I have a and older mvvs 26 ccm the number stamped on the bottom of the crankcase is 1382 it is has the red head, on top of the piston are the following numbers 04.05.04
The engine has 8 flights on it and less than .75 gallons of fuel through it I thought I was doing everything correctly but yesterday there was a strange noise coming from the engine I landed the plane checked the engine and it was unusually stiff to turn I dissassembled the enginge and found The conecting rod bearing rubbed against the backplate and you can see a small crack and a blueish burn near the crack from overheating I suppose.
I have not fully leaned out the high speed needle yet. I am using mobile 1 MX2T at 32 : 1 ratio I have the 3226 tuned pipe and am running a 11x 6 xoar prop I did not install the cowl so the motor could get the proper cooling I was simply flying nice easy circles at varying throttle to avoid overheating the new engine
What would cause the connecting rod to rub against the backplate? and what do I need to do to fix it
on the horizon site they show a connecting rod and bearings will this fit this engine
Are the evolution parts the same and will they work in this engine.
any and all help would be greatly appreciatated
Thank you Mike