miataturbo.net-like debauchery thread (about the ND or something) - Page 65 - Miata Turbo Forum -Boost cars, acquire cats.

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Old 06-30-2015, 07:00 PM   #1281
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no, it's a skyactive turbo diesel motor.

see mazda logo in BG and skyactive on VC:


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Old 06-30-2015, 07:49 PM   #1282
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Quote:
Originally Posted by emilio700 View Post
Nope. More like a clutch type in action. This is a generic pic. The Mazda diff has a separate stamped steel bowl shaped plate with radial grooves that sits over the cones and bears against the outer housing. The one in this pic has no plate so the cone bears directly onto the housing. Seems crude but apparently it works. Early feedback is that the OEM ND LSD has a fairly low locking ratio. This heard second hand from someone who would have direct experience with it. I haven't driven an ND yet.
Same as a lot of the american "posi" lsd. I know the ford tru trac version in the mustangs lasts about half a season of auto-x between rebuilds on slicks if you're lucky.
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Old 06-30-2015, 07:57 PM   #1283
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That is a really impressive turbine inlet....thing
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Old 06-30-2015, 08:34 PM   #1284
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no, it's a skyactive turbo diesel motor.
Serious question: is there a meaningful difference?
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Old 06-30-2015, 09:17 PM   #1285
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Serious question: is there a meaningful difference?
yes. One runs on diesel fuel.
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Old 06-30-2015, 09:38 PM   #1286
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I worked as a "product specialist" in Canada for Mazda during this year's autoshow season. The answer we were given to field "why no diesel in any Canadian models" was "because US customers won't buy it and Canadian certification runs on the back of US certification".

Just sayin'
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Old 06-30-2015, 10:27 PM   #1287
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I saw it in person--
You came all the way to NY and didn't call me down to buy you a foofy girly drink? You bastard.
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Old 06-30-2015, 10:32 PM   #1288
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I posted that I was going to be at the Glen! It was my birthday too, you could have kept me warm.
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Old 07-01-2015, 12:46 PM   #1289
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Default miata.net-like discussion thread (about the ND or something)

The 310hp 2.3 ecoboost in the Mustang is in the same family of engines as the MZR and may one day be a viable swap candidate for the NC EDIT: but not the ND.

Last edited by sixshooter; 07-01-2015 at 03:49 PM.
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Old 07-01-2015, 12:50 PM   #1290
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<p>Really interesting wastegate thingy. One turbo spools until the wastegate opens then you get exhaust to both turbos?</p>
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Old 07-01-2015, 12:51 PM   #1291
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The 310hp 2.3 ecoboost in the Mustang is in the same family of engines as the MZR and may one day be a viable swap candidate for the NC and ND.
Oh cool. So the SkyActive is still based on the MZR block design? Didn't know that.
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Old 07-01-2015, 01:06 PM   #1292
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<p>Really interesting wastegate thingy. One turbo spools until the wastegate opens then you get exhaust to both turbos?</p>
the small turbo makes insta boost, then once the large one starts to boost, the wastegate opens and the smaller turbo doesn't spin as hard and most boost is made with the large.

large turbo runs ALL OF IT levels of boost.
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Old 07-01-2015, 01:06 PM   #1293
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Oh cool. So the SkyActive is still based on the MZR block design? Didn't know that.

The diesels are still based on 60-70s blocks, too.
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Old 07-01-2015, 01:07 PM   #1294
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<p>Really interesting wastegate thingy. One turbo spools until the wastegate opens then you get exhaust to both turbos?</p>

You always get exhaust to both, the wastegate just routes back into the 2nd one so you don't lose energy.
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Old 07-01-2015, 01:17 PM   #1295
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The Skayctiv 2.0L is not based on the MZR. It has more in common with a 4B11 Mistubishi motor than an an MZR once you get inside.
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Old 07-01-2015, 03:47 PM   #1296
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The Skayctiv 2.0L is not based on the MZR. It has more in common with a 4B11 Mistubishi motor than an an MZR once you get inside.
^Yep, I was wrong. The ecoboost swap is only good for NC's.
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Old 07-01-2015, 03:48 PM   #1297
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Oh cool. So the SkyActive is still based on the MZR block design? Didn't know that.
It's not. I was wrong.
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Old 07-01-2015, 04:04 PM   #1298
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Quote:
Originally Posted by emilio700 View Post
The Skayctiv 2.0L is not based on the MZR. It has more in common with a 4B11 Mistubishi motor than an an MZR once you get inside.
<br /><br />
<br /><br /><br /><br />
<br /><br />I'm gonna take this as a product announcement <img src="images/smilies/smile.gif" border="0" alt="" title="" smilieid="1" class="inlineimg" /><br />
<br /><br />When can I buy the 949 4B11 swap kit. That could be fun.
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Old 07-01-2015, 04:08 PM   #1299
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Everyone has a bunch of "feelings" when it comes to what's faster stock-for-stock.

I should have taken my own advice and not touched the poop.
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Old 07-01-2015, 04:19 PM   #1300
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Quote:
Originally Posted by aidandj View Post
<p>Really interesting wastegate thingy. One turbo spools until the wastegate opens then you get exhaust to both turbos?</p>
Quoting Automotive Engineering Magazine:
The diesel engine’s boosting setup, comprising a pair of Garrett turbochargers and a sophisticated air-to-air intercooler array, is based on the production Sky-D. It’s the first motorsports use of a compounded turbo system, Tremblay claimed. A large low-pressure turbocharger draws in and compresses ambient air, feeding it into a smaller high-pressure turbo which compresses the air again and forces it into the intake manifold.

Compared with a single turbocharger, the compounded-turbo arrangement provides a greater range of operating efficiency, [SpeedSource President Sylvain] Tremblay said. However, it is more complex and difficult to package in the car. The arrangement is not to be confused with turbo-compounding used on some reciprocating aircraft engines and the Detroit Diesel DD15 heavy-truck diesel, where one of the turbines is connected mechanically to the engine’s crankshaft.

And it’s not sequential like on some gasoline turbocharged engines,” Tremblay explained. “One turbo charges the other and they’re not regulated mechanically in any other way other than by the actual computer control mapping of the turbos. As one compressor stalls, the other picks up that particular boost. It’s a very effective system for the Mazda race diesel.”

Maximum boost pressure used during the race will be in the 50-55-psi (345-379 kPa) range.

Mazda races compounded-turbodiesel, new synthetic fuel - SAE International
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