Posted by Indiana Ken on September 29, 2016 at 06:26:38 from (66.249.235.185):
In Reply to: Turbo or not posted by Texasmark1 on September 29, 2016 at 05:07:58:
[quote="CVPost-Texasmark1"](quoted from post at 05:07:58 09/29/16) For altitudes below 1000', why would a person opt for a lower cu. in. turbo charged engine rather than a larger cubic inch naturally aspired engine....133 cu in, 43 hp vs 127 TC 52 hp when trying to decide on which engine and preferring the higher hp?
Does a turbo over nat. asp. cause the engine bearings (bottoms) to wear faster?...."
Typically a turbo charged engine will make more HP, at a lower RPM, using less fuel, than a similar size NA engine. For an engine designed for a turbo, bearing wear would not be a concern. If you want HP and a nice power curve go with the turbo.
The difference in displacement is 4.5 % (reduction) which is nothing. The turbo more than makes up for this using waste heat fom the exhaust to increase the air density in the inlet manifold, note the 21% (increase) in HP.
If HP is the objective then a turbo is the path to it.
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