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JimFlat6 said:
I think the last Porsche with best output/ displacement ratio was the 1972 911S with 190hp from 2.2 liters.
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dsac6 said:
Thank you that was helpful, but now that brings up 2 questions.
Why does BMW and Audi (next RS4 420 hp, 4.2 liter engine) manage to make these amazing engines and put them in cheeper cars. I'm not quite convinced that porsche couldn't do it.Second ?, so is porsche making high quality cars very efficiently(therefore being able make a high profit) or are porsche buyers kinda not getting as much as they should when they buy their car(paying too much for what they get)? I'm referring to the fact that they are the most profitable car company.
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adam0861 said:
i think it has alot to do with the configuration of the engines. porsche uses 'boxer' engines. these flat or horizontally opposed motors have their strenghts and weak spots. strenghts include a lower center of gravity, which aid in handling, and the fact that they are very smooth. a weak area for this type of motor is specific ouput ie hp/l. hope this helps.
Mar 16, 2005 5:10:11 PM
Mar 16, 2005 8:24:18 PM
Mar 16, 2005 10:04:36 PM
Mar 16, 2005 10:10:30 PM
Mar 16, 2005 10:52:57 PM
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adam0861 said:
hi grant,
the gt3 does produce alot of power for it's engine size, but so do alot of other less expensive engines in less expensive cars. there must be a reason that everyone else (and porsche, with the carrera gt) goes with a v configuration when they build high performance engines. i think the flat 6 layout was a natural evolution for porsche when they finally got rid of the vw based flat fours back in the mid sixties, and it's been a matter of tradition/cost ever since. something tells me that if porsche had started their 40 year campaign of developing a motor with a v-6 instead of a flat one, we'd be seeing alot more power than we currently are. am i way off base here? don't get me wrong, i for one love the flat 6's.
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JimFlat6 said:
Maybe I missed this mentioned somewhere in the discussion above, but a horizontally opposed engine offers one big advantage over other designs, and that is a lower center of gravity. Thats a good thing in a sports car
Ferrari used a flat 12 in the Boxer and Testarossa, but had to compromise optimal layout height because of the transaxle
design.
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Grant said:Quote:
JimFlat6 said:
Maybe I missed this mentioned somewhere in the discussion above, but a horizontally opposed engine offers one big advantage over other designs, and that is a lower center of gravity. Thats a good thing in a sports car
Ferrari used a flat 12 in the Boxer and Testarossa, but had to compromise optimal layout height because of the transaxle
design.
Yep, I had that in the above mess tooIt does help alot!
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Mithras said:
I think Porsche flat 6's can have quite high specific outputs compaired to most other normally aspirated engines. I know my 3.0 ltr. 911 makes 370hp at 8400 rpm and will rev to about 9250 rpms quite willingly (though only for about 35 hours or so...)
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Grant said:
Did you see the new issue of Panorama - sweet 550 Spyder next to a Boxster? Can you imagine what a 550 must handle like? 960 lbs dry weight with very low mounted mid-engined flat-4 with 4-cams and high revs. Less than 40" tall (a foot lower than Boxster). Makes the Boxster look like a Suburban![]()
Mar 17, 2005 9:49:03 PM
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Grant said:Quote:
dsac6 said:
Thank you that was helpful, but now that brings up 2 questions.
Why does BMW and Audi (next RS4 420 hp, 4.2 liter engine) manage to make these amazing engines and put them in cheeper cars. I'm not quite convinced that porsche couldn't do it.Second ?, so is porsche making high quality cars very efficiently(therefore being able make a high profit) or are porsche buyers kinda not getting as much as they should when they buy their car(paying too much for what they get)? I'm referring to the fact that they are the most profitable car company.
Well, I would say it's a little of each. The GT3 motor is far better than any motor built by Audi or BMW. In fact, it's one of the very best (in terms of performance, technology, track-readiness, longevity and reliability) of any car that's ever been built for the street.
And, yes, Porsche is charging too much for some of its products and delivering too little (but if people buy it - then you can't really call it overcharging - that's the markeplace). There are many who think the 997S (if not the other models) should use something similar to the GT3 motor for nearly a $100k car. I think the GT3 motor costs over 4x what the M96/97 motor costs Porsche to build and Porsche is living on its reputation there (and dishonest marketing - an integrated dry sump is just a wet sump) - maximizing profit.
Mar 17, 2005 10:49:58 PM
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Jeff (in SF) said:Quote:
Grant said:Quote:
dsac6 said:
Thank you that was helpful, but now that brings up 2 questions.
Why does BMW and Audi (next RS4 420 hp, 4.2 liter engine) manage to make these amazing engines and put them in cheeper cars. I'm not quite convinced that porsche couldn't do it.Second ?, so is porsche making high quality cars very efficiently(therefore being able make a high profit) or are porsche buyers kinda not getting as much as they should when they buy their car(paying too much for what they get)? I'm referring to the fact that they are the most profitable car company.
Well, I would say it's a little of each. The GT3 motor is far better than any motor built by Audi or BMW. In fact, it's one of the very best (in terms of performance, technology, track-readiness, longevity and reliability) of any car that's ever been built for the street.
And, yes, Porsche is charging too much for some of its products and delivering too little (but if people buy it - then you can't really call it overcharging - that's the markeplace). There are many who think the 997S (if not the other models) should use something similar to the GT3 motor for nearly a $100k car. I think the GT3 motor costs over 4x what the M96/97 motor costs Porsche to build and Porsche is living on its reputation there (and dishonest marketing - an integrated dry sump is just a wet sump) - maximizing profit.
To be fair, I don't think Porsche is alone. Have you seen the prices of BMW's or Mercedes' options? $1,100 for a sunroof?! $2,500 for Keyless Go!!
I also don't get hung up on 'true' dry sump vs. Porsche's current definition. Once upon a time, wasn't a "roadster" a 2 seat car without a top and maybe a tonneau cover for the passenger compartment? Wasn't a "coupe" a 2 door car? There are many companies who describe their convertible models these days as roadsters or "coupes" (new 4 door Benz CLS) but it doesn't seem people are as pissed at those companies as the folks here on these boards are about Porsche's marketing. Why is that?