Easily & visually find difference 'tween engines, 1.7, 1.8 & 2.0 For Dummies Options

[Air_Cooled_Nut]

Let's say you and your buddies come across a pile of stock T4 engines (VW and Porsche), what are some easy ways to know what size the engine is? For example, all 1.8 and 2.0 engines have 3 studs to hold the intakes to the head while the 1.7 uses four. That's just an example and I'm not 100% positive that's correct but you get the idea. Thanks!

[lapuwali]

2.0 Bus heads have four bolts, so even the 1.7/1.8 four, 2.0 three metric doesn't work universally.

There are no "Porsche" Type 4s. They're all VW. The heads on the 914 2.0 and 912E were only used on those cars, and the pistons are also different, but they're still VW engines.

You need to be able to ID individual parts. The cases are all the same. There are two factory cranks (66 and 71mm stroke), and several aftermarket cranks. There are at least four different factory heads.