Making the Weber 32/36 DFEV work on a buggy

The single Weber 32/36 DFEV is a great carburettor but requires careful setting up, it also needs a fully heated manifold with a good flow of exhaust gas passing through the risers and hot air feed to the air intake, in fact the more heat the better.

My original Weber was supplied in 2004 with the basic heated manifold and jetting, alright in the summer but suffered manifold icing during winter driving also the throttle cable coming through the engine fan casing did not align correctly with the carburettor.

Fitting the Redline Weber full heat manifold / throttle linkage and hot air feed to the air filter has overcome most of the above problems.

To ensure the Weber gets the correct pressure and amount of fuel I have fitted a Huco electric low pressure suction fuel pump in the engine bay

The links below are relating to the Weber 32/36 DFEV carburettor:

Weber 32/36 DFEV Jetting from various suppliers

Redline Weber base line settings 

Eurocarb's Weber 32/36 carburettor and fully heated manifold kit

Making the Weber 32/36 work on a VW engine by Aircooled.net

On the original Beetle exhaust system the hot exhaust gases from No 2 cylinder were fed to the manifold via the right hand side riser pipe through the manifold and down the left hand riser pipe through the exhaust header to atmosphere as shown above

The cutaway shows how the cold exhaust gases from the manifold were ejected from the exhaust header

The full heat manifold as fitted to my engine.

If you connect the manifold risers to a set of cannons as fitted to my buggy, both sides are at equal pressure so the gases do not flow and will not heat the manifold in the same way as with an original Beetle exhaust system.
I feed hot exhaust gases from No 4 cylinder ( left hand side) through the manifold and fitted a blanking gasket between the No 2 cylinder ( right hand side) riser pipe / cannon flanges and have a copper pipe to allow the cold gases to flow to atmosphere.
The throttle linkage was modified to use a pre 1965 type 1 accelerator return spring setup
Excess metal was removed from the carb crank arm, and a lightweight linkage fitted.
Insulated gasket block fitted between manifold and carb