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Originally Posted by boxmonkeyracing
and why don't they offer longer warranty's if it was soo damn good? sorry we are talking current engines and models not the 90's.
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GM still sells cars with the Northstar as a powerplant, so it isn't getting a pass yet. As for the warranty question, Hyundai and Kia very arguably offer the best warranty in the business, are you saying they therefore must build the most reliable cars? If not, why wont GM or anybody else match them?
Of course the answer is that how reliable a car is and how much warranty it has on it are mutually exclusive.
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Originally Posted by boxmonkeyracing
I know for a fact you add boost pressure to a line the more boost you have the more likely it will go boom. there are many factors and efficiency is very important. but if it's not the end all be all of boost. you are arguing efficiency. reliability is what I care about. and the fact of the matter is it will shorten the life of an engine when you add more it shortens the life.
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Nope, you're leaving out waaay to many variables. For example, speaking specifically to a concern for reliability......Assuming decent installation and design in both cases I would much rather be running an intercooled Eaton running 16psi of boost than a typical turbocharger running 12psi of boost without an intercooler, and I virtually guarantee you my engine would too for reasons that should be obvious. The heat in a turbo setup like that is going to do seriously bad things long term and it's going to cost me power even if turned the blower back down to an identical 12psi.
That is a generic comparison to be sure, but it makes what should be a very obvious point very clear, boost is not just boost and more boost does not necessarily equate to less reliability.....there are too many variables to make such a generic statement. The heat in a turbo setup like that is going to do seriously bad things long term and it's going to cost me power even if turned the blower back down to an identical 12psi.
That is a relatively extreme example of the situation, but it makes my point. In that comparison the advantages for the higher boost motor are found in increased thermal efficiency and what that means to both power and reliability. One of the major advantages of the TVS design over the older traditional rootes setup it replaced? A 75% improvement in thermal efficiency.
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Originally Posted by boxmonkeyracing
From my understanding of the two blowers of what I've read here. all you are really doing is increasing the amount of boost. not efficiency.
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According to Eaton there is a 75% improvement in thermal efficiency.