Useful information from Paruzzi magazine and from our YouTube channel :
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.
air filter preheating It seems to be a natural part of your air-cooled engine, but the air filter plays a crucial role, it's like breathing in a human being. The carburettor is tasked with mixing petrol with air to deliver a flammable mixture. Petrol alone is not a good fuel. That requires oxygen and not just a little bit of it.
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 overhaul - video 20 pushrod tubes With the cylinder heads out of the way, you can install standard pushrod tubes. But, disassembling the cylinder heads means replacing the gasket between cylinders and crankcase.
Engine overhaul - video 08 ignition time of cylinder 1 In this video we will determine the ignition timing of cylinder 1. This mark will be needed to correctly position the distributor drive shaft during assembly, as well as for ignition advance adjustment once the Type 1 Volkswagen engine is rebuilt.
Engine overhaul - video 14 rockers and pushrods In this video we will show how to disassemble and reassemble the rocker arms and pushrods. We will discuss the diagnosis of the rockers and pushrods in our other video series, which deals with engine diagnosis. How to adjust the rockers, an action also known as shimming, can be seen in our video series on engine adjustment.
air filter thermostat The preheating of the fresh air supplied via the air filter to the carburettor is a part of our VW engine that gets too little attention. This system will ensure that in all weather conditions the carburettor is supplied with air at the right temperature. With these younger air filter models you don't have to adjust anything in contrast to the older models.
Engine adjustment - video 01 valve clearance The valve clearance is the first thing to check when adjusting an engine. If the valve clearance is not adjusted properly, then adjusting for example, the ignition, or the carburetor, will do little good. In this video we will show you how to adjust the valve clearance.
Engine adjustment - video 02 adjusting the rocker arms In the first video of this series, we adjusted the valve clearance. In addition to the valve clearance, the position of the rocker arm relative to the valve stem, is also a very important setting. If a rocker arm is not positioned correctly, it can be adjusted, which is called shimming.