"Haaken Hveem" wrote in message
...
Does anyone know some good materials too use in making of racing cylinders
for two strokes?

The problem is that alcohol and nitro mixes create unusual high
temperatures.
It must altso tolerate punishing high revs' (20,000 rpm )

And the piston?

Titanium perhaps?

If you want information from professional engineers who research this
subject with the aid of serious money and well-equipped labs, it's a subject
that has come up from time to time in SAE white papers. You have to pay for
them, but it's cheap if you're serious about building something.

Go to the SAE site and you'll find the publications.

--
Ed Huntress