Originally posted by Top Gun 777
...................... but I can say from what I saw-cranck pin isn't hard enough and bronze they use on conrod isn't that right for this particular aplication. I can sugest them ( Sirio) to coat pin with chrome or make surface hardening with higher number.
Defenetly if conrod broken something is wrong. It can be worn out, but no broken.
Agree with you 150% TG
My Sirio Evo2 after a gallon of fuel has developed an unsual wear between the crank pin and the conrod's big end. I've stoped using it and ordered a new conrod but...... i made a mistake not measuring pin dia and conrod bushing before break-in, so I don't know if only changing conrod is enough.
Do you know what are those stock diameters???
I love my Sirio Evo2, it is the fastest engine I've had so far, and has the new track record here, but..... it would be very expensive to keep it if I have to change conrods or cranks that often....buaahhhh!!!!!
Afm