Inception:


Question sir:

The final gear ratio of the car as originally designed was 3.367
Doing the swap means the final ratio will then be changed to 3.648
This means the new ratio to the old ratio is now 1.083:1.000

I understand the benefits of this : increased Torque and acceleration at low speed, but my top speed will definitely reduce @ all gears (and i care less about that)

My worry is if the output speed sensor will get better readings than before. With the gear presently on the car, the final drive ratio is 2.885, which when compared to the designed is about 0.857 :1.000. This i believe was causing the shift flares shifting from 2 to higher gears.How the TCU did not register a gear incorrect ratio is a mystery.

Do you think the proposed ratio highlighted will eliminate the shift flare?

Inception:
Na wa for Hyundai Kia sef...

After exhaustive investigations and research, i realized that even the transmission replaced is not compatible! The TCU was never at fault.

The Transmission installed was from a KIA optima 2012 US spec vehicle. All drive ratios, compared with the originally designed transmission is the same( gears 1 to 6) but the final drive ratio is different (2.885 for US spec{2.4 GDI engine with 200HP output} ) as against 3.367 for the 'General' spec{2.0 Theta II MPI engine with 162 Hp output}). The general spec is the Nigerian export which Kia motors Nigeria sells.

The implication to this is that the output vehicle speed sensor(VSS) takes readings from the gear teeth from the final drive. Now this already gives a ratio of 2.885/3.367= 0.856 which causes a transmission flare particularly for gear shift 2-3 and 4-5 (as these identified shifts involves the release of brakes first, then the engagement of clutches) .

Now to my gurus: i am in a dilemma. i have a 2013 Hyundai Santa-Fe gear which i dismantled and removed some elements (clutch disks) for future use in case of clutch pack failure( long story for another day) . upon checking i realized that the final drive of this is 3.648 { 2.4 GDI 2WD}. i have confirmed that it will work if i swap the differentials, the final gear and the output speed sensor into the current gear( i don open that one too but no pics you hear ) This will give me a ratio of 1.083.
What do you think?

N.B. This is purely from an engineering stand point and yeah yeah i know i will need to buy another gear but i want to be like kashif first and use my leave to have some fun

Kashif:


In trying to solve this (yourself), you may have complicated matters.

You have gone changing internal parts, which is sending you chasing your tail on this. It is hard to follow what you have done, which to me, is now looking like a moving target.

You have a Nigeria spec car, and you are throwing US spec parts at it. You may have two options now - 1. Get a US computer and mate with your current transmission. 2. Go to Kia Dealership and let them sell you a Nigeria spec transmission.

Just calm down. Remember what you saw with the U150?

Precious231:

i bought liberty jeep after 2 months engine blown off, after replacement of engine no mechanic up till now can start the car. its over 1 month with over 5 mechanic non is successful. if there is anybody that can start the car I will appreciate it, nairalanders please help locate the right person thanks.

Precious231:

i bought liberty jeep after 2 months engine blown off, after replacement of engine no mechanic up till now can start the car. its over 1 month with over 5 mechanic non is successful. if there is anybody that can start the car I will appreciate it, nairalanders please help locate the right person thanks.

Precious231:

i bought liberty jeep after 2 months engine blown off, after replacement of engine no mechanic up till now can start the car. its over 1 month with over 5 mechanic non is successful. if there is anybody that can start the car I will appreciate it, nairalanders please help locate the right person thanks.

Inception:
Been in hiatus as per the 'project'....

So, i tore open the transmission after getting it dropped to inspect the internal parts. The insides was quite clean i must say...

i compared the final drive of mine to that of the transmission of the Hyundai, obvouls there was a difference in the teeth/gearing.

But then i checked the intermediate gear where the output speed sensor took its reading...Non. matching

Did a further check online and then i realised that the transmission originally installed on the vehicle was specific for non-GDI engines( Theta II 2.0/2.4, Nu 2.0 CVVT) with the code name A6MF1( narrow band). The one in the car was A6MF2 (Narrow band) installed on the Theta II 2.4 GDI engines, while the one i removed was A6MF2(wide band) installed in the Hyundai santafe 2wd.


Now i know why people hate the Hyundai /KIA brand when it comes to parts! two gearboxes looking exactly similar , yet they are different internally!

So i just jejely packaged the gear back and installed in the vehicle and decided to source for the exact replacement (still suffering from 2-3 flares) ...

Advise for peeps on this forum... If you are to buy any vehicle(used or Toks) PLEASE avoid the ones bought brand new in Nigeria. In the event a major component like transmission is to be replaced , you may run into extreme difficulty locating an exact replacement and even if you do, the price will be astronomical. Go for the American spec.

Inception:
Been in hiatus as per the 'project'....

So, i tore open the transmission after getting it dropped to inspect the internal parts. The insides was quite clean i must say...

i compared the final drive of mine to that of the transmission of the Hyundai, obvouls there was a difference in the teeth/gearing.

But then i checked the intermediate gear where the output speed sensor took its reading...Non. matching

Did a further check online and then i realised that the transmission originally installed on the vehicle was specific for non-GDI engines( Theta II 2.0/2.4, Nu 2.0 CVVT) with the code name A6MF1( narrow band). The one in the car was A6MF2 (Narrow band) installed on the Theta II 2.4 GDI engines, while the one i removed was A6MF2(wide band) installed in the Hyundai santafe 2wd.


Now i know why people hate the Hyundai /KIA brand when it comes to parts! two gearboxes looking exactly similar , yet they are different internally!

So i just jejely packaged the gear back and installed in the vehicle and decided to source for the exact replacement (still suffering from 2-3 flares) ...

Advise for peeps on this forum... If you are to buy any vehicle(used or Toks) PLEASE avoid the ones bought brand new in Nigeria. In the event a major component like transmission is to be replaced , you may run into extreme difficulty locating an exact replacement and even if you do, the price will be astronomical. Go for the American spec.

thebigkendo:


I will take a bought brand new Honda or Toyota anyday, anytime over bought salvaged toks naija used..

As for kia/Hyundai my hand no dey their oh.. If I no be brand new then toks Naim sure pass

AutoElectNG:


The law of demand and supply at work!

Thanks for updating the thread!!

Inception:

My chairman!

Something must kill a man


Valar Morghulis

Inception:


Advise for peeps on this forum... If you are to buy any vehicle(used or Toks) PLEASE avoid the ones bought brand new in Nigeria. In the event a major component like transmission is to be replaced , you may run into extreme difficulty locating an exact replacement and even if you do, the price will be astronomical. Go for the American spec.

Inception:


My brother,

The vehicles sold as brand new for the Nigerian market are :

1. Basically watered down variants of the American counterparts ( imagine a 2012 KIA optima with only driver and passenger airbag, Manual seats, OBD 1 capability , and a mere ABS system only?!, where the american spec comes with a more powerful engine (GDI), driver, passenger, curtain airbag as standard, Bluetooth capability as standard...

2. Most car parts( Engine, Transmission) you get today are sourced from the US/canada, compared with fewer ones sourced fom Japan/ Korea.

This implies the ones coming from the Asian countries to be more Expensive( although they are usually with much lower mileages and in some cases better quality )
3. More as i remember...

Kashif:


Funke!

Inception:


My brother,

The vehicles sold as brand new for the Nigerian market are :

1. Basically watered down variants of the American counterparts ( imagine a 2012 KIA optima with only driver and passenger airbag, Manual seats, OBD 1 capability , and a mere ABS system only?!, where the american spec comes with a more powerful engine (GDI), driver, passenger, curtain airbag as standard, Bluetooth capability as standard...

2. Most car parts( Engine, Transmission) you get today are sourced from the US/canada, compared with fewer ones sourced fom Japan/ Korea.

This implies the ones coming from the Asian countries to be more Expensive( although they are usually with much lower mileages and in some cases better quality )
3. More as i remember...

timifakay:


Pictures or adonbelievit.

I've worked on 2006 Sonata and Elantra bought brand new in Nigeria, so I find the 2012 optima story hard to believe.

timifakay:


Pictures or adonbelievit.

I've worked on 2006 Sonata and Elantra bought brand new in Nigeria, so I find the 2012 optima story hard to believe.

timifakay:


Pictures or adonbelievit.

I've worked on 2006 Sonata and Elantra bought brand new in Nigeria, so I find the 2012 optima story hard to believe.

GAZZUZZ:


OBD1 is a trademark on most kia/hyundai sold in Nigerian market. i will take a few pics when they come in...

timifakay:


That's crazy mehn. I'll be on the look out too.

AutoElectNG:


I can help you start it...let's talk...see my number above

airfresher:
Sir pls can you help me with your number 08033818063