Originally Posted by
Roelof
You may think the break in is compleetly wrong because the cooled and heated parts of the engine in a normal situation the piston and sleeve will take a different shape. That is true, but because the piston is not heated to combustion temperatures there is still enough room to shape it right with only a short break-in process when firering up the engine.
As a discussion about my Ielasi 9CL piston some pages back that it was compleetly done wrong by only touching the upper edge is showing a perfect used piston after the first rod replacement and the engine is still going strong after 15 liter of use.
Lets say this process brings the engine into a perfect matching piston/sleeve set which can not be done by any machine when manufactured.
After break in:
Here the pic after the 1st 5 liter of use:
http://www.rctech.net/forum/attachme...d-dsc_1456.jpg
Hello,roelof, i also have one of these engines and must say, it took alot of time in ebis to get pinch that was acceptable. Still prefer OS engines fit bettet than nova. From the pic, your squish is set perfect. I bet its pretty low, thats how i find them to work best and maybe, machine the bowl to put trapped compression close to where it is stock. Good job roelof