My truck has been at the shop for two weeks now for a rebuild. Ok bare with me, I am no mechanic and have no clue what I am talking about. Maybe someone can help me or understand me. My mechanic says everything runs fine now that the engine is rebuilt, but then tells me there is a little tick in the bottom end where the #4 cylinder is. The only thing I did not replace was the crank
(due to his suggestion not to). Now he is telling me that the tolerances are at .0015 on 1-3 cylinder but at .003 on the #4. Now he did not tell me what this means. I am guessing this maybe how much the previous rebuilder turned the crank?? Anyways he tells me if he can find a bearing that has a tolerance of .0025 to .003 that this will fix the problem. Now he tells me today that no one offers any such tolerance level on a bearing!! I am stuck, the only thing he tells me I can do is tear the whole engine back down to replace the crank, or live with the tick (and hope nothing goes wrong). <img src="/forums/images/graemlins/confused.gif" alt="" /> If anyone even at all understand what I am talking about, please feel me in. I hope someone may chime in and say "yeah I know what bearing it is and where you can find one with that kind of tolerance". My mechanic told me .003 was the top of toyotas tolerance level (for whatever he read). He told me he had to mic it, if that helps!! He also told me, it sounds like the piston is slaping at the bottom of the block (that is the ticking). But that the bearing would fix that without the crank. Please help if anyone can, I am alot of money into this rebuild!! Don't tell me to find a new mechanic, because obviously I can not afford to rebuild it again. He also told me, it could be driven like this for ever, if I don't rev it too hard. HUH????
