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Discussion Starter #1
hi all ,
i got my 147 2003 1.6 L recently which equipped with Full remsa exhaust with changing the header and of course removed the catalyzer
i put also K&N air filter
but when i asked my mechanic that i need more acceleration and top speed (my top speed now stopped at 200KMH no more ) he advised me with to replace my current gear box with 1.8 gearbox or 2.0 L
so i asked you about this matter and if there any different between 1.6 , 1.8 and 2.0 L gearboxes and is it will be useful for me to change it
and also is there a different between flywheels for the three types
need your advises please coz i'm going to change it after 2 days only
thanks in advance
 

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if it's in wrong place plz supervisor move it or tell me to make another post in its speceific

On the 4 cylinders all gearboxes are the same except for the final drives. Stay with original set up & fit the Alfa Q2 diff, available from Alfa as well as many Alfa parts specialists. Parts & labor to fit is around e650.00.
THen your transmission will cope with the mods you have in mind although I have not heard of the 4 cylinder FWD transmissions giving problems except for the Selespeed units.
The GTA147 breaks diffs etc but can be cured by the Q2, it's the torque that causes the failure not HP.
Hope this helps?
Ciao,
John
 

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Discussion Starter #6
dear john , 1st thanks for ur help
really i don't know what's Q2 but i'm talking about little improve in acceleration and top speed with the same fuel consumption so i suggest and asked about 1.8 gearbox
anyway i don't have any issues with motor or gearbox yet
but then i guess i'll replace the motor to 1.8 with its gearbox as i heard that 1.8 is more sporty motor than 1.6 or 2.0 and nearly with the same fuel consumption
i wish i'm right
thanks for ur reply
 
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