Toyota Repair: Toyota 3VFE Engines, camry xle, rod bearing

Question
I own a '93 Camry XlE , had it for a while. It has the V6 engine (3 VFE) . Originally the engine let go and a rod went through the side of the block!! Not a happy day. Anyhow, being a tech and have been for the last 20 years, I summed it up to high mileage and tired. Car had 150k on it! So, I really didn't question it at this point. However, I decided to keep the car after pricing out new ones and was able to locate a block at a local dealer. I sent it out and had it completely machined and all that needed done taken care of. I installed new oil pump, water pump, etc, etc, etc. In other words I did it correctly! And spent several hundred dollars. Well, here's the problem...after about 10k on it , it did the same thing!!!! I serviced it regularly and all and it was running fine. I have not torn it down and don't care to at this point but it is in the exact same location as the original engine damage! A rod through the side of the block! I am asking if you have any information about this problem? I heard through some sources that Toyota had an engineering problem with these and didn't own up to it unless absolutely necessary. I guess not all cars had the problems but there were a few. Lucky me, huh?  Any info would help. I am baffled. I've rebuilt engines in the past several times and never a problem. Also to get 10k is past the proven /break -in period so you would think you're home free.  

Answer
I know of no engeneering problems with this engine which is normally very reliable, I have lot's of inside information available to me and if there was such a thing I would know about it. I'm not sure what is going on here but you being a technician should know that this condition is a result of a lack of lubrication, not enough lubrication to the bearings and there goes the rod bearing and then the rod breaks, can't be of much help here other than tell you why this probably happens, there is no reason for a bearing that has the proper clearance and oil supply to fail, the fact is this engine is done and there is now no way to find out why this happened other than speculation, which is what I just did.