Useful information from Paruzzi magazine and from our YouTube channel :
Engine overhaul - video 07 TDC compression in practice In video six, we explained the operation of the four-stroke internal combustion engine through animations. In this video we will look at how to determine the top dead centre of cylinder 1 in practice. We will also learn how to find the compression stroke of cylinder 1, different techniques will be shown.
Engine diagnostics - video 01 crankshaft end play In the first video of this new series, we will look at how to measure the crankshaft end play. Measuring the crankshaft end play, will help you estimate if your engine needs a total overhaul. If the result of the measurement is greater than or equal to 0.15 millimeters, then the crankshaft clearance is too large, and a total engine overhaul is recommended.
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.
oil seals All rotating parts fitted with bearings lubricated by oil or grease, such as crankshafts, transmission shafts, drive shafts, steering rods, etc., must be sealed. In our classic VW's we find two types of oil seals, namely the static and the dynamic (lip seal) oil seals.
measure crankshaft end play The play is caused by wear of the engine, this is actually very normal, and will occur faster with performance engines. With normal use of standard VW engines in combination with a good maintenance of the engine, wear will not occur quickly.
Engine overhaul - video 03 the workshop We show in this video what the possibilities are to work on your VW engine. If you plan to overhaul several engines, then buying a professional engine stand is recommended. If you only want to overhaul the engine of your own classic Volkswagen, then buying special tools is not cost effective. We will show all options.
crankshaft seal replacement If you find that the crankshaft clearance is outside the factory specifications, replacing the crankshaft seal will not be a solution for the oil leak you have identified. If the crankshaft clearance is less than 0.30 mm, it makes sense to replace the oil seal, otherwise a total engine overhaul is the only worthwhile option.
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 06 find the TDC compression stroke We will explain in this video how to determine the top dead center, as well as which of the two top dead center moments is this one from the compression stroke. This is important in order to properly position the distributor drive shaft. Properly understanding how a four-stroke engine works is essential when you begin an engine overhaul.
Engine diagnostics - video 03 pushrods In video fourteen of our series on engine overhaul, we disassembled and reassembled the rocker arms and pushrods. In this video, we will inspect the pushrods. The result of this diagnosis, will tell us if we can reinsert the pushrods, or if we need to replace them.