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    went to a dyno day

    It was a pca dyno day. I expected to see a lot of those HP hungry tt guys. But just an eclectic mix of 914, 944's, a 1970 911,a 911 sc,a 993tt, a 993 cup car, and one 996 tt. Some made some very interesting sounds and it was fun seeing all 4 wheels on the 996tt spinning. The 993 cup car dynoed at 249 hp and the 996tt dynoed at 315 hp. A chipped 944 turbo produced 270 hp. Interesting day. A 997 from a dealer showed up, atlas grey. There was also a noble there, very interesting car. Sorry no digital camera, just film.

    Tom

    Re: went to a dyno day

    Quote:
    racerx said:
    ...... it was fun seeing all 4 wheels on the 996tt spinning. The 993 cup car dynoed at 249 hp and the 996tt dynoed at 315 hp.



    Not too surprised the 996TT only showed 315 hp if all 4 wheels were spinning on the rolling road!

    Re: went to a dyno day

    Quote:
    fritz said:
    Not too surprised the 996TT only showed 315 hp if all 4 wheels were spinning on the rolling road!





    A little note on 996 Turbo dyno testing:

    It is not possible to carry out an output power measurement on the two-wheel roller-type test stand with the 996 Turbo. If the vehicle is run on a two-wheeler roller dyno, sufficient inner-cooling cannot be ensured.
    As a result, boost air temperature reaches excessive values.
    This will lead to loos of engine power and damage to the engine due to overheating. The considerable amount of heat generated may also damage the transmission.
    The significant amount of slip at the wheels caused by the high power output may lead to incorrect output measurements and even damage the tires. The tire damage may not be immediately recognizable.


    I just hope the dyno wasn't a two-wheel roller dyno but...

    Re: went to a dyno day

    It was a new hi tech job with a center platform that could shrink and expand to match the wheel base and when the 996 tt was on both front and rear axles (4 wheels) were spinning in exact unison ( i snapped a photo at that moment) also the place had 2 huge fans, 1 in front and one behind with i think the engine cover up. I could notice no tire slippage on any test and i was 8 ft from the wheels behind a glass wall.
    A guy mentioned that the drag from the all wheel drive set-up would rob the hp. But if i remember correctly the torque was better at like 360 starting at a low 3000 rpm's.
    I could feel the cement floor vibrate under that load. I was expecting some of the engines to explode.

    Some guys i know had their cars run on the exact dyno as was today here are their numbers for comparison, this way even if this dyno may show conservative numbers all the cars are relative to one another;

    1999 550 370hp
    1999 diablo 360hp
    1985 TR euro 275hp
    2004 360 302hp
    1985 308(4v) 172hp

    Tom

     
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