TDi setup, which there is a post somewhere with a diagram for it. |
Awesome, thanks. Maybe I’ll get a genuine plastic baffle from VW just to see how it looks. Mine looked very weird, should’ve taken a picture. I think I will do that coolant plumbing re-work as well, seems to have helped people in conjunction with this larger cooler swap. Question about it though, does it keep your oil “too cold” in cold start situations? By always flowing it through the cooler? Wondering about winter driving, getting up to operating temp.
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pjn_wyo
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Joined: April 22, 2019
Posts: 181
Location: Bellingham, WA
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| Posted: Thu Aug 26, 2021 7:58 am Post subject: Re: Diesel oil cooler upgrade, length of threaded pipe |
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| Does anyone have the VW part number? I think I threw this plastic baffle away when I installed my oil cooler (but the van hasn't been fired up yet...) |
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valvecovergasket
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Joined: October 10, 2018
Posts: 1491
Location: pnw
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| Posted: Thu Aug 26, 2021 8:10 am Post subject: Re: Diesel oil cooler upgrade, length of threaded pipe |
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im not seeing it separately in the parts drawing..
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cawvin
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Joined: August 29, 2013
Posts: 63
Location: Whatcom County
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| Posted: Thu Aug 26, 2021 9:45 am Post subject: Re: Diesel oil cooler upgrade, length of threaded pipe |
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| pjn_wyo wrote: |
| Does anyone have the VW part number? I think I threw this plastic baffle away when I installed my oil cooler (but the van hasn't been fired up yet...) |
I believe the baffle is 028117070B
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