Sorry to both of you for obviously using my brain instead of going with the crowd and believe a couple of people who obviously have something to gain by scaring others who just might read the crap you have been spewing from the hole in your faces. It did not fail and I did do it and if you bothered to read before you typed (assuming you can read) you would have noticed that I said I did not build the bottom end of this motor! Someone else did. The thrust bearing swap would have worked just fine if everything else in the bottom end had been in order. At the same time the thrust bearings would not have done what they did in the first place if it was not for me letting a machine shop do my work for me. Believe me that is the last time I let a machine shop that is not experienced with SR20's do anything for me again.