06-23-2010, 03:46 PM
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#11 (permalink)
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A True Z Fanatic
Join Date: May 2010
Location: SLC, UT
Posts: 1,671
Drives: '08 Evo X | '10 370Z
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Quote:
Originally Posted by xbigb4ller69z
I would have to disagree because all bolt on parts are not making the engine work more. Its just making it breathe better than the restricted stock setup. You're not modifying the internals/or Adding f.i to it. Why would a pulley, intakes, hfc and exhaust lower the longevity of a high compression motor? Id like to know.
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Just to clarify here... for the most part when you are looking at increasing an NA motor's output via intake or exhaust mods, you're going to be increasing combustion efficiency. i.e. allowing more fresh air in the cylinder during combustion. More air ==> more power ==> more combustion heat and pressure ==> increased wear on internal engine components.
Now, if you're talking about mods outside of the induction and exhaust systems (lightweight/underdrive pulleys, lightweight flywheels, etc) then you're correct. But there are some technical drawbacks to such items as well when you're considering engine harmonics and such.
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