I usualy avoid Engine break in discussions as there is more nonsense than sense spoken and written.

However I must prevent you from destroying your engine, which you surely will if you follow the instructions so far given.

If you have purchased a high performance engine can I assume you have some knowledge?

basicly the engine should be broken in as it is intended to be used. Use the same fuel, Tank setup and exhaust equipment that will be used during it's operating life. During break in the engine must be brought up to it's operating temperature and RPM. This process should be carrried out with a rich two stroke needle setting. Do not let it four stroke. To achieve the required RPM with a rich needle use a smaller propeller than normal.

There is little point in "Breaking in" an engine rich and cool, and then sticking a pipe on it and heating it all up.

If you need more information email me.

I will not argue about this on the Forum.

Ed S