Useful information from Paruzzi magazine and from our YouTube channel :
fuel circuit - concept The combustion engine of our air-cooled Volkswagen uses a mixture of petrol and air. It is extremely important that both the amount of air and the purity of the air are regulated, this also applies to the petrol. Unfortunately, the petrol circuit is not very well known to enthusiasts and it is not always well maintained.
Engine diagnostics - video 04 part 1 valves and valve springs In video 16 of the engine overhaul series, we disassembled the valves and valve springs.
Not all of the cylinder heads we showed were in good condition, this does not mean that all parts need to be replaced. After a thorough diagnosis, it will show if the valves and valve springs are still reusable. This video discusses valve and valve spring diagnosis. It consists of four parts.
Engine Overhaul - video 02 overhauled engines We show in this video all the engines that we overhauled for the video series. An AB 1300, an AS 1600, an AJ 1600 and a D 1200 engine, every step, every detail of the overhaul of these air-cooled Volkswagen engines will be discussed in this series.
Engine overhaul - video 16 part 2 valves removal In Part 1, we showed the basic techniques for disassembling the valves and valve springs. We did this on a fairly new cylinder head.
When you`re dealing with a used cylinder head, disassembly may be a little less smooth.
Engine overhaul - video 09 the fuel pump We will disassemble and reassemble the mechanical fuel pump from a VW Type 1 engine with carburetor in this video. The electric fuel pump is discussed in another video. The fuel pump pushrod and the fuel pump flange get extra attention in this video.
mixture preheating The engine is stopped as a result of poor combustion. This bad combustion is often caused by a, at that moment, wrong composition of the fuel in the cylinders. Because of this bad combustion, the engine does not deliver the desired power and you can feel this in the form of stuttering of the engine.
adjust type 1 carburetor The adjustment of the carburetor will determine the behavior of the engine. There are two types of carburetors for the type 1 engine when it comes to adjustment. The old generation (up to SOLEX 30 PICT-2) with two adjusting screws and the young generation with three adjusting screws (from SOLEX 30 PICT-3), recognizable by the large screw in the carburetor housing.
HPMX carburetors The most famous double carburettors are the Weber IDF and the Dellorto DRLA. Since a few years there is a new player on the market, namely the HPMX carburettor. This is marketed by EMPI and is also sold as a complete set, including manifolds, air filters, linkage and mounting material.
Engine diagnostics - video 04 part 2 valves and valve springs In the second and third parts of this video, we will measure valve spring pressure. We begin in part 2 by measuring the valve spring pressure at open valve. Also known as the valve spring pressure at maximum valve lift. In part 3, we will measure the valve spring pressure at installed length.