All Small Six Weber 32/36 rough idle

[DON]

Correction, I am wrong, the gasket with the open center WOULD allow vacuum around the bolt hole

 

[63 Sprint]

Correct

 

[63 Sprint]

A simple fix would be an 1/4” aluminum plate fabricated exactly to the original Weber 32/36 spacer plate. Then use two properly sized gaskets to sandwich the plate between both gaskets.

 

[63 Sprint]

These would be some good spacers if there is enough hood clearance.

32/36mm Weber DGV DGAV DGEV flange or spacer

32/36mm Weber DGV DGAV DGEV flange or spacer 1/2" thick - 2 hole | eBay

Weber DGV DGAV DGEV 32/36mm x 1/2" thick CNC milled aluminum (6061) mounting flange / spacer. The mounting holes are 6.8mm (correct size for tapping M8x1.25 studs). If you plan to use as a spacer, you will most likely have to drill the mounting holes out larger to fit over your studs.

www.ebay.com

Or:

Weber Carburetor 32/36 DGV DGAV DGEV spacer 1/2" thick aluminum New 452 | eBay

New 1/2" aluminum spacer for use with Weber DGV downdraft carburetors.

www.ebay.com

I would probably lean towards the single elongated version. Reason…possibly better fuel/air mixing & atomization in the adapter.

 

[beanmiester]

@63 Sprint Correction im getting a 1/4 inch phenolic spacer and a 1/2 inch plastic spacer. The plastic comes on Monday. The phenolic spacer hasn't been shipped yet. They came as a package so I have no clue why they are being sent separately

The plastic should seal pretty well it looks like the phenolic but its just a different material

 

[63 Sprint]

Ok, please take pictures of the phenolic spacer.

I think you mentioned that the elongated hole on the phenolic spacer is tapered as the aluminum spacer pictured in EBay on post #224. It this correct?

 

[beanmiester]

Its more tapered than the plastic one but the plastic is still tapered. If you're viewing on your phone if you turn the picture sideways its easier to see the taper

 

[63 Sprint]

Use the phenolic spacer with your new tapered gaskets. I would not use those gaskets on the plastic spacer.

 

[63 Sprint]

When looking at the adapter again. It looks like there’s too many imperfections on the adapter flange face that the plastic spacer will not seal properly.


Use the phenolic spacer.

 

[beanmiester]

I also found some thick gaskets i had. They taper but are about double the thickness of the standard gasket

 

[awasson]

No. According to weber the fuel bowl is supposed to be facing your radiator so it need an adapter that puts the weber perpendicular to the engine

That’s not correct geometry for the carb. Tne carb wants to have the choke facing forwards, linkage on the exhaust side, bowl on the valve cover side. See the attached photo.



Hopefully the phenolic plate with a gasket on each side will provide a better seal. It definitely sounds like the vacuum leak is at the studs.

 

[63 Sprint]

No. According to weber the fuel bowl is supposed to be facing your radiator so it need an adapter that puts the weber perpendicular to the engine

To members that installed 32/36 and 38/38 Webers:

beanmiester is correct. The fuel bowl faces towards the front of the engine. It’s written in both my Weber service manuals that I have.

I personally questioned Redline/Weber about this about three years ago when the question came up on this forum. They also firmly agreed that the fuel bowl faces towards the front of the engine. There are good reasons why.

This has been discussed years ago on this form. Unfortunately, the information is buried.

Here is a few paragraphs directly from the Weber shop manual:


The picture below is just one picture of many in the service manual. Every engine (whether it’s an inline 4, pancake 4 or 6, inline 6, V6, V8) shows the carburetor with the float bowl facing towards the front of the engine. No matter which intake manifold is being used.


It’s unfortunate that much misinformation has been posted about installing Weber 32/36 and 38/38 carburetors. It’s very unfortunate that many members tend to believe that the misinformation is true. I’m sorry, I’ve done my homework and research on this matter and I know what is preferred and what is not. Weber wrote the preferred installation procedures for a reason. So I guess, it comes down to what members want to believe.

Some members are happy with running a 32/36 or 38/38 sideways, and that is fine.
But it’s still not preferred.

I’ve always been a person that try’s to follow instructions. They are written for a reason.

When working on equipment that’s used for life support where people’s lives depend upon the equipment, the people servicing the equipment better do it by the book.

I’m not posting to get members bent. I’m posting this to let the facts be known.
That’s all.

If anyone is interested why the 32/36 and 38/38 float bowls are supposed to be facing forward, please do some research.