11-26-2017, 03:30 PM | #15 |
Drives: 2021 Tesla Model 3 LR Join Date: May 2016
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HP/liter is heavily biased towards DOHC vs OHV. The engine breathes better due to 4 valves vs 2 valves in the OHV setup and can rev more than the OHV. Thus you don't need to have a big of a displacement to make the power. But you do need to rev the engine out to make such power( the Voodoo V8 is a perfect example of this) and is a physically bigger motor thus creating packaging issues( the Coyote V8 will not be able to fit in the Corvette).
The OHV design can't breath as well nor can rev as high as the DOHC architecture, so need displacement to make power. The benefit of using displacement to make power is a ton of torque being made down low. Also, an OHV engine is physically compact. How the LT1 can fit in the Corvette. Heck its the reason why the Small Block V8 is such a popular crate engine. Can throw it in a Porsche, Miata, etc with very little mods. |
11-26-2017, 04:22 PM | #16 | |
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Quote:
End thread.
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11-26-2017, 06:02 PM | #17 |
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I’m confused - I thought I was on a Camaro forum, not an RC engine forum?
https://www.thoughtco.com/how-is-rc-...asured-2862919
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11-26-2017, 07:11 PM | #18 | |
Drives: 2017 Camaro 1SS Join Date: Oct 2016
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Quote:
http://www.mercuryracing.com/automotive/ |
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11-26-2017, 07:53 PM | #19 | |
Drives: 2017 Camaro 1SS M6 Join Date: Apr 2015
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Quote:
The engineers are targeting a specific power curve, brake specific fuel consumption, emissions, physical size, weight, and cost. Those are the items that really matter. If an engineering team created a 7L engine that made 550hp, physically smaller AND lighter than a LT1 or Coyote, EPA rated 25city/40highway, and cost less than a LS1, would you consider that a poor design because it's HP/Liter is not very high compared to others, even though it nails all the metrics that matter?
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Best 1/4 Mile: 12.24 @ 115.9 mph Last edited by vtirocz; 11-26-2017 at 08:26 PM. |
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11-26-2017, 08:07 PM | #20 | |
Drives: 6th gen Join Date: Aug 2013
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Quote:
That Efficiency you and other “car” people refer to is taken out of context from that engineering book. Outer dimesnsions are the tangible element. Internal displacement doesn’t effect me whether it’s 2 or 6.2 liters inside. It runs the number and gets the mpg |
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11-26-2017, 08:12 PM | #21 |
The Milano
Drives: 2017 Firefly ShipWorks Join Date: Jun 2010
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If an engineering team created a 7L engine that made 550hp, physically smaller AND lighter than a LT1 or Coyote, EPA rated 25city/40highway, and cost less than a LS1, would you consider that a poor design because it's HP/Liter is not very high compared to others, even though it nails all the metrics that matter?
Its a less efficient design. 7L @ 550HP would only be 78hp per liter. GM can (and does) easily produce an engine that is +90hp per liter. Your logic reminds of the L75. 7.4L with 27hp per liter. I had one in an f-body. If you care to search my pics, you'll likely find a few pics of her. With the world moving toward a "road tax" based on engine volume, HP per liter is THE metric for many global car companies. Great conversation folks. I for one am looking forward to the day when GM decides to crank out the V8 beasties. The current generation engines are good, very good when compared to the past, but the future has lots of room to improve. __________________
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11-26-2017, 08:30 PM | #22 |
I used to be Dragoneye...
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I dunno...it sort of seems to me like you posted a question...didn't like any of the responses, so you rejected them.
Just had to say it. I feel baited. |
11-26-2017, 08:35 PM | #23 |
The Milano
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Actually, I like many of the responses and appreciate the time it has taken to read and reply to this thread. It is an interesting and passionate group.
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My first Love. She was called "Miss Carriage" (still cry when I think about her)
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11-26-2017, 08:57 PM | #24 |
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First is my M6. Second is my wife's A8.
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11-26-2017, 09:51 PM | #25 | |
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Location: Arizona
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Quote:
100% - nail on the head This was a troll post. There was no discussion. OP's views are set in stone regarding HP/L. It is THE benchmark for "engineering prowess" |
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11-26-2017, 11:08 PM | #26 |
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11-27-2017, 12:35 AM | #27 | |
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Quote:
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11-27-2017, 05:41 AM | #28 | |
Drives: '17 2SS H50 Join Date: Mar 2016
Location: Louisa, Ky
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Quote:
Heath
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