This article contains engine letter codes and serial number information for classic VW Type 1, Type 2, Type 3, and Type IV engines.

Use this tool to determine the engine size and compression of your classic VW, aircooled engine.

This article breaks down and explains the different distributor options as well as helpful information to help you decide which distributor is best for your specific VW engine setup.

Nitrous oxide can be used in your VW engine to create more horsepower. All engines operate under the same principles: better breathing, plus more fuel in a denser vapor equals more power. This article breaks down the things you need to know to run nitrous oxide in your classic VW

Increase your VW's engine ower with proper piston, cylinder, and ring operation. The way that pistons, cylinders, and rings work together to support engine power is often misunderstood or mysterious to enthusiasts. But anyone who wants to get the most fun and drivability out of their VW engine should take the time to understand how pistons and cylinders operate relative to the airflow through their engine system.

Following proper VW engine breakiin procedure is the first step toward a long life for your daily driver, and a key preventative step to avoid a fast death for a high-performance VW engine. The information in this article can also be a useful guide to starting a VW engine that has been sitting for a long time, since the break in procedure ensures proper oiling before the engine fires up.

This article is a guide to the theory and choices involved in building performance engines for Aircooled VWs (Type 1). There are careful decisions to be made with regard to the engine size and components that are “right” for what you have in mind.

Aircooled Volkswagen enthusiasts have quite a few carburetor options. Performance increases that can be gained by going with aftermarket carburetion are a common consideration, but without a little guidance, you can end up with nightmares associated with poor carburetor selection or poor tuning.

After springing for a set of carburetors, some people bolt them on, and are “pleased” with the results. Others are upset by a backfiring, or smoke belching monster. In either case, spending the time to properly jet a set of dual (or single) carburetors is a worthwhile task, since receiving “perfect out-of-the-box” carburetors is one of the biggest myths in the VW industry!