Originally Posted by dameetz
I just got my self a Sirio Evo 3 STI and it has just got through 5-6 tanks of race tuning. Somehow when I check the engine the crankshaft has got lots of play which indicate bearing worn out. This happened to my friend's engine too and he too has about the same tanks through it. Is this normal? And by the way what is the size of the bearings? I wanted to order replacement from Boca Bearing.
At the last EC, (sorry, don't know if was Andrea Rossi or Bertin or whatever.. but was someone from Sirio) told to a friend of mine who isn't nothing unusual to get the main bearing worn after ending the break-in of the STi's along the conrod (in fact, the first ones were a nightmare to break-in them). I changed the main bearing to mine and works like a charm.
Main bearing isn't much expensive, so if your one has developed play, change it and enjoy the engine.