Get checked out: Blood in the phlegm can have a lot of causes: some benign, others not as much. Especially if you are a smoker, any blood in the phlegm is not normal. The best thing is to see your doctor: get the blood in the phlegm and the pain in the kidneys checked out.
Four Cylinder Engines. The four cylinder engine is just like the three cylinder engine only it has the additional cylinder and therefore weighs more. As is true of any engine, more cylinders equal more power and smoother sailing. It is important to consider how much size and power you require in your motorcycle.
Ducati has produced the following motorcycle engine types: 1  Single-cylinder, pullrod actuated, 48 cc and 65 cc (Cucciolo) pushrod actuated, 98 and 125 cc. two-stroke, 50, 80, 90, 100, 125 cc. bevel actuated, spring valved: 98 cc, 100 cc, 125 cc, 160 cc, 175 cc, 200 cc, 239 cc, 250 cc, 350 cc, 450 cc.