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Oil bath air fliter cleaner mod for dual 28PCI intakes/carbs
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Joseph DR
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Joined: December 20, 2004
Posts: 155
Location: Conroe, Texas
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PostPosted: Thu Mar 16, 2017 8:28 pm    Post subject: Oil bath air fliter cleaner mod for dual 28PCI intakes/carbs Reply with quote

I was inspired by Peter_Plade 's oil bath/filter mod so I decided to do it for my build:

https://www.thesamba.com/vw/forum/viewtopic.php?t=349628&start=60

Peter_Plade wrote:
EverettB wrote:
What did you change in the air cleaners?


If you take a look at the bottom of the filter you can the flange that goes over the carb is of center, that of course to move the filter back towards the fan shroud on the stock motor otherwise it would hit the decklid.
But not having that problem I moved the carb flange so it is centered with the inside pipe, and almost works as a stack now. I can take some pics if that explains it better?
Can't tell if it's the filter or carbs, but I have less carb "noise" now than I used too.
Btw it wasn't the best day cutting up 2 original filters Confused But the end result was good!


So here is a 1959 oil bath air cleaner filter
Image may have been reduced in size. Click image to view fullscreen.


Yes, the clip is installed wrong on one side. It will come off for powder coating.
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If I use the air cleaner as is, it looks goofy because of the factory offset.
Image may have been reduced in size. Click image to view fullscreen.


Below, I already measured, made a template and cut the filter flange on one of the oil baths.
Image may have been reduced in size. Click image to view fullscreen.


I'll show the process I did to do this.
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Last edited by Joseph DR on Fri Mar 17, 2017 10:10 pm; edited 2 times in total
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Joseph DR
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Joined: December 20, 2004
Posts: 155
Location: Conroe, Texas
Joseph DR is offline 

PostPosted: Thu Mar 16, 2017 9:54 pm    Post subject: Re: Oil bath air fliter cleaner mod for dual 28PCI intakes/carbs Reply with quote

I used a postcard to make a template of the curve of the flange. Then I transferred it to the outside edge of where the flange will be moved.
Image may have been reduced in size. Click image to view fullscreen.


With an angle grinder and wire brush attachment, I took it down to bare metal.
Image may have been reduced in size. Click image to view fullscreen.


I traced the template with a Sharpie.
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I cut it with a Dremel and cut off wheel. It's small enough to go carefully in a circle. Not perfect but I'll shape it with a body hammer. Also, I was off by 2 or 3 mm. I'll fix it.
Image may have been reduced in size. Click image to view fullscreen.


Before: Air flow restricted.
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After: Breaths a little easier.
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Now I'm ready to weld r up. The one on the left is a '58. The one on the right (with a dimple) is a '59. Eight months apart.
Image may have been reduced in size. Click image to view fullscreen.


Tack weld and body hammer to make sure both pieces are flush/even.
Image may have been reduced in size. Click image to view fullscreen.


Finished welding the '59. I still need lots more practice.
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Here's the '58 air cleaner welded up.
Image may have been reduced in size. Click image to view fullscreen.


Grind the welds with an angle grinder. And sand even with sanding wheel thingy.
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Cleaned up.
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Centered. This pic was taken before I welded it.
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Success! Looks cool now.
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I don't want to chase pinholes, so I put a skim coat of JB Weld on it. This will ensure a seal. Tomorrow I will sand it and then it's off to the powder coater! JB Weld will withstand up to 500 F and the powder coating process.
Image may have been reduced in size. Click image to view fullscreen.


Hope this was helpful to you. Let me know if I missed something.
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Peter_Plade
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PostPosted: Thu Mar 16, 2017 11:10 pm    Post subject: Re: Oil bath air fliter cleaner mod for dual 28PCI intakes/carbs Reply with quote

Good job!
I'm happy to see that my previous work inspired you to do this modification 😊
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Lingwendil
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PostPosted: Fri Mar 17, 2017 3:59 pm    Post subject: Re: Oil bath air fliter cleaner mod for dual 28PCI intakes/carbs Reply with quote

Cool

I'm doing this on my next dual solex build.

I actually gave one of those exact oil bath filters away a few months ago, since I was unable to find a match to it! I plan on doing up a pair with dual 40 horse oil baths, but will be replacing the snorkels with the 1500/1600 style for more breathing, and of course, the look.
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Joseph DR
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Joined: December 20, 2004
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Location: Conroe, Texas
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PostPosted: Fri Mar 17, 2017 10:03 pm    Post subject: Re: Oil bath air fliter cleaner mod for dual 28PCI intakes/carbs Reply with quote

Thanks guys, it was a fun little project. Here's what they look like after I sanded the JB Weld:

1959 filter:
Image may have been reduced in size. Click image to view fullscreen.


1958 filter
Image may have been reduced in size. Click image to view fullscreen.

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