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    Porsche Factory Engine Testing Questions

    Tonight's NatGeo 'Ultimate Factories' building the 911, shows truly a modern car assembly facility of an iconic advanced sports car. Lots of innovative assembly methods and technologies. 

    The boxer engine is assembled with a rational mix of manual and automated assembly. The engine is 'cold tested' sans fluids, where I presume they rotate the crankshaft and measure pressures and friction. It appears though that the flat6 is not 'hot tested' as it is only fired for the first time as the car is driven out of the line for some basic and brief roller/dyno testing (limited to 75MPH). If this is indeed the case, break-in of these engines must be looked into with a new perspective. Are piston rings settled as the car leaves the factory?

    I look forward to comments.  

     

     


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    _________________________________________________________ 

    A. Dias --- 997.2S (ordered). Previous cars: Corvette C6,  996 C4.


    Re: Porsche Factory Engine Testing Questions

    It's possible that this show may have missed the engine hot-test station, which PCNA refers to in their Factory Virtual Tour.

     


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    _________________________________________________________ 

    A. Dias --- 997.2S (ordered). Previous cars: Corvette C6,  996 C4.


    Re: Porsche Factory Engine Testing Questions

    When I went on the factory tour in Zuffenhausen on 10 November 2006, I visited the engine assembly area. There was also a hot-test room where we were told every single engine (not just a random sample) was hot-tested. If the power output was more than or less than 4% of the advertised amount, the engine would be worked on again and, if need be, stripped down and re-built until it yielded power within the acceptable range.

    So, AFAIK, the description of the process in National Geographic would appear to be incomplete and possibly misleading.


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    Rennteam Moderator - 997.1 Carrera S Coupe GT Silver/Cocoa, -20mm/LSD, PSE, SportDesign rims, Zuffenhausen collection


    Re: Porsche Factory Engine Testing Questions

    Sometimes the shows cannot be trusted completely. I remember the Ferrari show where they showcase the 599, they were showing the bodies of 360 being painted.


    Re: Porsche Factory Engine Testing Questions

    I haven't seen the show yet but did come across this sample.

    channel.nationalgeographic.com/series/ultimate-factories/4545/Overview#tab-Videos/07404_00


    Re: Porsche Factory Engine Testing Questions

    Some say only the GT1 engines are hot tested. I would expect that all engines are hot tested right after assembly and before being installed in the cars.

    I also think that the video failed to show a water leak testa as well as a rattle test. Maybe RC can chime in about these steps and the engine testing.

     


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    _________________________________________________________ 

    A. Dias --- 997.2S (ordered). Previous cars: Corvette C6,  996 C4.


     
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