Hey guys i have an H23 turbo in my car and i was woundering what could be wrong with my car. See i have had two fullt built botton ends and they both spun the main bearings. The H23 blooks have bin both sleeved and balanced crank's with JE pistons and Crower rods.
The only obvious thing i can think of would be the tightening of the main bearings. did you use plasi-gauge?
What sort of engine management are you running? How many pounds of boost are you pumping into the engine?