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Old 05-07-2011, 05:19 AM   #1
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Boxster 3.2 differences

Any one know what was done by Porsch eto lift the power of teh S from 260/252 bhp to the later 280hp? anyone know.



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Old 05-07-2011, 11:51 AM   #2
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The case halves are the same, and I believe the heads are the same also, however the induction and exhaust systems (particularly the headers) got greatly improved. DME programming was certainly part of the equation too.
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Old 05-09-2011, 05:03 PM   #3
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there are no major engine changes from the 986 to the 987 ? it is only a 20 h.p. gain. that's why i'm holding out for an 07 with the 3.4
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Old 05-10-2011, 05:42 AM   #4
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Variocam Plus has something to do with it as well.

"Porsche's more recent VarioCam Plus combines variable valve timing with two-stage lift on the intake side. The two-stage valve-lift function is performed by electro-hydraulically operated switchable tappets. Each of these 12 tappets consists of concentric lifters which can be locked together by means of a pin. The inner lifter is actuated by a small cam lobe, while the outer ring element is moved by a pair of larger-profile lobes. The timing of each valve is seamlessly adjusted by means of an electro-hydraulically operated rotary vane adjuster at the head of each intake camshaft."

http://en.wikipedia.org/wiki/VarioCam
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Old 05-10-2011, 06:31 AM   #5
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2 downsides to the '07 3.4

are the lesser cylinder wall thickness and the type of IMS fitted which is far more expensive to maintain/replace/upgrade. The 3.2 is said to be the more robust engine.

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