You are probably correct. ;) I'm assuming the bolts won't line up, and/or the larger cylinder bore won't mate, or seal properly with the smaller volume of the 196cc cylinder head.

I can confirm that the studs line up, but the dowels are smaller on the Zong. Back to the lab.

Sorry for disappearing XD As mentioned in the other thread, work's been killing me.

Pardon my ignorance, but can you guys suggest somewhere a layman could read up on "stroke" and "bore" and other engine bits?

The bore of the cylinder is the diameter of the piston. The stroke is the distance the piston moves in the cylinder. ;)

Here is an excellent website for learning more about motorcycles. Brother Dan is an Idahoan, and an excellent teacher. :tup:

http://www.dansmc.com/mc_repaircourse.htm

That's an excellent question, and we all started somewhere. These gentlemen provided good resources for you, and I encourage you to read them.

To further the discussion, remember the lessons on volume of a cylinder in middle school math? If you measure the volume of the cylinder (in millilitres) when the piston is at the bottom, you'll get the size of the engine. A millilitre is the same volume as a cubic centimetre, so 250ml = 250cc.

If you measured the cylinder of a car (again, with the piston at the bottom) and then multiplied by the number of cylinders, you'd get the size of the total engine. As an example, if the volume of one cylinder multiplied by six cylinders = 3000ml, that is where we get the expression of a 3 litre engine. In case you're not as familiar with metric, 1000ml = 1 litre.

Ahhhh, this all makes very good sense, now. Thank you guys!!!