Originally Posted by makaveli200369
No I just heard a 6.0 spool up the other day and it was pretty much instant. I'm wondering if I'll get the same performance out of a dual ball bearing with all the supporting mods.
THe ball bearing and the variable geometry turbo are 2 different animals with the same purpose. The ball's a/r is fixed so it can only operate under one presssure input that is fixed with the wastegate. The variable can change it's a/r ratio infinitely between 2 set points. This gives it a huge advantage over the fixed turbo's. If you were to match up performance , it would be in the size of the compressor and it's wheel diameter. I believe the the ball has a slight advantage here, as i think the 6.0 turbo is a GT37 variant. The ball bearing works fine with stock injectors , and I believe, and you and ask others here, once you add the injects the Garrett wants to surge on you.