Quote:
Originally Posted by JCL
Since you bring up revs, let's consider two high output BMW engines...
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Going back to the original post in reference to the new N20 2.0 4-cylinder turbo, I think a better comparison is to the engine it is replacing, which is what my initial comments were based on. Certainly you wouldn't bet against the N52/N53 lasting longer without major work, would you?
Quote:
Originally Posted by JCL
Sidenote: diesels typically have higher compression ratios in order to ignite the air-fuel mixture, achieved with higher boost. Gasoline turbos are stressed less, as peak cylinder pressures are lower.
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Of course diesels have higher compression ratios, but to take from one of your previous posts, diesel engines are designed for higher compression, so they are not more stressed than a gasoline engine.
Again, it is the additional heat in a gasoline turbo that makes it a poor long-term proposition.
08-31-2011, 01:42 PM
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