I can't understand how it even ran with the manifold loose as it was. As you look at the back or pully end of the engine on the right side is No 1 flywheel end and 2 on the pully end. On the left flywheel end 3 and 4. Took the serial number off the block and traced it to 1966 only engine. I have had a popping on the no 3 or 4 side ever since I bought it. Thought it was just a valve that was too tight. Have adjusted the valves many times to get rid of it. Thougth I had a burnt valve. Now with the intake buttoned down as it should be, runs great. First time in my life I have ever had something like this happen. Yes it is a screemer, believe it or not, I was doing 65 or better coming home. Engine sounded a little different but it still ran like it wasn't evern hurting, even started like it had no problems. I love the old VWs and always have. Now to put the new carb on my other 66 bug and get her back on the road. Carl
Certified Beer Drinker.
Certified Fun Lover.
Just Certified, but in a good way.