Recent content by Atonsis

I don't know. But didn't the Mazda Rx7 have one?

Got it. On a side note, what are your opinions on Wenkel (rotary) engines?

Safety is one part, but if you foul out a single plug in one cylinder, on an engine that has single plugs, you still are running on the other cylinders. The main purpose of the dual plugs is the even flame propagation. It helps eliminate hot spots and detonation in combination with the...

In aircraft engines, the cylinder walls are either chrome plated, nitrided, or plain steel. Because of this the piston rings are different materials as well. As for the end gap, they're staggered in even portions (i.e. 4 rings at 90 degrees each, 3 at 120, etc.) This is done so that you don't...

This is why aircraft reciprocating engines have a top and bottom spark plug to create a uniform burn, and evenly propagating flame front.

I'm an aircraft mechanic, and when I went through my training, they didn't really touch hemispherical heads. So, in essence, it's just to allow greater flow into the cylinder by allowing larger valve heads to have more room?

These days you hear often about cars having "Hemis". Correct me if I'm wrong, but the hemispherical head allows for a slight increase in volumetric efficiency of the cylinders, but is there any other advantages to it? Thanks for you help!