Thanks, glad to be here...nice to see the art of pixeling is not dead. Also thanks for the tips on improving my work. I took your advice and klav's below and combined my three submissions into one. The cylinder head would be positioned wrong for a vertical exploded view so I did side-by-side instead.

First off, welcome to PJ : )

I highly recommend that you place the 3 engine parts together as one image side by side is ok.
Its slightly redundant to have them as separate submissions, imo.

As for the pixels themselves. They are all really good especially the lineart of them. The metal parts could be refined to be more metallic, since the greys are flat looking. Thats just to make them better not that they aren't ok as they are.

Yeah, combining them probably would look better. Sorry, no crankshaft yet...and I suppose I should add connecting rods to the pistons, too

you should have put all three of these together for an exploded drawing feel. and where's the crank shaft?