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One finished and one part finished inlet manifold. Rob

Just finished the valve gear. Regards, Rob

Hi Marcus, Good to hear you're back in the workshop. Good luck with the crank, hope you can do better than my four attempts. Regards, Rob

Hi Blighty, Good luck with your build, it's a great engine to build - not that I've had much experience as this is only my second build. Hi Mike, As for the rocker arms, it's all in the CNC and some very small cutters. I have a small tabletop CNC mill. It's obviously possible to make it without...

Thanks Steve, I see you've been busy too. Stunning work you do. :bow: Just finished the plugs, they started life as Enya 3s, I've also turned the thread off and re-threaded M5 Fine. Rob

Rocker arm. Just another 15 to go.

Hi Steve, I managed to scrap a few cranks before I ended up machining most of it in the milling machine and just finished it off in the lathe. Keep us posted. Rob

The heads with valve guides and the valves - they're very small! Rob

A few pictures with the heads on. Rob

I managed to finish the other one last night. Just need to cut the valve seats now but I'll wait until I have the valve guides in first. Might put the heads on the engine later just to see what it looks like. Rob

A few pictures of the cylinder head. Rob

They should be fine, you don't need anything too big for this engine. Good luck. Rob

Couldn't resist putting it together just to see what it looked like.

Finished the pistons, now starting on the rings. Rob

Hi Steve, I haven't started the heads yet, I'm on the pistons at the moment. You may be getting me confused with xpylonracer, he has the heads finished, I think, and was starting on the crank. Regards, Rob

Hi Baz, The blacken process I used is a cold process involving:- 1/ an alkaline solution to clean/degrease 2/ rinse under cold water 3/ blackening solution 4/ rinse under cold water 5/ an oil solution to seal. Not sure on the chemistry but it involves copper and selenium. The copper reacts...

Some pictures of the cylinders after blackening, also the fully floating gudgeon (rist) pins which have PTFE pads on the ends. Making the pistons and rings next. Regards, Rob

Hi Alexandre, Work is progressing slowly on the engine. I've finished machining / lapping the cylinders just need to chemically blacken them now but it's a bit cold to do this in the garage so I'll need to moving into the kitchen! Need to pick the right moment for this as she won't be impressed...

Thanks for the comments and support everyone. Hi Randel, I was rather hoping it was just one crank, think it's just my dodgy camera work that makes them look different. Next I need to machine some flats on the cylinder cooling fins so they fit together on the crankcase and then machine 4 slots...

I have been requested to start a new thread - sorry, not sure of the posting etiquette. Progress so far on the cylinders and crank/rods. Rob