Quote:
Originally Posted by turbomma
Are we taking the cheaper and easier way out by not doing the above?
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In a word, yes.
To properly increase performance of an engine via turbo or supercharging AND maintain the same durability as the stock motor, you should be replacing pistons, connecting rods, lowering compression ratio, etc.
With that said, as long as you are sensible about the level of boost, ensure the car does not detonate running a conservative air/fuel ratio, properly controlling timing, etc. and not constantly doing full top speed runs, the motor
should last a long time.
How long? No one can say with any certainty as people do not test these supercharged M3 motors for durability the same way BMW does.
Speed costs money period. Pay more up front and have a long lasting, expensive built engine. Or, take your chances and pay less and you
might end up having to pay more on the back end due to catastrophic engine failure.
Of course, there are those with 100% stock M3 motors that have blown up as well.