When assembling a engine on normal cars no1 piston is tdc and no 4 rock what it vw beetle 1600?

In a Volkswagen Beetle 1600, when assembling the engine, the piston positions are different from what is considered "normal" for most cars. Here's the correct piston positioning for a VW Beetle 1600:

- No. 1 Piston (Front): No. 1 piston should be at Top Dead Center (TDC) on the compression stroke. This means the piston is at the highest point in the cylinder, and both valves are closed.

- No. 4 Piston (Rear): In the VW Beetle 1600, No. 4 piston is set 180 degrees opposite to No. 1 piston. Therefore, when No. 1 piston is at TDC, No. 4 piston should be at Bottom Dead Center (BDC) on the exhaust stroke. This means the piston is at the lowest point in the cylinder, and the exhaust valve is open.

When assembling the engine, follow the correct piston positions to ensure proper engine operation. Misaligning the pistons can cause interference between valves and pistons, leading to engine damage. It's crucial to refer to the specific workshop or repair manual for your VW Beetle 1600 for more detailed assembly instructions.