Standard motor on a Rolling Road test!

Notices
 

Thread: Standard motor on a Rolling Road test!

Reply to Thread
Page 1 of 2 12 LastLast
Results 1 to 10 of 16
  1. Standard motor on a Rolling Road test! 
    #1
    Bimmer Fan
    Car Details
    frankyknuckles1's Car Details
    Model of Car:
    325ci sport
    Year of Manufacture:
    2002
    Transmission Type:
    Automatic
    Car Body Type:
    Coupe
    frankyknuckles1's Avatar
    Join Date
    Oct 2009
    Location
    Aberdeen
    Posts
    11
    Thanks
    12
    Thanked 7 Times in 4 Posts
    Just out of curiousity has any one put a standard BMW, of say 50k miles or so, on a Dyno and seen BHP figues exceed the "Factory" stated output?
    I have heard of it before on some motors but was wondering if anyone on here has come across it on there's!
     
     

  2. The Following User Says Thank You to frankyknuckles1 For This Useful Post:

    Hassan (05-11-2009)

  3. Remove Advertisements
    BimmerForums.co.uk
    Advertisements
     

  4.  
    #2
    RYM
    RYM is offline
    Legendary BFuk Member
    Car Details
    RYM's Car Details
    Model of Car:
    325tds
    Year of Manufacture:
    1996
    Transmission Type:
    Manual
    Car Body Type:
    Touring
    RYM's Avatar
    Join Date
    Apr 2008
    Location
    Bristol
    Posts
    12,959
    Thanks
    5,540
    Thanked 4,935 Times in 3,119 Posts
    Quote Originally Posted by frankyknuckles1 View Post
    Just out of curiousity has any one put a standard BMW, of say 50k miles or so, on a Dyno and seen BHP figues exceed the "Factory" stated output?
    I have heard of it before on some motors but was wondering if anyone on here has come across it on there's!
    I've heard stories of no two Dyno stations producing the same results and that to gain 100% reliable results is very difficult as some settings are often missed out by the technician

    It would be interesting to hear true opinions on tis, good post
     
     

  5. The Following User Says Thank You to RYM For This Useful Post:

    frankyknuckles1 (09-11-2009)

  6.  
    #3
    BMW Maestro
    Car Details
    Hassan's Car Details
    Model of Car:
    350z GT / Cooper
    Year of Manufacture:
    Dec 2004 / 2001
    Transmission Type:
    Manual / Manual
    Car Body Type:
    Coupe / Hatchback
    Hassan's Avatar
    Join Date
    Apr 2009
    Location
    England, East Midlands
    Posts
    947
    Thanks
    1,181
    Thanked 132 Times in 117 Posts
    Yeah I've always wondered this too!! Well done for bringing it up

    Well...I would be even more interested to see a standard automatic 330ci go on the rolling road for obvious reasons lol!!

    Get rich or die tryin'...
    BFUK Nightshift Crew member
     
     

  7. Remove Advertisements
    BimmerForums.co.uk
    Advertisements
     

  8.  
    #4
    BMW Fanatic
    Car Details
    mooser's Car Details
    Model of Car:
    325 tds
    Year of Manufacture:
    1994
    Transmission Type:
    manual
    Car Body Type:
    saloon
    mooser's Avatar
    Join Date
    Jul 2009
    Location
    cornwall
    Posts
    61
    Thanks
    4
    Thanked 10 Times in 9 Posts
    its impossible to say unless the manufacturer states a power figure taken at the wheels. this is the reading that the dyno takes and it calculates losses through the drivetrain on rundown but isnt renowned for being accurate. the only way to compare a stock engine to the factory claims is to take it out and put it on a bench dyno to measure the power at the flywheel as the manufacturer does.

    there are too many variables involved to claim more than standard power figure measured at the wheels and calculated to the fly figure from what i understand.

    its hilarious how some people calculate dyno losses as a percentage and claim 30% etc. ive seen ads from very very trusted and respected jap import companies claiming 30% run down losses on skylines that put down 500bhp at the wheels, claiming 650bhp at the fly which is rubbish.

    but conversely, every engine is different and i wouldnt be surprised if sometimes a stock engine exceeded the stock power figure by a nominal amount, as some may be under stock power as well.

    325tds until i finish the skyline...........but i do quite like the tds!!!
     
     

  9. The Following User Says Thank You to mooser For This Useful Post:

    frankyknuckles1 (08-11-2009)

  10.  
    #5
    BMW Master
    Car Details
    E46 PIERRE's Car Details
    Model of Car:
    E46 318I SE
    Year of Manufacture:
    1999
    Transmission Type:
    MANUAL
    Car Body Type:
    SALOON

    Join Date
    Jun 2008
    Location
    kent
    Posts
    498
    Thanks
    90
    Thanked 122 Times in 106 Posts
    Ive always been under the impression that as a Engine ages.A few Horses escape!! lol
     
     

  11.  
    #6
    BMW Guru
    Car Details
    Deano16v's Car Details
    Model of Car:
    745i
    Year of Manufacture:
    2003
    Transmission Type:
    Auto
    Car Body Type:
    Saloon

    Join Date
    Sep 2008
    Location
    Kent
    Posts
    3,632
    Thanks
    652
    Thanked 1,154 Times in 1,001 Posts
    Ive heard of a lot of BMW's not making their power outputs, mainly M motors though ( M3 Evos not making 321 and M5 E39's not making 400)
     
     

  12.  
    #7
    Dr of BMW
    Car Details
    pangster's Car Details
    Model of Car:
    F20 M135i LCI
    Year of Manufacture:
    2016
    Transmission Type:
    Auto
    Car Body Type:
    Hatchback
    pangster's Avatar
    Join Date
    Jun 2008
    Location
    Edinburgh
    Posts
    1,346
    Thanks
    1,911
    Thanked 1,227 Times in 885 Posts
    Quote Originally Posted by E46 PIERRE View Post
    Ive always been under the impression that as a Engine ages.A few Horses escape!! lol
    as a rule of thumb that's generally correct.. I think the OP was referring to the fact that german engines in particular are generally built to very high tolerances and as the miles clock up on them then the engines are generally freed up and are said to perform better (to an extent)..

    * 2016 BMW M135i LCI (F20): current
    * 2016 Mercedes Benz GLA 200d AMG Line (X156): current
     
     

  13.  
    #8
    BMW Crazed
    Car Details
    jamiewright1990's Car Details
    Model of Car:
    316i
    Year of Manufacture:
    1995
    Transmission Type:
    manual
    Car Body Type:
    saloon

    Join Date
    Jun 2009
    Location
    kirkby
    Posts
    242
    Thanks
    69
    Thanked 100 Times in 95 Posts
    Quote Originally Posted by pangster View Post
    as a rule of thumb that's generally correct.. I think the OP was referring to the fact that german engines in particular are generally built to very high tolerances and as the miles clock up on them then the engines are generally freed up and are said to perform better (to an extent)..
    so what your saying is my 316 could smash a brand new m3? im going to race somebdy for the documents
     
     

  14.  
    #9
    BMW Guru
    Car Details
    328mark's Car Details
    Model of Car:
    E46 328i se
    Year of Manufacture:
    1998
    Transmission Type:
    manual
    Car Body Type:
    saloon
    328mark's Avatar
    Join Date
    Aug 2008
    Location
    corringham essex
    Posts
    5,471
    Thanks
    815
    Thanked 2,426 Times in 1,920 Posts
    good luck with that...race him for pinks

    i've heard a similar story about engines freeing up with a few miles under the wheels
    it was certainly true with the vr6 engine in vw corrado's...one tuner had the highest std output from a 2.9 with 150k on the mileometer
    what i've felt,what i've known
    never shined through in what i've shown.

    -------------------------------------------
    PLEASE READ THE POSTING RULES & HOW TO CORRECT THREAD TITLES & THE SELLING RULES
     
     

  15. The Following 2 Users Say Thank You to 328mark For This Useful Post:

    bigedd9990 (08-11-2009),pangster (09-11-2009)

  16.  
    #10
    Bimmer Fan
    Car Details
    frankyknuckles1's Car Details
    Model of Car:
    325ci sport
    Year of Manufacture:
    2002
    Transmission Type:
    Automatic
    Car Body Type:
    Coupe
    frankyknuckles1's Avatar
    Join Date
    Oct 2009
    Location
    Aberdeen
    Posts
    11
    Thanks
    12
    Thanked 7 Times in 4 Posts
    Thanks for the replies to the thread people! thought about putting mine on a rolling road as there is a tuning shop around the corner! just for a bit of fun really!
    As Mooser and A20 RYM stated, acurracy would be a big stumbling point in truly knowing if your motor produced more BHP, but it would still be nice to give it a try and hear the growl of my motor as it redlines inside the shop!!!
     
     

Page 1 of 2 12 LastLast
Tags for this Thread

View Tag Cloud

Posting Permissions
  • You may post new threads
  • You may post replies
  • You may not post attachments
  • You may not edit your posts