Adapters for Vacuum Lines by Weber

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chen_cheng
Posts: 3
Joined: Mon Apr 06, 2026 7:44 am

Adapters for Vacuum Lines by Weber

Post by chen_cheng »

Next month, I will install a new Weber carburetor in place of the existing one on my 1988 B2200. It was mentioned in the literature that certain vacuum lines or ports needed to be sealed. Do I require caps that slide over the lines or plugs that fit within the lines? Also, which lines should be blocked off?
leo.berglf
Posts: 10
Joined: Mon Apr 06, 2026 7:44 am

Re: Adapters for Vacuum Lines by Weber

Post by leo.berglf »

This modification was performed on my 1986 B2000. I will take a few pictures and upload them.

Most of your queries may be easily answered by looking at the photographs.


I highly suggest creating separate plates for your egr and other items as well.
chen_cheng
Posts: 3
Joined: Mon Apr 06, 2026 7:44 am

Re: Adapters for Vacuum Lines by Weber

Post by chen_cheng »

Whatever the case may be, I seem to recall that there are a couple beneath the manifold as well. Socks are a must.
Once you have the PCV and the vacuum advance for the distributor, that's pretty much it. Also, I captured a photo showing the plate positioned over the egr port. After constructing mine on a table, I mounted the whole manifold onto the vehicle.


When the adapters are sanded down to a perfectly smooth surface, the redline adapter set and linkage become quite attractive. The photographs also show that.
If you swap out the manifold for a header, your vehicle will look completely different. Worry no more about getting stuck in traffic. 😆
leo.berglf
Posts: 10
Joined: Mon Apr 06, 2026 7:44 am

Re: Adapters for Vacuum Lines by Weber

Post by leo.berglf »

MM....a fan shroud would be handy! Putting the shroud on the standard fan makes it function much better.
leo.berglf
Posts: 10
Joined: Mon Apr 06, 2026 7:44 am

Re: Adapters for Vacuum Lines by Weber

Post by leo.berglf »

I just wrapped the wire harness and zip-tied it down, leaving most of the emission garbage attached to the passenger fender. I will eliminate it properly one day. Along with the pleated paper air filter, I have installed the Redline adaptor to accommodate a standard 5 1/8" neck air filter housing.The rectangular air filter was a pain to clean, dry, and oil; now I can do it much more quickly.
joel_coxe
Posts: 11
Joined: Mon Apr 06, 2026 7:44 am

Re: Adapters for Vacuum Lines by Weber

Post by joel_coxe »

Invest in high-quality vacuum caps instead of cheap ones; the latter will become brittle and shatter in a matter of months. Let me explain how I know this.

For my part, I often utilize a combination of rubber vacuum tubing attached to an alternate intake manifold port and vacuum tubing that is either closed with a golf tee made of wood or both.


The EGR block off is available for purchase here.
joel_coxe
Posts: 11
Joined: Mon Apr 06, 2026 7:44 am

Re: Adapters for Vacuum Lines by Weber

Post by joel_coxe »

chen_cheng
Posts: 3
Joined: Mon Apr 06, 2026 7:44 am

Re: Adapters for Vacuum Lines by Weber

Post by chen_cheng »

Much obliged.
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