Millenia engine info

[mp3moose]

I am looking for the engine code on for a millenia S and what supercharger it used.

[BradC]

If I am not mistaken they were never blown.

I know they had an ad that said they had the power of a supercharged V-6, but that was due to the Miller Cycle engine being used as opposed to the Otto Cycle internal combustion engine...

[mp3moose]

I thought the S was. I'll go check.

[mp3moose]

Yeah the S definately was supered.

[pdhaudio83]

yes, it was supercharged.

[Captain KRM P5]

the 2.3 miller cycle relied on the supercharger to operate. basically, remove the SC and it no longer works.



The standard four-stroke engines described in How Car Engines Work (http://auto.howstuffworks.com/engine.htm) are called Otto-cycle engines. They are named after Nikolaus Otto, who invented this type of engine in 1867. In the same way, Diesel-cycle engines are named after inventor Rudolf Diesel.

Ralph Miller patented his Miller-cycle engine in the 1940s, and for the last several years Mazda has been using this type of engine in some of its cars.

A Miller-cycle engine is very similar to an Otto-cycle engine. The Miller-cycle uses pistons, valves, a spark plug, etc., just like an Otto-cycle engine does. There are two big differences:

A Miller-cycle engine depends on a supercharger.
A Miller-cycle engine leaves the intake valve open during part of the compression stroke, so that the engine is compressing against the pressure of the supercharger rather than the pressure of the cylinder walls. The effect is increased efficiency, at a level of about 15 percent.

[Captain KRM P5]

also : http://www.mazda.com.au/articleZone.asp?articleZoneID=92

[mp3moose]

Wow, interesting info about the miller cycle.

[jred321]

"The Autorotor is a belt driven supercharger operating on the twin-screw Lysholm principle. The Lysholm principle was conceived to give three primary advantages over all other style superchargers: volumetric efficiency, reduced drive power requirement, and lowered discharge temperatures. The continuous flow path of the air charge and the internal compression ratio are the concepts that permitted the goals to be met. The net achievement is the highest volumetric and thermal efficiency ever designed into a mechanically driven supercharger. Opcon Autorotor AB has done the job well, it is clearly the premier supercharger in the world today. This marvelous achievement was acknowledged by none other than Mazda themselves by their choice of this design for the Millenia sedan. The Lysholm/Autorotor as fit to the Millenia is manufactured under Swedish license by IHI Corp. of Japan specifically for the Millenia. "
screw type, ihi manufactured supercharger. some pictures of it

http://s91196822.onlinehome.us/supercharger/supercharger.JPG

http://s91196822.onlinehome.us/supercharger/supercharger1.JPG

http://s91196822.onlinehome.us/supercharger/supercharger2.JPG

http://s91196822.onlinehome.us/supercharger/supercharger3.JPG

i don't know what the engine code is but it's very similar to the kl-03 engine. i think it's still considered a k series, but the code itself i'm not sure
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[Natey]

Was the Miller cycle used in the Milennia S a Yamaha?

[mp3moose]

Wierd how the compression ratio is different because of the piston traveling upward with the intake valve still open. I wouldn't think that using the screw to push against would increase efficency.

[mp3moose]

And of course this motor is a direct drop in for all proteges.

[mikeyb]

Shouldn't this thread be in the All Mazda Forum?

[vodapas77]

I'm thinking it was the KL-ZE but I could be completely wrong on that.

[mp3moose]

Shouldn't this thread be in the All Mazda Forum?
probably

[mp3moose]

I'm thinking it was the KL-ZE but I could be completely wrong on that.
No, its not at KL.

[Captain KRM P5]

I'm thinking it was the KL-ZE but I could be completely wrong on that.
the KLZE was the JDM 2.5 like the ones that drop into Probes/626s/MX6s and maybe even....Proteges :)

[mp3moose]

What about a millenia swap to protege, anybody got sizes on this miller cycle?

[flat_black]

It's a 2.3 litre K series V6. KJ-ZEM. Very cool engine design, indeed. But good luck getting it to work with any ECU other than the factory one; The ECU was practically sentient, because it had to be; No intake valves means strange cam/timing adjustments.

[Necessity]

The miller cycle engine parts are VERY expensive to replace. The millenia boards over at mazdaworld.org are filled with info on them if you want to speak to some die hards.

[LinuxRacr]

Moved.

[Captain KRM P5]

What about a millenia swap to protege, anybody got sizes on this miller cycle?
i honestly am of the opinion that a JDM KL-ZE swap would be a far better idea and give you much more potential to work with.

[flat_black]

The KL-ZE is at least a conventional engine, so you have a good platform to strap an ECU to, at least. The Millenia S' engine would definitly be difficult to get working properly, even with the most advanced of engine managment options.

[mazdasly75]

Not to mention that the "S" comes only in ATX version.....ain't no fun to drive.

210hp...and it stops there. You can expect no gain from what ever stuffs you'll hook to it. All of the goodies would have to be customized.

[MACEY]

Would even a KL series be possible in a protege. You would have to use transmissions from the KL's and therefore I assume the axles etc as well. I mean if it would be possible for a price anywhere near a reliable complete turbo kit, then I for one would be interested. It sounds awful doubtful to me that it would fit though.

Marcus

[jred321]

people have swapped kl's into probes that had an fs motor. probably could be done with a protege too, not worth it imho

[mazdasly75]

people have swapped kl's into probes that had an fs motor. probably could be done with a protege too, not worth it imho

The "k" series fits perfectly into the protegé 90-94. It has the same engine bay as the mx3.

For this to be possible, you have to:

-gets engine mounts from any probe/mx6/mx3/626/millenia.
-mx3 or millenia exaust manifolds/mx3 downpipe
-curved style intake manifold from millenia/eunos 800 j-spec/mx3. The mx-6 j-spec wont fit.
-swap the brake booster from a mx3GS (V6)
-cross member from the mx3.
-and of course the ecu
-custom cat back exaust

Of course you would need a stiffer front suspension, since the engine is heavier than the little bp.

a lot of acceleration fun....

[jred321]

i assumed the person asking meant the car he drives, i.e. a p5, not a 1g.
even so, the kl motor isn't worth the swap in my opinion.

[MACEY]

[QUOTE=mazdasly75]The "k" series fits perfectly into the protegé 90-94. It has the same engine bay as the mx3.

For this to be possible, you have to:


-mx3 or millenia exaust manifolds/mx3 downpipe

This is a question about the down pipe. How is the down pipe different from the millenia and that found in the mx-6/pgt etc? I am curious due to the want of possibly adding hotshot/bosal headers and whether they would fit?

Marcus

[mazdasly75]

My Kl is now tuned to 265 of N/A bhp @ 8200rpm.....isn't worth the swap like you say, but i'm still having fun on the track.

[jred321]

umm, how? what do you have done to it? are you on pt?

[mazdasly75]

The dowpipe is different, cause the exaust manifold is different too. If you use an exaust manifold from mx3 with mx6 downpipe, the flanges would be offsets.

The lenght of both downpipe are quite different. The mx3 is shorter than mx6/626. You would have problem fitting cat over mx6's one.

There's difference between OBDII exaust manifold and OBDI. OBDII have pre-cat, so the manifold is a bit longer. In this case you need a 96/up downpipe application.

[mazdasly75]

My signature says....

Actually, no ones tuned correctly interprep's 9.4 cams, wich I did with the SDS unit.

[Miller Time]

Sounds like a terrific project, even if a royal pain in the ass.

Couple of questions:

How would you handle feeding the intercoolers? There's so little clearance between the top of the engine and hood on the Millenia that Mazda integrated some of the induction plumbing into the hood. Scoops behind the grille curve up and into the hood, then back down to the 'coolers -- one at the front of the engine -- one closer to the firewall. Rubber collars seal the system when the hood is shut.

Other question is the transmission. Only autos were offered on the S. Is there a direct fit with other Mazda 5 speeds? And if so -- how do you remap the engine management system to account for the loss of traction control? Is that even an issue?

[mazdasly75]

OK...we were talking about the millenia's 2.5L KL engine ;)

[flat_black]

It's a KJ engine, actually. =) KJ-ZEM.

[Miller Time]

OK...we were talking about the millenia's 2.5L KL engine ;)

Doh!

..........ahem.....never mind....nothing to see here....go back about your business....