Thanks Jens for your explanation !
I found this website too, lots of information.
http://modelenginenews.org/
I am going to do more on enginebuilding this authum and winter. I'd like to buy a complete "new" set of equipment. Still trying to find out what i need...
so much to choose.......
http://www.buitelaar.nl/
I made some progress (without lapping, sorry jens) and made a quick and dirty head with high temp O-ring (from a 4-stroke kawasaki valve) for the FP. The engine is a bit dusty and dirty, will clean
her up later this week. Engine has a nice compression, no leaks. Have to make me some new fuel first.