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BMW 320 x 328 F30 N20 diferenças mecânicas...


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Posted

Bom... estava atrás de informações para ajudar um amigo que quer chipar a X1 dele... como ela usa motor N20, fomos atras do porque a 328 tem mais cavalaria com o mesmo motor... logicamente que sempre fica a duvida: muda só pressão? mudam peças internas? muda muito mais coisa? bom, a unica diferença entre os motores são: pistão ( e logicamente a taxa ) e ECU... e na 320 os pistões andam com 11:1 de taxa contra 10:1 da 328... de resto, até os radiadores são iguais... vamos as fotos... :smile:

http://www.bimmerboo...th-part-numbers

Shared N20 2.0 engine components between an F30 320i and F30 328i:

  • Cylinder head - PN 11127624778
  • Connecting rods - PN 11247624616
  • Crankshaft - PN 11212212762
  • Intake manifold - PN 11617588126
  • Air box - PN 13717597589
  • Air filter - PN 13718507320
  • Intercooler - PN 17517618809
  • Radiator - PN 17117600520
  • Throttle body - PN 13547588625
  • HPFP - PN 13517584461
  • MAF - PN 13627602038
  • MEVD 17.2.9 DME/ECU - PN 12148604210
  • Exhaust manifold/turbo - PN 11657642469

Does the pistons not being shared mean the 320i pistons are weaker? Who knows at this point. They have the exact same compression ratio but different part numbers. Interesting that BMW would go to the trouble of changing the pistons but nothing else. Does the N20 320i have a tuning disadvantage to the N20 328i? Not at this stage, check out these dynocharts.

Here is the 320i N20 stock, yes, weaker than the 328i as it should be as the 320i N20 is rated at 180 horsepower and 200 pound-feet of torque versus 240 horsepower and 255 pound-feet of torque for the 328i N20:

That is just about another 80 wheel horsepower with just some minor tuning. The F30 328i is not the best tuning value in the BMW lineup, the F30 320i is. Keep in mind pushing the N20 motor beyond Stage II is currently not recommended as there may be a head cracking issue past 331 pound-feet of torque.

This article was originally published in forum thread: BMW F30 320i N20 turbo 2.0 fstock and modified dyno results from BMS - Full breakdown of 320i and 328i N20 shared components with part numbers started by Sticky View original post

Agora vem a parte divertida, os pistões:

http://www.n54tech.com/forums/attachment.php?attachmentid=13725&stc=1&d=1372953510 http://www.n54tech.c...=1&d=1372953510

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Posted (edited)

Top

Edited by YURI

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Posted (edited)

Interessante.. Eles também reforçam que os freios e semi-eixos/homocinéticas são diferentes.

Edited by Chiari
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Posted (edited)

outra "diferença" interessante da 320 x 328 é que a 328 vem com o rádio/computador de bordo exatamente igual ao da 320 mas com recursos extras habilitados. Recursos que podem ser habilitados através encoding nas 320.

Edited by pixel.nine
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Posted

Jurava que tinha diferença no cabeçote e turbina....

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Posted

outra "diferença" interessante da 320 x 328 é que a 328 vem com o rádio/computador de bordo exatamente igual ao da 320 mas com recursos extras habilitados. Recursos que podem ser habilitados através encoding nas 320.

como se faz isso? :lol:

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Posted

 

 

como se faz isso? :lol:

via Codding 

Bom... estava atrás de informações para ajudar um amigo que quer chipar a X1 dele... como ela usa motor N20, fomos atras do porque a 328 tem mais cavalaria com o mesmo motor... logicamente que sempre fica a duvida: muda só pressão? mudam peças internas? muda muito mais coisa? bom, a unica diferença entre os motores são: pistão ( e logicamente a taxa ) e ECU... e na 320 os pistões andam com 11:1 de taxa contra 10:1 da 328... de resto, até os radiadores são iguais... vamos as fotos... :smile:

 

http://www.bimmerboo...th-part-numbers

 

 

 

Shared N20 2.0 engine components between an F30 320i and F30 328i:

 

Does the pistons not being shared mean the 320i pistons are weaker? Who knows at this point. They have the exact same compression ratio but different part numbers. Interesting that BMW would go to the trouble of changing the pistons but nothing else. Does the N20 320i have a tuning disadvantage to the N20 328i? Not at this stage, check out these dynocharts.

 

Here is the 320i N20 stock, yes, weaker than the 328i as it should be as the 320i N20 is rated at 180 horsepower and 200 pound-feet of torque versus 240 horsepower and 255 pound-feet of torque for the 328i N20:

 

 

That is just about another 80 wheel horsepower with just some minor tuning. The F30 328i is not the best tuning value in the BMW lineup, the F30 320i is. Keep in mind pushing the N20 motor beyond Stage II is currently not recommended as there may be a head cracking issue past 331 pound-feet of torque.

This article was originally published in forum thread: BMW F30 320i N20 turbo 2.0 fstock and modified dyno results from BMS - Full breakdown of 320i and 328i N20 shared components with part numbers started by Sticky View original post

 

 

Agora vem a parte divertida, os pistões:

 

http://www.n54tech.com/forums/attachment.php?attachmentid=13725&stc=1&d=1372953510 http://www.n54tech.c...=1&d=1372953510

Isso  até as 320/328 quando viraram flex, depois a taxa virou tudo igual 

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Posted

Ou seja, o resultado de uma 328 chipada vs uma 320 chipada deveria ser exatamente o mesmo

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Posted

Ou seja, o resultado de uma 328 chipada vs uma 320 chipada deveria ser exatamente o mesmo

sim, exatamente o mesmo motor inteiro, das flex.

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Posted

Todas flex agora com taxa 11:1

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Posted

algumas 328 remap não ficam tão boas quanto uma 320 remap... não sei pq exatamente, mas tem a ver com  a wastegate

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Posted

algumas 328 remap não ficam tão boas quanto uma 320 remap... não sei pq exatamente, mas tem a ver com  a wastegate

esses motores sairam com 2 tipos de wastegate, pneumatica e com mola 

mas tem os 2 modelos de wastegate em ambas, depende o ano.

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