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Old 07-08-2010, 01:34 PM   #41
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they are not using the hayabusa transmission.
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Old 07-08-2010, 02:36 PM   #42
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Quote:
Originally Posted by turbotyla View Post
they are not using the hayabusa transmission.
He is just proving again (in the same thread) that the reading comprehension on this forum is quiet low.
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Old 07-08-2010, 02:52 PM   #43
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Quote:
Originally Posted by turbotyla View Post
they are not using the hayabusa transmission.
I'm pretty sure Mr. y8s was being facetious as well.
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Old 07-08-2010, 03:06 PM   #44
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Quote:
Originally Posted by y8s View Post
the miata tranny wont hold?
Thats what I was thinking.

I'm just curious how the tranny will hold up to a motor turning 13,000 RPM. More heat, possibly have to make oil coolers for the tranny.
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Old 07-08-2010, 03:17 PM   #45
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Quote:
Originally Posted by miatamike View Post
I'm just curious how the tranny will hold up to a motor turning 13,000 RPM. More heat, possibly have to make oil coolers for the tranny.
Reading comprehension fail, go click the link JKav posted and read.

Quote:
Bolting a Miata flywheel to the Hayabusa's crank was also rejected. Not only is the 11,000-rpm powerband a poor match for the Miata's gearbox, but the crank doesn't have any provisions for anything as big as a flywheel on the end.
and

Quote:
This solution keeps the maximum revs coming into the Miata transmission down to a very manageable 6900 rpm, virtually identical to the engine it was designed to support.
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Old 07-08-2010, 03:34 PM   #46
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Quote:
Originally Posted by turbotyla View Post
they are not using the hayabusa transmission.
Quote:
Originally Posted by Midtenn View Post
He is just proving again (in the same thread) that the reading comprehension on this forum is quiet low.
Quote:
Originally Posted by miatamike View Post
Thats what I was thinking.

I'm just curious how the tranny will hold up to a motor turning 13,000 RPM. More heat, possibly have to make oil coolers for the tranny.
Quote:
Originally Posted by gospeed81 View Post
I'm pretty sure Mr. y8s was being facetious as well.
i've read both articles and the website.

you guys haven't even read this thread--well except gospeedy
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Old 07-08-2010, 03:43 PM   #47
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I only read the first link on the original post, not the second link.

So by that logic this adapter plate is restricting the speed to a managible 6,900 RPM as opposed to the higher 11,000+ what is the point of even doing it since your losing 3,000+ rotations.

So your motor works some 35+% harder than it should for the same output?
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Old 07-08-2010, 03:47 PM   #48
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Quote:
Originally Posted by miatamike View Post
I only read the first link on the original post, not the second link.

So by that logic this adapter plate is restricting the speed to a managible 6,900 RPM as opposed to the higher 11,000+ what is the point of even doing it since your losing 3,000+ rotations.

So your motor works some 35+% harder than it should for the same output?
Umm...no

The adapter just mounts the motor to the Miata tranny, with the Hayabusa output shaft aligned with the Mazda input shaft.

They are using the stock Suzuki gear reduction on the output shaft. You still have the full rev range and powerband of the motor, but the multiplied torque is more useful for a car's weight, and they couldn't attach a flywheel to the 'Busa crank anyway, and they get a stronger gearset.

It's just a geared reduction to a secondary shaft...like you on a Friday night. ( aye keed, aye keed)
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Old 07-08-2010, 03:53 PM   #49
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Quote:
Originally Posted by chance91 View Post
I was recently trying to think of the lightest V8 you could squeeze into a miata.
Plenty of small, lightweight V8s out there...







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Old 07-08-2010, 11:20 PM   #50
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^^ haaaaaa.

I was meaning viable motors. The right answer is probably always the LS1, but the motor weighs about 470lbs, and there are certainly lighter motors from Audi, Bmw, Merc, and others that are production capacity and desirable in some rights. I was kinda thinking of the lightest4-cyl swap you could do and the busa is probably it. My genius *** was thinking Ecotec or some other light 4-cyl aluminum block, but ****, why not just an old air-cooled Vw magnesium block, there's your no power and ultimate weight reduction, huh?

On the other hand, you could put some of those little v8 motors in the passenger seat so you can say you have a V8 in the car.
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Old 07-08-2010, 11:34 PM   #51
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Doesn't Kawasaki make like 1.5L sport bike motor now? Wonder what that dyno chart looks like.

Miatamike, you're on eggshells. Tread lightly.
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Old 07-09-2010, 08:31 AM   #52
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Quote:
Originally Posted by neogenesis2004 View Post
Doesn't Kawasaki make like 1.5L sport bike motor now? Wonder what that dyno chart looks like.
They have a 1352cc in the ZX-14, comparable to a 'Busa. There is a supercharged 1500cc version of the old ZX-12 motor in their jet skis though...

Other than that the only 1.5Ls I can think of are V-twins.


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Originally Posted by neogenesis2004 View Post

Miatamike, you're on eggshells. Tread lightly.
Come on man, torque multiplication is a tough concept...it involves ratios...and fractions! ******* fractions
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Old 07-09-2010, 11:01 AM   #53
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Quote:
Originally Posted by gospeed81 View Post
Come on man, torque multiplication is a tough concept...it involves ratios...and fractions! ******* fractions
I skipped fractions and went straight to decimals.
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Old 07-09-2010, 11:12 AM   #54
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I was referring to his admitted lack of reading. Unacceptable.
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Old 07-09-2010, 07:27 PM   #55
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How about the Triumph Rocket motor?

More of a thumper than a screamer, (bikes wise, still redlines at 7000rpm)
2.3L 150ft/lb in-line 3.
http://www.triumph.co.uk/uk/Triumph_..._III_7686.aspx

Bolt on a Turbo/SC and you've got just over 200ft/lb
http://www.streetfire.net/video/supe...ate_183231.htm

Fooook knows how much the motor weighs though.
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Old 07-09-2010, 10:54 PM   #56
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Now with more equal length stainless steel turbo ready header:

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Old 07-09-2010, 11:03 PM   #57
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That closeup just did it for me. I want!
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Old 07-10-2010, 04:20 AM   #58
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i take back what I said by that close up as well... maybe boost will make up for what I hated. However, those V8 hyabusas are awesome shitz as well. Expensive tho.
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Old 07-10-2010, 07:22 AM   #59
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Mmm sexy.
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Old 07-12-2010, 03:14 AM   #60
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Quote:
Originally Posted by JKav View Post


The engine/trans adapter came out sexay. That is a lot of machine time... there is talk of tooling up a cast version down the road.
That thing is like a work of art. I want to hang it on my wall.

--Korea
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