Brass or cast Iron

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Fingers

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Hi everybody I am reposting this question, if anybody can help me decide before I start making my piston and cylinder for Jan ridders Marc vertical flame eater. I will be starting these over the weekend. My question is this I am planning to make my piston from cast iron but I am still undecided on choosing brass or cast iron for the cylinder, I would like to use brass as it looks nicer but would cast iron for both work better ?
Cheers
 
I have no experience with using a cast iron piston and brass cylinder, but I have made brass cylinder flame eaters. I used graphite for the piston and the engine is an excellent runner.

Kel
 
Thanks Kell i have decided to make it from brass, from the information i have gotten here it should work out.
 
Cast iron for both definitely. When it gets hot there will either be too much or too little clearance, causing the engine to stop working or sieze up solid.

 

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