Dyno | FerrariChat
Buy

Dyno

Discussion in '360/430' started by Andrie, Jul 6, 2016.

This site may earn a commission from merchant affiliate links, including eBay, Amazon, Skimlinks, and others.

  1. Andrie

    Andrie Formula Junior

    Mar 6, 2015
    726
    Bay Area, CA
    Full Name:
    Andrie Hartanto
    #1 Andrie, Jul 6, 2016
    Last edited by a moderator: Sep 7, 2017
    Got to dyno my car today. My car has IPE header and nothing else. We tried with the exhaust valve shut, and open. Also with the fan blowing on to the intake. We can't get the car to rev more than 8250 rpm. I'm sure there must be a dyno mode to allow it, I just don't know how. We dyno using CST OFF.

    Exhaust valve closed and fan on the front 371.3 HP
    Exhaust valve closed and fan on intake 373 HP
    Exhaust valve open and fan on the front 440 HP
    Exhaust valve open and fan on intake 452.8 HP
    Image Unavailable, Please Login
     
  2. RonnieRenaldi

    RonnieRenaldi F1 Rookie

    Aug 16, 2004
    2,686
    #2 RonnieRenaldi, Jul 7, 2016
    452 hp at the wheels? That's really great, ~530 hp at the crank.
     
  3. DK308

    DK308 F1 Rookie

    Aug 13, 2013
    2,738
    Europe, way north.
    Full Name:
    AB
    #3 DK308, Jul 7, 2016
    Mustang dyno? Any pre-install numbers to verify an actual increase of power?
     
  4. Andrie

    Andrie Formula Junior

    Mar 6, 2015
    726
    Bay Area, CA
    Full Name:
    Andrie Hartanto
    #4 Andrie, Jul 7, 2016
    Dynapack. The purpose of the dyno is to see if there is any difference between exhaust valve open and closed.

    That being said I'm taking the header off and putting stock one soon. It is too loud for my liking when the exhaust valve open. I will re-dyno then.
     
  5. redcaruser

    redcaruser Formula 3

    Apr 8, 2012
    2,426
    switzerland
    Full Name:
    daniel
    #5 redcaruser, Jul 7, 2016
    Are you sure Ronnie? I read the following: measured on the wheel 371.3 hp, gain factor (gearbox etc.) 81.4, SAE HP net 452.8. That would be not that much. Hope I'm wrong!

    And what is going on at 5000rpm's?? The torque collapse looks terrible!
     
  6. MaranelloDave

    MaranelloDave Formula 3

    Apr 27, 2010
    2,203
    LA
    Full Name:
    Dave
    #6 MaranelloDave, Jul 7, 2016
    The difference between open and closed valves is substantial. This would make a difference at the track if you ran valves closed. Is that why you did the dyno runs? Looking to comply with Laguna's sound restrictions?

    As for the rev limit, I read somewhere (here maybe) that these cars have issues on the dyno because the front wheels aren't turning.
     
  7. Andrie

    Andrie Formula Junior

    Mar 6, 2015
    726
    Bay Area, CA
    Full Name:
    Andrie Hartanto
    #7 Andrie, Jul 7, 2016
    You are reading it wrong. The 371.3 HP is dyno when exhaust valve closed and no fan on the intake.
     
  8. Andrie

    Andrie Formula Junior

    Mar 6, 2015
    726
    Bay Area, CA
    Full Name:
    Andrie Hartanto
    #8 Andrie, Jul 7, 2016
    I ran the car at Thunderhill with valve closed with a bunch of 991 GT3. I was slower in the straight line. Thunderhill has sound limit of 103 so I have to run it with exhaust valve closed. I'm can't fathom why the car is slower in the straight line than GT3, thus why I did the dyno and it confirmed it.
     
  9. MaranelloDave

    MaranelloDave Formula 3

    Apr 27, 2010
    2,203
    LA
    Full Name:
    Dave
    #9 MaranelloDave, Jul 7, 2016
    Any issues running on the track with the valves closed? Any codes thrown? I wonder if the increased back pressure has any effect other than just reducing power output.
     
  10. Turbotuner20v

    Turbotuner20v Formula Junior

    Mar 18, 2014
    362
    #10 Turbotuner20v, Jul 7, 2016
    Do you know why there was a dip in the torque at low/mid rpm?
     
  11. Andrie

    Andrie Formula Junior

    Mar 6, 2015
    726
    Bay Area, CA
    Full Name:
    Andrie Hartanto
    #11 Andrie, Jul 7, 2016
    No issue other than it felt slow. I'm going to make a GPS based controller that will open or close the valve on specific area of the track like the Porsche guys did.
     
  12. Andrie

    Andrie Formula Junior

    Mar 6, 2015
    726
    Bay Area, CA
    Full Name:
    Andrie Hartanto
    #12 Andrie, Jul 7, 2016
    I don't know. The car is completely stock other than header. It might be the header or it might be factory tune. I can't be sure. I'll report back once I re-install the stock header and dyno again.
     
  13. MaranelloDave

    MaranelloDave Formula 3

    Apr 27, 2010
    2,203
    LA
    Full Name:
    Dave
    #13 MaranelloDave, Jul 7, 2016
    Interesting. Or you could just trip it yourself. It'd be like activating/deactivating DRS. :)
     
  14. Andrie

    Andrie Formula Junior

    Mar 6, 2015
    726
    Bay Area, CA
    Full Name:
    Andrie Hartanto
    #14 Andrie, Jul 7, 2016
    Last edited by a moderator: Sep 7, 2017
    I do have manual switch for the exhaust. :D
    Image Unavailable, Please Login
     
  15. stevecomp

    stevecomp Formula Junior

    Mar 1, 2013
    743
    South Australia
    Full Name:
    Steve
    #15 stevecomp, Jul 7, 2016
    If you could do back 2 back pulls with the MAF sensor mesh in and then remove it, I'm interested to see the numbers with and without. Have an 02 sniffer in the headers if you can for real afr readings.
     
  16. Andrie

    Andrie Formula Junior

    Mar 6, 2015
    726
    Bay Area, CA
    Full Name:
    Andrie Hartanto
    #16 Andrie, Jul 7, 2016
    In my experience the mesh is important to get accurate reading for the sensor. I no longer own a dyno. Had to use a friend and I don't think I can take too long on their dyno.
     
  17. MRY

    MRY Formula Junior

    May 14, 2015
    384
    Monterey Peninsula
    #17 MRY, Aug 16, 2016


    Just curious about a couple things:

    Is it common for the torque output to fall that much between 4-6k on that type of dyno or on a 430?

    What was the ambient temp during the run?

    Did the dyno operator use a lambda meter with a lab grade professional sensor and get a lambda reading for the runs as well?

    Do you know how much the driveline losses are in an F430?

    What other items did you data log for the events/runs?





    Richard
    Sent from my iPhone using Tapatalk, please forgive typos
     
  18. rmarchjr

    rmarchjr Formula Junior

    May 21, 2012
    586
    North east, USA
    #18 rmarchjr, Aug 18, 2016
    never put my 430 on a dyno, but it feels like what is on that sheet

    the MAFs on the Scud have no mesh or screens, totally open
     
  19. stevecomp

    stevecomp Formula Junior

    Mar 1, 2013
    743
    South Australia
    Full Name:
    Steve
    #19 stevecomp, Aug 18, 2016
    Good to know my carbon airbox/MAF housing are open/no mesh and 5mm lager than OEM to match the 75mm throttle bodies.
     

Share This Page