I have a very odd problem on the '47. There is a loud 'clicking' sound coming from the engine, better described as a 'Clickerty-Clack' sound! Disconnect the fanbelt and it goes away. It's there all the time when the engine is running and the tighter you run the fan belt, the louder the sound gets.
Thinking the dynamo was the culprit, I rebuilt it a few weeks ago (the bearings needed doing anyway), but after reassembly of everything, it seems that the noise is coming from the belt or lower pulley. When you 'pinch' the belt to test its tightness, you hear the same 'clicking' noise as the belt moves against the crank pulley. I've tried changing the belt for a new one, but the sound is still there. Any ideas as it's starting to drive me nuts?!!
Thanks,
Rich.
47 Beetle, 56 UK Karmann Cabriolet, 56 UK Beetle, 57 UK Type 2, 59 UK Beetle, 66 UK Fastback.