foo
New member
http://forum.autohoje.com/showthread.php?t=63752&page=2
Por exemplo, para passarem de 185cv para 205cv o motor é todo novo e têm 3 anos de projecto. Não é ligar um computador e já está.
Essa do Mini, para ti, que pareces ser um apreciador da marca é gira.
http://www.caranddriver.com/reviews...08_mini_cooper_s_john_cooper_works_auto_shows
Do anterior Cooper S para o JCW, para ganhar 37cv levou uma cabeça de motor nova, um compressor novo e um sistema de escape novo. É coisa pouca?
http://jalopnik.com/360018/2008-john-cooper-works-mini-cooper-s-revealed
"The engines for the MINI John Cooper Works and the MINI John Cooper Works Clubman are made at the BMW Group engine plant Hams Hall (Great Britain) where the engine units for all MINI model variations are manufactured. In the case of the top-of-the-range engine, there are a number of special modifications to the production process to do justice to the increased output and the resulting higher temperatures in the combustion chamber, thereby guaranteeing maximum reliability of the drive system. The engines are fitted with reinforced and specifically ground pistons as well as a cylinder head with optimised rigidity and modified gasketing. The intake valves and valve seat rings are also made of especially resilient material, and as compared to the engine of the MINI Cooper S there is a slight reduction of the compression."
"
The power increase as compared to the engine of the MINI Cooper S is mainly achieved by means of optimised air intake and outlet due to an adapted turbocharger. The air filter, air mass sensor, exhaust system and catalytic converter have been modified so as to achieve a power-enhancing dethrottling on the induction and exhaust side. This is also reflected in an engine sound which is peculiar to this model. Due to the adaptation of the exhaust system,
a significant reduction of counterpressure is achieved. The through-flow capacity of the clean air duct to the turbocharger has also been increased. The design of the Twin Scroll turbocharger enables an especially spontaneous power build-up. In the exhaust manifold and the turbocharger, the channels of two cylinders are separated in each case. The supercharger blades are set in optimum motion even at low engine speeds. A turbine was developed in very high-quality material especially for the MINI John Cooper Works and the MINI John Cooper Works Clubman, and the maximum boost pressure was increased from 0.9 to 1.3 bar overpressure."
Coisa pouca então.
Posso-te dizer que dos 175 para 192, leva uma panela de escape nova, um filtro de ar e a repro. Segundo a maioria dos especialistas, todo o power vem da repro, o resto ajuda, mas está lá maioritáriamente para fazer numero.
Em relação ao JCW o caso já muda de figura, mas das peças que foram alteradas a grande maioria foi de maneira a garantir fiabilidade bullet-proof. Os cavalos estão lá há mesma sem essas alterações todas. Há cooper S 175cvs para com 200+ cvs que de modificações tem uma panela de escape, que pouco faz. A fiabilidade vai ser a mesma de um stock JCW? Provavelmente não, mas a repro não deixa de ser boa, e até agora não se adivinham problemas de maior.
http://www.mini2.com/forum/2nd-gen-...e-p-torque-stage-1-remap-review-cooper-s.html
Última edição: