Honda Earth Dreams turbo motor
02-07-2018, 12:00 PM
#22
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Its got a little liquid/air intercooler. Its actually really easy to overlook because the charge pipe runs behind the engine and the intercooler is tucked up under the intake manifold.
Im not sure if its using engine coolant or if it has its own heat exchanger and fluid.
I think most of these engines are running port injection under load and only using the direct injection for cruise and light load. Could be wrong though.
I bet the engines do probably have some crazy quench though.
Im not sure if its using engine coolant or if it has its own heat exchanger and fluid.
I bet the engines do probably have some crazy quench though.
Last edited by Full_Tilt_Boogie; 02-07-2018 at 12:43 PM.
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02-07-2018, 12:08 PM
#25
And yeah the way DIT pistons are designed, it's a whole nuther ballgame that doesn't require fat afr to keep it together. way over my head
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02-07-2018, 01:03 PM
#26
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I've no experience with the 200t setup, but judging from their 4s setup on the twins it actually switches in various places/loads if/when needed.
And yeah the way DIT pistons are designed, it's a whole nuther ballgame that doesn't require fat afr to keep it together. way over my head
And yeah the way DIT pistons are designed, it's a whole nuther ballgame that doesn't require fat afr to keep it together. way over my head
Then, like the N55 in my BMW it's DI only. So here in about 5-10k miles I get to do the walnut blasting of the intake manifold.
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02-07-2018, 01:57 PM
#27
Do some research and you'll find people are getting stellar mpgs with the 1.5T engines.
Also, like many recent turbo engines, the 1.5T seems to be underrated from the factory. Most people are dyno'ing at the wheels what they are rated for at the crank.
CR-V turbo compressor is slightly bigger and appears to be a bolt-on upgrade for the turbo civic
Check out www.civicx.com if you actually want to learn about these engines.
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02-07-2018, 02:20 PM
#31
Fuelly - Track and Compare your MPG
Looking at 2017 civics with 1.5T engine: data from 9,936 fill ups, 3,157,709 miles = combined average MPG of 34.06 +/- 0.11
2017 Civic EX was EPA rated 31/40, combined of 34.
So...looks like they were mostly spot on?
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02-07-2018, 02:27 PM
#32
This times 100. I know this. I lived it. I tried...
When I worked at Honda R&D there was a group of engineers that every year begged to develop a rwd platform that would use the 1.5T and 2.0T engines. We knew the engines were coming, we knew they would be good. We knew if it was in a decent rwd platform it would be awesome. Every year we got shot down.
In Hondas defense, look at the sales of the new Civic and Accord. A rwd coupe or sporty sedan would sell 1/10th those volumes, if that. The masses want a torquey Civic/CR-V with a CVT. Not a six speed rwd sporty car.
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02-07-2018, 03:10 PM
#34
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- Mechanical empathy precludes me abusing an engine with only delivery mileage
- It was -20, the roads were still atrocious from a recent snowfall, and the car was on all-seasons
Still, it was an interesting experience, not least because I could row my own. The 2.0 liter engine is a detuned version of the one in the R and it runs on regular gas. Torque down low was little soft, but boost builds quickly and the car pulls strongly through the mid-range. While I didn't redline it, there was no discernible rolling-off of power at the top end. I did notice a bit of vibration at around 2,500-3,000 rpm but couldn't say if it was poor NVH control or a wheel out of balance due to packed snow. The transmission itself was just fine - Honda slick with decent clutch feel.
As for the rest of the car, it was a mixed bag. The "Sport" version (which is what your get if you want a manual) had some interesting variation on cloth seats. It was more akin to the top layer of a wetsuit but it was grippy and will probably wear like iron. The interior design was well done, with a digital dash and a prominent screen perched on the dash (albeit better integrated than most). Back seat room was cavernous - when "sitting behind myself" I had 6-8 inches between my knees and the front seat. Styling was okay, with the most controversial feature being the, uh, prominent front beak. Oh, and it's WWD.
Still, it would be a great cross-country touring car. I'm glad that Honda still offers a standard and I hope that enough people opt for one so that it'll continue in the next generation.
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02-08-2018, 07:56 AM
#38
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And apparently the new Civic Type R doesn't even need AWD to compete with the Focus RS and all it's fancy drivetrain tricks.
Toyota is also working with BMW on a Supra/Z4 replacment to have a shared chassis.
Not like the old days, but it's coming around.
Toyota is also working with BMW on a Supra/Z4 replacment to have a shared chassis.
Not like the old days, but it's coming around.
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02-12-2018, 11:11 AM
#39
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real world commutes. Real driving.
Fuelly - Track and Compare your MPG
Looking at 2017 civics with 1.5T engine: data from 9,936 fill ups, 3,157,709 miles = combined average MPG of 34.06 +/- 0.11
2017 Civic EX was EPA rated 31/40, combined of 34.
So...looks like they were mostly spot on?
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