Thai said:
It's well-known that Toyota released the 5.7L V8 engine to the public with the knowledge that some of them have camshaft problems...this is indeed shameful for any manufacturer, much less Toyota...so let's not put Toyota too high on the pedestal! BTW, Toyota has a well-known history of hiding and denying it's problems also...and i am sure that you're well aware of them.
I haven't heard anything about Toyota knowing about the camshaft casting flaw in the 5.7 prior to release. If they did, don't you think they would have delayed the release more to save the embarassment? This doesn't add up...
Thai said:
OutRNNR, does Toyota know the exact amount of engine affected?? Last i heard, Toyota will not do anything until your engine fails. Basically, for those lucky early owners, they have to continue to drive their "time bomb" until it breaks down, THEN Toyota will replace the engine. This sucks as you can imagine because you can't go anywhere far nor off-road anywhere far from civilization because if it breaks down, then you're screwed. In addition, this also puts your truck in the hands of the Toyota wrench monkeys which is not always a good thing.
So far, there may be 50 motors affected, but this number could grow down the road because that "bad batch" consists MORE than 50 motors i think. Correct me if i am wrong.
I don't believe that Toyota knows the exact number, but they believe it to be less than 50 motors. There have only been less than 20 cases reported, so even worst case 50/177356 = .028 % chance of failure - I'll take my chances.
Thai said:
BTW, i would ask your Toyota salesman why the Sequoia does NOT have the (in)famous TripleTech frame of the Tundra...it tows the same as Tundra (thus eliminating the towing factor).
Anybody who knows anything about a truck knows that frame construction dictates hauling dynamics much more than it dictates towing dynamics. Putting 1500 lbs in the bed of a truck places additional stress on the frame of the vehicle along with the suspension components.
I believe having an open c-channel along the length of the bed is acutually beneficial in a truck vs. a fully boxed frame (FBF) - Here's why: The Tundra's frame is much more flexible than say the F-150's frame because it is less robust and under the bed, the open c-channel is allowed to flex a bit. It's an urban leged among auto consumers that a FBF is superior to a non-FBF. In overall strength and rigidity, this is probably true. However, is this really better?
With a heavy load in the bed a FBF will not flex nearly as much as the TT frame. This means that the rear suspension has to dissipate all of the energy input (in the form of bumps) from the road. At some point, the suspension system becomes overloaded (underdamped) and the wheels will eventually lose contact with the road as the bump input is increased. The Tundra's TT frame is designed to flex more than a FBF and dissipate some of this energy helping the rear suspension do its job - keep the wheels on the road.
If having a FBF is so beneficial why does all of the heavy duty domestic trucks and semi tractors use c channel frames? There is a video floating around probably made by Ford that shows trucks running over a rutted and bumpy surface at a certain speed with empty beds. The F-150 seemingly glides over all of the bumps while the Tundra looks like its bed and cab are on two different frames. There is alot of flex in the Tundra frame causing a resonance and the bed is shaking violently back and forth. This video cracks me up because it allows me to prove why the TT frame is superior. You throw 1000 lbs of weight in each of those beds and the outcome is completely different. The Tundra's frame helps absorb the bumps while the Ford's suspenion is overloaded with the double duty of dissipating all of the vertical energy from the road because the FBF won't flex. This means more vertical wheel travel and less tire-road contact - plain and simple. Cracks me up that Ford would do this test with trucks with empty beds. What the hell do you use a truck for?
The short answer: The Seqouia does not have the hauling capacity and therefore realizes benefits from a FBF (although I still think FBF is overkill).
One other note here: I think we can all agree that Toyota engineers are pretty brilliant minds, right? If they used the F-150 as a benchmark for the Tundra and had the FBF sitting right under their nose, why didn't they use it in the Tundra? The answer is NOT because of cost. I think its safe to say Toyota spared no expense in the design of the Tundra. FBF's are overkill plain and simple. Like building a treehouse out of steel girders.
Whew!! What else ya got?