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True or False: supercharging an NA motor puts absolutely no additional stress on the motor

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Old 01-16-2005, 01:21 PM
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ATH
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Default True or False: supercharging an NA motor puts absolutely no additional stress on the motor
Some guy on 6speed is trying to make the statement that supercharging the 997 s, with an 11.8:1 compression ratio, will not put any additional stress on the motor. I told him otherwise, and he doesn't believe me...

So, what do you guys think? I'm trying to figure out how increasing the compression ratio isn't any harder on the motor...
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Old 01-16-2005, 01:24 PM
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Default Re: it will I build BB supercharged motors for boats and yes they do put alot ...
of stress on them but dang you get a ton of INSTANT power with 871's and up
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Old 01-16-2005, 01:25 PM
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Yah, they are great - but you can't expect the engine to be just as happy
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Old 01-16-2005, 01:28 PM
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Default False. - No pain, no gain. ;)
Unless the pistons/rods/crank get hit harder by increased combution pressures, there won't be any power gain.
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Old 01-16-2005, 01:35 PM
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11.8:1, its gonna disenegrate pistons unless he runs 114 octane 24/7
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Old 01-16-2005, 01:36 PM
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It'll be happy if you build the engine accordingly with proper compression ratio and forged goodies.
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Old 01-16-2005, 01:41 PM
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Right, this guy meant just bolt one on and go - no internal work at all
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Old 01-16-2005, 01:45 PM
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Default Do link to the post please. He is totally clueless. While the porsche internals are likey strong
enough to handle it that CR is way to high to sustain even low boost pressures without dramatic pulling of timing.
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Old 01-16-2005, 01:45 PM
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So, what boost is he talking about?
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Old 01-16-2005, 01:47 PM
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negative boost no extra strain at all.
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