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Discussion Starter · #1 ·
millenias come wit either our 2.5 or a 2.3L miller cycle, wich is basically supercharged,210hp engine. anyone ever done or thought of a transplant? you should be able to get a 2.3 from a local junkyard. is it compatible? can you raise boost on a miller cycle like a sprchgr for more hp? how much you guys think? should be a direct fit, seeing as the base millenia is our 2.5. lemme know. thanks
--Nick
--BLUMX6
 

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The engine will bolt in, but be prepared for some work. First you will need to replace the ECU, add some more wiring to the engine harness and re-route some more of it. But the real downside to it is if you thought the KL-03 engine has a lack of support in the aftermarket and the parts are expensive, wait until you see the non-existent support for the Miller-cycle engine and the price of replacement pieces for it. Also the injectors in the 2.3 are the same as used int eh 2.5 but at a higher duty cycle, so as you start going for more power the injectors become maxed out pretty quickly. It would be a lot easier to get the J-spec KL-ZE 2.5 engine which has 200 hp stock. It hooks up to the existing wiring and ECU and will take the same bolt-ons as the KL-03. Good question though, shows you are doing your research.:)
 

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Further to Greg's post:

- the Miller motor is tall. Very tall. AFAIK, it's not even close to fitting under the hood of an MX6 (or PGT). Not unless some of the induction piping is rerouted and moved off the top of the engine.

- the supercharger driver for the Lysholm blower on the Miller is intricately threaded around the front motor mount. I'm not certain the motor mount in the MX6/PGT will fit it. You may need to do some cutting and welding (etc) to get that mount right.

- did you know that, in the Millenia S anyway, that Miller motor has a tach that redlines at 6000, not the 7000 of the KL03? (At least that's what I recall from looking at the interior of one - <*drool*> - some time back. Not really an installation gate, but a point to consider nonetheless.

- the Miller was, AFAIK, never offered with a standard trans. As such, even with the proper PCM adapted, it'll probably run a little oddly near idle with some other possible driveability issues (if the PCM expects that it's connected to an ATX...)

Finally,

- while the KLZE will plug into the KL03 PCM, the VRIS points and timing map for the KL03 are not ideal for the KLZE. The ZE PCM has significantly higher VRIS RPM points and more timing advance in its spark map (see my PCME page for a graphical representation & comparison of the KL03 and KLZE spark maps).if you go the route of a KLZE, consider getting the PCM re-programmed to get the most out of the motor.
 

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Discussion Starter · #4 ·
screw it! aint worth it. KL-ZE prevails. i just figured it would be unique and easier to find. maybe even cheaper. by the way, someone said a KL-ZE was only 1400? WHERE? corksport wants over $2k.
 

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Japan Direct
Rising Sun Motors
and a bunch of others

Due a web search for used japanese engines and that should get you a good list. Just make sure to either inspect them yourself or if it's far away have someone in the MX-6.com or Probetalk have a look at it for you to make sure it's in good condition.
 
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