Thanks for the feedback guys,
In general its more the principal of the thing. If Lexus would have taken the time of day to properly address this problem when they realized how upset I was...things could have been much different.
By properly address.....I mean fully explore any and all possibilities that this noise is not a rod bearing, main bearing, cracked piston, worn lifter, stuck injector....ect, ect. But, to have a song and dance with the Lexus Customer Service crew is an absolute joke. You can never talk to the same person twice, they will not return calls, they rely on purely subjective over the phone diagnostics, the list goes on and on. Further, Lexus has stated that the dealer will not look at this condition again because it is normal. What! Your kidding right? After some subjective conclusions with no diagnostics you make this determination over the phone. We got a winner here....exactly what Chevy is doing with the knocking GM engines. Chevy will not look at or write up any work order on any paper for any knocking complaint. Do you really want this for a car company? I dont.
Bottom line, the techs at the dealer had the same word for word explination that Chevy was and is giving all of its owners. Carbon build up, change the oil weight, normal condition. And I could tell when I was being BS'ed the techs know and you can tell it in the voice. Ditto for the Lexus Customer Service crew....same song and dance like its written out on a bulletin.
As for the Tundra crew. I dont know that this is the same problem. The Tundras seem to have a piston noise right from the get go...or very early on. That is nowhere near the situation I have. It took 4 years and 60k miles to start hearing the noise and once it started...it has gotten progressively worse and worse at a faster rate. That is my problem...this noise is getting worse and worse. That means wear and clearance is getting more and more. Its not rocket science guys.
To hide behind the phone and say its normal just like the Tundra is very poor excuse. Read up on what Chevy has done with this situation....I think Toyota/Lexus is taking the same road. It will bite them in the end. The Lexus Customer Service person said in not so many a word that.....The only way we "Lexus" would do anything about this engine is if the piston exploded and came out the side of the block. Oh fun, lets see how long that takes.
Ford on the otherhand has replaced engines and redesigned the new engines to cure the noise and it has worked. Cheers to Ford.