Toymods Car Club Inc: Tech & Conversions => forced inductin 'vs' NA capacity

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CLG
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Perth, Western Australia
Registered:
December 2002

Re: forced inductin 'vs' NA capacity	Tue, 10 February 2004 13:16

Christ, what a difficult thread to read, with everybody arguing their proposal is better?!? Lot's of different tangents in the thread also, with alot of info going nowhere, or double speak. So, my understanding of the original purpose of the thread is the pro's and cons of a forced induction small capacity engine, in relation to a larger capacity naturally aspirated engine?!? I think we can all admit the general consensus behind the larger displacement engines, has been that they have been slow to embody more modern technology in their design. The very nature that turbocharged smaller mills are current technology sees these engines benefit from these features naturally. The very fact that they can have "their wick" turned up to compensate for the lack of capacity, is certainly to their advantage. So, which one is better? If we forget about the performance side of both engines and look at the basics of the original motors for a minute, we are faced with the fact that generally speaking the smaller turbo charged engine will have higher stresses put through it to match the larger capacity engine's power and torque delivery, as well as costing more to gain that power and torque. Based on this premise, which engine would you prefer?!? From a performance perspective, again for both to match the power and torque of each other, naturally the smaller engine will again be subjected to more stress than the larger capacity motor. For the smaller engine to pass the larger engine's outputs, yep you guessed it, more stress than the larger motor. So why can current small capacity forced induction motors outperform larger capacity naturally aspirated engines? Technology! Lets face it comparing the two is like chalk and cheese, and yes you can outpower a naturally aspirated big motor by increasing boost levels in the smaller motor, but where do you want to stop, and is it a fair comparrison? I'd propose a fairer comparrison would be to have both engines naturally aspirated or with some form of forced induction both, and combining power to weight figures, match the two in a series of performance tests, to determine the better alternative. I'll take the larger capacity engine, I can do more with it (when was the last time you saw a race car towed with a four cylinder!!!). And for those of you who don't know, yes I have several varieties of both types of motor in my garage! [Report message to a moderator]

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