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Honda Earth Dreams turbo motor
Brag box spotted in Columbus airport. 1.5L 16v DOHC, 16psi, 174 hp at the crank. Congratulation Honda, you just invented the B6 circa 1990 (with some help from MT.net). Seriously, how is this motor making that little power at 16psi? Is it just strangled with emissions requirements? https://cimg5.ibsrv.net/gimg/www.mia...2d571e4ac.jpeg https://cimg9.ibsrv.net/gimg/www.mia...a96bc16fc.jpeg |
Probably a tiny turbo built to be emissions compliant and get 30+mpg.
"Exhaust-port passages cast directly into cylinder head (eliminating separate exhaust manifold)" how many other manufactures do this? |
Their #1 goal is likely efficiency, not power.
Originally Posted by HeavyD
(Post 1465815)
.
"Exhaust-port passages cast directly into cylinder head (eliminating separate exhaust manifold)" how many other manufactures do this? |
Originally Posted by 18psi
(Post 1465816)
Their #1 goal is likely efficiency, not power.
Everyone and their mother, for several years now |
Originally Posted by HeavyD
(Post 1465815)
Probably a tiny turbo built to be emissions compliant and get 30+mpg.
"Exhaust-port passages cast directly into cylinder head (eliminating separate exhaust manifold)" how many other manufactures do this? |
Also keep in mind that this is probably designed for something like 300k miles, with an idiot driver, and inferior fuel.
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And the dumb thing is all these turbo motors only beat the gov't mandated steady state tests, in the real world they typically get worse mpg.
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Originally Posted by Schroedinger
(Post 1465810)
Seriously, how is this motor making that little power at 16psi? that transmission looks larger than the motor itself. |
Probably.makes 16.5psi at like 3k and then runs out of puff at 5k. Curious what the torque curve looks like. Most of these new tiny turbo engines I have seen make everything down low and then no HP up top.
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Honda hopes and dreams
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Originally Posted by x_25
(Post 1465833)
Probably.makes 16.5psi at like 3k and then runs out of puff at 5k. Curious what the torque curve looks like. Most of these new tiny turbo engines I have seen make everything down low and then no HP up top.
Driving a car that is gutless below 5k and makes it all up top is ANNOYING to drive on the street. Hence my BRZ is now gone and replace with a turbo 6 that makes max twist from 1400-5400 RPM.......but doesn't completely die on the way to the 7k redline. |
Yup! I have been loving my M45 just for this reason. 2k, put foot down, 5psi and off we go. It doesn't make any more than that though....
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I'm also guessing it runs an atkinson/miller cycle to up the efficiency.
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Originally Posted by x_25
(Post 1465839)
Yup! I have been loving my M45 just for this reason. 2k, put foot down, 5psi and off we go. It doesn't make any more than that though....
https://cimg7.ibsrv.net/gimg/www.mia...bd7124c2c9.png |
On the Hondata website you can see dyno's of stock and remaps.
https://www.hondata.com/flashpro-2016-civic Click on the dyno tab. |
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Originally Posted by x_25
(Post 1465839)
Yup! I have been loving my M45 just for this reason. 2k, put foot down, 5psi and off we go. It doesn't make any more than that though....
https://cimg7.ibsrv.net/gimg/www.mia...28c3e6f7f5.png |
1 Attachment(s)
For the last couple of years Lexus has been going over to 2.0L turbo engines for the smaller cars and base models. I recently got a chance to look at some datalogs of how they run. Theyre hitting full boost below 2k rpm and holding it out to ~5k before it starts tapering off. Whats really crazy is that its running stoich in boost up to around 5k rpm before richening up a bit. Were talking roughly 20 psi of boost at 14.7:1 AFR.
EDIT: Here is a dyno of a stock IS200t vs an ECU flash someone has developed to make it push more boost Attachment 229474 |
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Originally Posted by Full_Tilt_Boogie
(Post 1465859)
For the last couple of years Lexus has been going over to 2.0L turbo engines for the smaller cars and base models. I recently got a chance to look at some datalogs of how they run. Theyre hitting full boost below 2k rpm and holding it out to ~5k before it starts tapering off. Whats really crazy is that its running stoich in boost up to around 5k rpm before richening up a bit. Were talking roughly 20 psi of boost at 14.7:1 AFR.
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