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Nicklastl
Samba Member
Joined: July 23, 2024
Posts: 48
Location: Denmark
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 Posted: Wed Jul 09, 2025 11:49 pm Post subject: Type 4 smog? |
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Hey guys
Currently in process of rebuilding my 1700 type 4, and I’m not sure what to do about these “smog” lines?
The previous owner had the lines welded together. See pictures l Can somebody please explain what they do and why someone would blind them off?
What would be the best thing to do?
It’s going back in a bay bus
Beat regards
_________________
'73 Westfalia Project
https://www.thesamba.com/vw/forum/viewtopic.php?t=794180&highlight= |
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busdaddy
Samba Member
Joined: February 12, 2004
Posts: 52691
Location: Surrey B.C. Canada, but thinking of Ukraine
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| Posted: Thu Jul 10, 2025 7:49 am Post subject: Re: Type 4 smog? |
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There once was an air pump driven off the crank that pumped air into those to burn pollutants in the exhaust.
The solution is a M10 x 1.0 hex drive pipe plug, or valve adjuster screw.
_________________
Rust NEVER sleeps and stock never goes out of style.
Please don't PM technical questions, ask your problem in public so everyone can play along. If you think it's too stupid post it here
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Слава Україні! |
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Nicklastl
Samba Member
Joined: July 23, 2024
Posts: 48
Location: Denmark
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| Posted: Yesterday 12:33 am Post subject: Re: Type 4 smog? |
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| busdaddy wrote: |
There once was an air pump driven off the crank that pumped air into those to burn pollutants in the exhaust.
The solution is a M10 x 1.0 hex drive pipe plug, or valve adjuster screw. |
Thanks så det best thing to do would be just to Block them off?
_________________
'73 Westfalia Project
https://www.thesamba.com/vw/forum/viewtopic.php?t=794180&highlight= |
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busdaddy
Samba Member
Joined: February 12, 2004
Posts: 52691
Location: Surrey B.C. Canada, but thinking of Ukraine
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| Posted: Yesterday 6:44 am Post subject: Re: Type 4 smog? |
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| Nicklastl wrote: |
| busdaddy wrote: |
There once was an air pump driven off the crank that pumped air into those to burn pollutants in the exhaust.
The solution is a M10 x 1.0 hex drive pipe plug, or valve adjuster screw. |
Thanks så det best thing to do would be just to Block them off? |
Yes, screw in the pipe plugs or valve adjusters to block the holes.
_________________
Rust NEVER sleeps and stock never goes out of style.
Please don't PM technical questions, ask your problem in public so everyone can play along. If you think it's too stupid post it here
Stop dead photo links! Post your photos to The Samba Gallery!
Слава Україні! |
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