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BarryL  Samba Member

Joined: November 01, 2004 Posts: 15242 Location: Casa de Oro, California
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Posted: Sat Jun 14, 2025 6:08 pm Post subject: Air Cleaner to Carburetor Tube Crummy Mold |
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Anyone bought one of these lately? This one I bought from WCM since they supposedly make the best “they themselves would use”. They are unusable as shipped.
Horrible flashing on all four mold seams.
So horrible I can’t imagine what damage the flashing would cause to the carburetor much less when it goes into the combustion chambers if it makes it past the valve seat. Three hours so far delicately scraping to get to this point.
At the bellows it is impossible to deflash the ribs. I don’t know how I’m going to get the flashing gone.
This is but a tiny fraction of flashing removed from the tube.
Total sheesh. |
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sub-hatchtim Samba Member
Joined: September 19, 2006 Posts: 2669 Location: Phoenix AZ
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Posted: Tue Jun 17, 2025 11:45 am Post subject: Re: Air Cleaner to Carburetor Tube Crummy Mold |
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Tbh if that stuff flaked off doubt it would cause damage _________________ 58' pg/sg silo fridge westy
58 Dove blue singlecab
76 911S |
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campingbox  Samba Member

Joined: November 14, 2000 Posts: 10250 Location: Petaluma, CA
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Posted: Tue Jun 17, 2025 5:49 pm Post subject: Re: Air Cleaner to Carburetor Tube Crummy Mold |
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I’m no engineer, but I can’t imagine a thin sliver of rubber would do much to the valve or the valve seat.
I’ve bought those new before and I’m not sure how they compare to yours - I haven’t really paid much attention to the casting flashing, but I fully support you deburring it. Is it flexible enough to be rolled inside out? |
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BarryL  Samba Member

Joined: November 01, 2004 Posts: 15242 Location: Casa de Oro, California
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Posted: Tue Jun 17, 2025 6:33 pm Post subject: Re: Air Cleaner to Carburetor Tube Crummy Mold |
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Impossible to turn inside out.
All I want going down the throat of my engine is clean air blended with atomized 91 octane gas. |
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70bus  Samba Member

Joined: July 15, 2004 Posts: 1416 Location: P.O.
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Posted: Tue Jun 17, 2025 6:36 pm Post subject: Re: Air Cleaner to Carburetor Tube Crummy Mold |
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At least the gas and that flashing are from the same source! _________________ Craig K
70 Neunsitzer
65 Pritschenwagen
"If Von Dutch was alive, he'd walk in there with a pistol and shoot these people." - Robert Williams
Raul the 65 singlecab
Karl the 70 nine-seater |
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campingbox  Samba Member

Joined: November 14, 2000 Posts: 10250 Location: Petaluma, CA
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Posted: Tue Jun 17, 2025 7:07 pm Post subject: Re: Air Cleaner to Carburetor Tube Crummy Molding |
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BarryL wrote: |
Impossible to turn inside out.
All I want going down the throat of my engine is clean air blended with atomized 91 octane gas. |
I wonder how flexible it would be after boiling it in hot water?
Regardless I’m looking forward to seeing the flow bench specs - before and after. |
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BonTonRoulet Samba Member
Joined: September 29, 2020 Posts: 472 Location: Mississippi
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Posted: Wed Jun 18, 2025 1:09 pm Post subject: Re: Air Cleaner to Carburetor Tube Crummy Mold |
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A long stem fireplace/grill lighter would take care of the flashing on the inside of the tube if it bothers you that bad? _________________ Never argue with an Idiot. They'll only bring you down to their level and beat you with experience. |
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Wade Samba Member

Joined: February 13, 2007 Posts: 128 Location: NorCal
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Posted: Wed Jun 18, 2025 1:39 pm Post subject: Re: Air Cleaner to Carburetor Tube Crummy Mold |
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It doesn't seem like a big deal at first glance, but I agree with the OP. For the same reason I don't use silicone gasket maker between my engine case halves, I wouldn't want this stuff floating around in my engine. I can only imagine the oil passageways it could clog up and the oil pressure issues that could result. |
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Eric&Barb Samba Member

Joined: September 19, 2004 Posts: 25986 Location: Olympia Wash Rinse & Repeat
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Posted: Wed Jun 18, 2025 3:30 pm Post subject: Re: Air Cleaner to Carburetor Tube Crummy Mold |
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Wade wrote: |
It doesn't seem like a big deal at first glance, but I agree with the OP. For the same reason I don't use silicone gasket maker between my engine case halves, I wouldn't want this stuff floating around in my engine. I can only imagine the oil passageways it could clog up and the oil pressure issues that could result. |
Any pieces of rubber that got by the piston rings would be super tiny. Also if one is running a quality oil filter pump, that is going to remove any tiny pieces of rubber and all the usual much bigger bits and pieces of metal shavings that do happen all the time in these engines. _________________ In Stereo, Where Available! |
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BarryL  Samba Member

Joined: November 01, 2004 Posts: 15242 Location: Casa de Oro, California
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Posted: Wed Jun 18, 2025 6:34 pm Post subject: Re: Air Cleaner to Carburetor Tube Crummy Mold |
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BonTonRoulet wrote: |
A long stem fireplace/grill lighter would take care of the flashing on the inside of the tube if it bothers you that bad? |
Will try that. |
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BarryL  Samba Member

Joined: November 01, 2004 Posts: 15242 Location: Casa de Oro, California
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Posted: Tue Jun 24, 2025 6:30 pm Post subject: Re: Air Cleaner to Carburetor Tube Crummy Mold |
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BarryL wrote: |
BonTonRoulet wrote: |
A long stem fireplace/grill lighter would take care of the flashing on the inside of the tube if it bothers you that bad? |
Will try that. |
Well, I tried it. My lighter is adjustable so I put it on med low about a 1/4" flame head. I bent the tube so I could see the bellows' flashing.
I was hoping it would shrink away like the shy girls at the Junior High dance but no. The flashing wasn't phased and merely caught smokey. It made my nostrils and throat feel like someone sprayed poop scented surfboard wax on it.
Any higher flame would have melted right through the wall thickness. I'm going to try to find another supplier.
Found it at VW Heritage
https://www.heritagepartscentre.com/us/211129627-remote-air-cleaner-to-carburetor-hose.html
How hard is it to get into the USA? |
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70bus  Samba Member

Joined: July 15, 2004 Posts: 1416 Location: P.O.
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Posted: Tue Jun 24, 2025 7:35 pm Post subject: Re: Air Cleaner to Carburetor Tube Crummy Mold |
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Was made here. There probably is a US supplier. _________________ Craig K
70 Neunsitzer
65 Pritschenwagen
"If Von Dutch was alive, he'd walk in there with a pistol and shoot these people." - Robert Williams
Raul the 65 singlecab
Karl the 70 nine-seater |
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HMVWNAB Samba Member

Joined: September 23, 2006 Posts: 1202 Location: Sunshine State
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Posted: Wed Jun 25, 2025 5:06 am Post subject: Re: Air Cleaner to Carburetor Tube Crummy Mold |
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Did you consider a Dremel tool with sander bit, provided you can reach the flash in question? |
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BarryL  Samba Member

Joined: November 01, 2004 Posts: 15242 Location: Casa de Oro, California
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Posted: Wed Jun 25, 2025 6:15 pm Post subject: Re: Air Cleaner to Carburetor Tube Crummy Mold |
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HMVWNAB wrote: |
Did you consider a Dremel tool with sander bit, provided you can reach the flash in question? |
I did try that but the flashing becomes blind as soon as the tool approaches.
I tried it on the easy stuff at first but it was too hard to control even on low. What worked for the parts already done was a large rough rat-tail file with a squared off ending that was sharp and I could slide it lengthwise over and over not as a file but as a sharp pushing blade thingy. |
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BarryL  Samba Member

Joined: November 01, 2004 Posts: 15242 Location: Casa de Oro, California
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Posted: Thu Jun 26, 2025 3:03 pm Post subject: Re: Air Cleaner to Carburetor Tube Crummy Mold |
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Finally...I thought maybe if I beat on the bellows with a toilet plunger handle I could knock the flashing free and if it didn't fall out then I'd just put it on as was.
I beat it within an inch of its life but nothing came loose.
Then I realized I could squish the bellows to use my sharp file trick.
It was majorly hard to squeeze but I figured get it over with then recover from the injury.
Out of focus but you can see each flash seam had to be squished one cm at a time.
This is the combo that worked.
It took 6 hours. Just to teach it lesson I beat it with the stick again.
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BarryL  Samba Member

Joined: November 01, 2004 Posts: 15242 Location: Casa de Oro, California
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Posted: Fri Jun 27, 2025 11:35 am Post subject: Re: Air Cleaner to Carburetor Tube Crummy Mold |
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Anybody know which way the tube goes? Is it bellows to air cleaner or bellows to carburetor?
Edit never mind I saw this.
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Eric&Barb Samba Member

Joined: September 19, 2004 Posts: 25986 Location: Olympia Wash Rinse & Repeat
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Posted: Fri Jun 27, 2025 12:06 pm Post subject: Re: Air Cleaner to Carburetor Tube Crummy Mold |
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Those ribs in the tube are for stress/flex relief due to the vibration of the engine. So better closer to the carb. One can just use a hose for that, but then the vibration against the carb and air cleaner can cause cracking of metal parts. _________________ In Stereo, Where Available! |
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DanM Samba Member

Joined: June 07, 2002 Posts: 1376 Location: Falls Church, VA
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Posted: Fri Jun 27, 2025 4:05 pm Post subject: Re: Air Cleaner to Carburetor Tube Crummy Mold |
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BarryL wrote: |
It took 6 hours. |
put down the pipe! (literally).  |
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BarryL  Samba Member

Joined: November 01, 2004 Posts: 15242 Location: Casa de Oro, California
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Posted: Sat Jun 28, 2025 6:14 pm Post subject: Re: Air Cleaner to Carburetor Tube Crummy Mold |
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In The 63-67 Bentley section K-2 page 15 it shows two more photos with the bellows left. |
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Chuey Samba Member
Joined: October 18, 2010 Posts: 886 Location: Oceanside, California
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Posted: Tue Jul 01, 2025 10:11 am Post subject: Re: Air Cleaner to Carburetor Tube Crummy Mold |
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A wire wheel as in the ones you can spin in a drill motor would knock loose any inner flashing that would be loose enough to *ever* come out. An extension shaft may need to be procured or devised.
I know you got it done but in case this is searched, this would be a “sub 6 hour” process.
Chuey |
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