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<blockquote data-quote="supergripen" data-source="post: 291608" data-attributes="member: 1254"><p>while i do agree the Valvetronic system will pose a tuning problem,i do still think the N52's mag-alloy construction is also a major hindrance in FI'ing the engine.true,the magnesium block has an aluminium sleeve lining cast into its internals,but the fact of the matter is,magnesium still makes up a major portion of the equation.magnesium,as we know,while having a better density/weight ratio over steel and aluminium,is not as good at handling heat and pressure.mind,these are major components that are increased when u FI a car.</p><p></p><p>also,notice that in BMW's twin turbo applications(cue the N54B30),they have reverted back to using an aluminium block with steel internal linings.also note that the twin blowers used in the N54 only pumps out 0.4bars,but yet BMW has deemed it necessary to make another engine solely for the biturbo albeit one that is closely based on the trusty M54.call me silly,but i won't FI an N52,and as it so happens,BMW doesn't too.</p><p></p><p>i'd love to know what AJ@ESS thinks about all this.</p><p></p><p>these are just my opinions la..so don't take it too seriously.we are all here to learn..</p><p></p><p>cheers.</p></blockquote><p></p>
[QUOTE="supergripen, post: 291608, member: 1254"] while i do agree the Valvetronic system will pose a tuning problem,i do still think the N52's mag-alloy construction is also a major hindrance in FI'ing the engine.true,the magnesium block has an aluminium sleeve lining cast into its internals,but the fact of the matter is,magnesium still makes up a major portion of the equation.magnesium,as we know,while having a better density/weight ratio over steel and aluminium,is not as good at handling heat and pressure.mind,these are major components that are increased when u FI a car. also,notice that in BMW's twin turbo applications(cue the N54B30),they have reverted back to using an aluminium block with steel internal linings.also note that the twin blowers used in the N54 only pumps out 0.4bars,but yet BMW has deemed it necessary to make another engine solely for the biturbo albeit one that is closely based on the trusty M54.call me silly,but i won't FI an N52,and as it so happens,BMW doesn't too. i'd love to know what AJ@ESS thinks about all this. these are just my opinions la..so don't take it too seriously.we are all here to learn.. cheers. [/QUOTE]
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