Hello Everyone,

I converted a mitsubishi 33cc

After a lot of experimentation, I added a walbro carb from a DLE 50cc and a tuned pipe of a 60 size engine and presurize the tank and the engine runs great, never had to move the needles again, great idle, great transition and getting 7,500 RPM with a 18x6 wood Turnigy prop.

I live in Mexico city so I fly at a very high altitude and I have received the recomendation that raising the compression ratio of theisse engines would be of great help specially on this altitude

Could anyone tell me hoiw to raise the compression ratio.

My objective would be to be able to use a 19x8 prop on this engine maintaining arround 7,500 rpm to get a better performance out of it

Thanks everyone.