Quote Originally Posted by mehrshadvr4 View Post
it sounds good and has 7 main bearings. the most reliable i6 is 2jz. the rest are equal if not worse than 6g72. the rb has a lot of issue. can't rev too high or you starve the bearing with oil and such and that's even worse with upgraded oil pump. i read somewhere that it's not super reliable either when road race pass 800hp even with dry sump. 6g72 has weak crank issue. upgrade the crank and dry sump and you have a very reliable engines. pit road m's car makes 900hp with stock crank and no dry sump and it runs no problem for hours in the race. RB is like rotary engines. it has so much love that people will tune them no mater how unreliable they are.
What weak crank issue? If you keep up with maintenance and have a good tune plus proper supporting mods, even the "weak" 2 bolt doesn't run into issues until around 700hp. And with how much money it takes to get 700hp, money isn't an object for you anymore. Rotaries and RBs are the same way, in stock form if you keep up on maintenance (like the 6G72) they will run for a very long time, but start running into problems as you crank up the HP. With the money it takes with all 3 motors to reach very high numbers, you are past the point of money mattering to you.

Most reliable I6 was the 4.0L Jeep ran for the longest time in the Cherokees and the Wranglers.