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Old 11-19-2012, 02:51 PM   #1 (permalink)
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transmission swap?

can anybody give me advise on this?
This is my question at bottom in bold???

[I]I just inherited a 2006 Sportage EX V6 FWD from my daughter. It is in GREAT condition and I plan on driving it for awhile.
I just put 273,000 on a 2002 Infiniti Q45 Sport.
I am interested in getting better mileage.
I am on ecomodder.com and increased the mpg on the Q45 from 22mpg on the road to 30mpg.
The Q45 had a 2.76 rear ratio and that helped w/ the 5 speed auto w/ od.

Does anyone know if Kia made a 5 speed automatic transmission that would bolt into the 2.7V6?
I realize that a standard would be optimal, but I want to keep the automatic. (For simplicity)



11-14-2012, 07:27 AM #2 (permalink)
tysinbad
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Drives: 06 Sportage/08 Sorento
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The transmission used in the kia is an F4A42-2 and it only came in 4 forward gears and one reverse. It was not changed until the new sportage was released. With this change came a new transmission.

The F4A42-2 is used in a number of kia and hyundai vehicles, all 4 speed. Interestingly though, the final drive ratio from the optima (3.770) is less than the Kia (4.042 for FWD and 4.407 for 4WD). In my father-in-law's Optima, he sits on 2000rpm at 100kmh whereas I sit on 2500rpm at 100 kph (4WD for me).

You could swap these transmissions and thus have lower engine rpm for a higher speed, but I am not sure how the transmission control module will like it being a different final drive ratio

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Old 11-19-2012, 09:38 PM   #2 (permalink)
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don't know about your question but it looks like they're using a mitsubishi transmission.

might try one of their forums

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