So what you need is a complete 4g64 from 02 and later eclipse? From intake mani to exhaust mani?
Wouldn't you also need the ECU? or will the stock ECU be able to compensate for the increased displacement and timing\cam? If you change the ECU then u need the MAF too? Fuel pump necessary? prolly not considering the modest to low gain of engine swap, right?
If everything is as similar as you guys say it is then this sounds like more of a weekend project compared to a month long trial and error session.

 

^^^Pretty much. Might need to run the ECu, but research is saying the cars run the same wiring harness so that is pretty much plug and play. We can use the Lancer MAS. Stock fuel will be fine. The big thing to learn now is whether the Lancer tranny will bolt up to Eclipse engine. Thats about it.

 

you will definatly need an ecu...there is no way the stock lancer ecu can compensate for an extra cam. since you need an ecu you'll need a wiring harness...they are not exactly the same. the 4g93 and 4g94's are the same. but the 4g63/64 and 4g94 arn't

 

you may not need a new MAS but i am absolutely positive they are different. i'm running the 4G64 MAS on my lancer. running the lancer MAS on the 4G64 would be a bad bottleneck.

the evo 8 does have the exact same ECU harness and pinout as the 5spd lancer(not auto) but the 4G64 seems to have the same harness but different pinout. not too sure of the shape. if it's the same shape, you could probably just pull the wires out and re-pin the harness. ecu's/harnesses of similar model years are usually similar. maybe only 3 or 4 different kinds per model year to span the whole mitsu line of cars. this might just mean save your harness but get a new ecu.

 

What extra cam are you talking about?? the 4G64 is a single cam just as the Lancer is.

 

Please elaborate. Why are you running the 4G64 MAS on your Lancer?? What did you have to do to re-pin your MAS to your Lancer? (wouldnt that be exactly what we would have to do?)

 

ugh yeh my bad....i'm thinking of what i have to do for my swap

 

this generation of mitsus seem to be using the same MAS housing, meaning that they are all the same shape and use the same harness to connect. the 3 different models for this gen are the 605(lancer), 501(3G eclipse), and 399(evo). their housings are the same and use the same wiring harness. these 3 models are swappable with each other. the difference is the restrictor plate used on each MAS. having a different restrictor causes different compensation for each application so to use a MAS that has a larger restrictor plate requires a piggyback of some sort. since this thread is about an engine swap, i don't see any concern for a piggyback since the MAS and engine will be matched. i don't see any problem using the smaller 605 on the 4G64 either but don't know for sure.

when making a custom intake for the swap, you have to remember that where the MAS is placed in the piping COUNTS. MAS placement screws with the AF ratio so keep that in mind. check the link in my sig about the SAFC. find some pics of eclipse engine bays for ideas for the proportions used on making a CAI if you plan to do so in the future. SRI should work regardless since it deals with such a small length of pipe.

 

getting a new MAS isn't so bad. i got mine for $40 shipped at www.car-part.com.

 

Thanks for the insight. I will keep all this in mind when it comes time for swap...if Rigo get the $$$ together

 

ONLY TIME WILL TELL...

 

Nick in South Florida is actually running the ECU from his 1.5 Mirage (4G15) with the 4G64 swap, for you naysayers on teh ECU. Do not ask me if this can be done with the Lancer's ECU because I dont know. He said he "thought" it would work with teh Mirage 1.8 ECU but that was never tried so I am nto speaking from experience.

As for the MAS, lik rhyzin said, just get the MAS for that car, the 4G64 / 6G72 MAS. Lancer MASes are horribly small as compared to even my stock 97 Mirage MAS.

According to Nick, he was giving me instructions and yes it is a weekend project if you have the correct parts and know what you are doing. He was the trial and error guy so it took him a while be he reassured me it would be a weekend project.

LOL and some of us Mirage guys DO know what we are tlaking about. Well at least sometimes.

 

So the ECU is still in question as is the tranny.

As for the extra cam this is what I meant: will the stock ECU be abel to compensate for extra lift and duration, or is this even a relevant ?? Does the 4G64 in question have a stock cam with similar #s to ours (Lancers) and will the ECU be able to figure out the differences? Was not asking about an extra cam as in DOHC. Also about the ECU, can it compensate for the extra air readings provided be the new MAS? I got the RRM piggyback so I can push some extra fuel into the system but would that be enough to compensate the readings of the MAS from the 4g64.
edit:I feel like an idoit for writing that last sentence.
If someone can give me a definate on the tranny.....
I got money, I got a garage, I got weekends, I can turn a wrench, I can repin plugs, I can even solder( though maybe not spell it) ..........I ain't got time to have the car sit for a month or so, and I ain't got a wife who understands.
Does anybody know the code # for the tranny's in the eclipse and lancer? Could somebody find out?

 

lancer tranny is F5M42. eclipse F4A42.

now that i think about it, the 4G94 MAS might not work. i run at least +32% correction with my safc at cruise with the 4G64 MAS. wouldn't using a 4G64 with a 4G94 MAS be the inverse?

the RRM piggyback is definately not enough to compensate. besides, the added fuel from the piggyback also comes with additional timing advance for higher octane.

if LB is running the 4G64 with a 4G15 ecu, then who knows how well it'll run with a 4G94 ecu.

if you need specs on anything(valve timing, etc.) on the lancer, i could probably get it.

 

see i knew if i brought this up other people would be interested....but my finances are holding me back for right now...jozilla...the things your not sure about are things that were not sure about...like you said..i can prolly loose my car for a weekend but not a month....someone get rob in here and tell him to give us his .02