Perth-WRX.com  

Go Back   Perth-WRX.com > Technical > Mechanicals
Register Diddy Kart ArticlesAll AlbumsBlogs FAQ Members List Calendar Search Today's Posts Mark Forums Read


Welcome to Perth-WRX, click here to register!

Like Tree2Likes

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 31-03-2013, 04:21 PM
Sir AntiLag
Member
 
Join Date: Aug 2011
Location: .......
Posts: 354
Thanks: 1
Thanked 9 Times in 9 Posts
crawl3r at standard level
Default Power loss from factory

...
__________________
www.perth-wrx.com

Last edited by crawl3r; 05-09-2013 at 05:24 PM.
Reply With Quote
  #2  
Old 31-03-2013, 04:34 PM
RichX's Avatar
Perth WRX Old Skool Cool Dude
Member
 
Join Date: Oct 2006
Location: Pub
Posts: 4,137
Thanks: 31
Thanked 53 Times in 45 Posts
RichX knows their stuff
Default

Engine Dyno at factory compared to hub/roller dyno with drivetrain losses

So technically your "on paper" result from factory would more be around 240-250kw etc etc 7 years down the track with all your mods.

Last edited by RichX; 31-03-2013 at 04:35 PM.
Reply With Quote
  #3  
Old 31-03-2013, 04:47 PM
Sir AntiLag
Member
 
Join Date: Aug 2011
Location: .......
Posts: 354
Thanks: 1
Thanked 9 Times in 9 Posts
crawl3r at standard level
Default

...
__________________
www.perth-wrx.com

Last edited by crawl3r; 05-09-2013 at 05:23 PM.
Reply With Quote
  #4  
Old 31-03-2013, 04:50 PM
DukeDrifter's Avatar
Subaru Tech Division
Member
 
Join Date: Sep 2012
Location: nedlands/mine site
Posts: 1,649
Thanks: 87
Thanked 83 Times in 69 Posts
DukeDrifter knows their stuff
Default

yep, you understand correctly
__________________
Bitches love cardigans
Reply With Quote
  #5  
Old 31-03-2013, 05:08 PM
GX-REX's Avatar
Sign me up!
The Converter
 
Join Date: Oct 2006
Location: Hocking
Posts: 2,837
Thanks: 13
Thanked 20 Times in 20 Posts
GX-REX at standard level
Default

I'm probably way off with these figures but I think you loose around 20% through the driveline. So your 205 at the engine is likely around 160kw at the hubs.
Reply With Quote
  #6  
Old 31-03-2013, 05:59 PM
levans's Avatar
WRX Hi Five Club
Member
 
Join Date: May 2007
Location: perth
Posts: 190
Thanks: 4
Thanked 6 Times in 6 Posts
levans at standard level
Default

even taking off 20% is not very accurate as different cars have different drivetrain configurations like awd etc. The power loss comes from the clutch, seal drag, gear meshing, bearings, bushings and windage (drag on the gears caused by the gear oil) It all adds up.
Reply With Quote
  #7  
Old 31-03-2013, 06:08 PM
RichX's Avatar
Perth WRX Old Skool Cool Dude
Member
 
Join Date: Oct 2006
Location: Pub
Posts: 4,137
Thanks: 31
Thanked 53 Times in 45 Posts
RichX knows their stuff
Default

could even say, if you wanted to get seriously anal deep, some microscopic loss could be caused by the viscosity of the oil used in the gearbox.
Reply With Quote
  #8  
Old 31-03-2013, 07:57 PM
phizzle's Avatar
Powered by BP98
Member
 
Join Date: Feb 2007
Location: Perth
Posts: 3,283
Thanks: 43
Thanked 38 Times in 30 Posts
phizzle at standard level
Default

Area under the curve > poxy peak numbers.

Does it even do a skid, bro?
Mike likes this.
__________________
No more GC8, sad face.
[SIGPIC][/SIGPIC]
Reply With Quote
The Following User Says Thank You to phizzle For This Useful Post:
GTB Liberty (31-03-2013)
  #9  
Old 01-04-2013, 07:44 AM
jEstEr?'s Avatar
Insufficient registration
Member
 
Join Date: Jul 2005
Location: Perth-ish
Posts: 8,327
Thanks: 26
Thanked 64 Times in 47 Posts
jEstEr? knows their stuff
Default

Engine dyno - measurements are taken directly off the back of the flywheel. Compare this to how it would have looked on the hub dyno when you had your Verso



As has been mentioned several times, there is losses in drivetrain, coming from friction, heat, noise, not to mention the power lost turning everything before it gets to the wheels. There is no set number for drivetrain loss, it will be different for every car. Its also not a percentage, as there is no way a car losing 20% of its power with 200kw (40kw) is losing 20% of its power with 800kw (160kw) through the identical drive train.

We say it on here about every week, a dyno is useful for comparison ONLY with the exact same dyno under the exact same conditions. Comparing against different dynos in different locations will always lead to butthurt
rjb likes this.
__________________
MY93 Impreza GX 1.8L, 0hp, 0nm

Last edited by jEstEr?; 01-04-2013 at 07:46 AM.
Reply With Quote
  #10  
Old 01-04-2013, 08:42 AM
Sir AntiLag
Member
 
Join Date: Aug 2011
Location: .......
Posts: 354
Thanks: 1
Thanked 9 Times in 9 Posts
crawl3r at standard level
Default

...
__________________
www.perth-wrx.com

Last edited by crawl3r; 05-09-2013 at 05:23 PM.
Reply With Quote
Reply

Tags
factory, loss, power

Thread Tools
Display Modes

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

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
AVCS problems - midrange Power Loss WRXTASY Mechanicals 54 13-04-2015 01:56 PM
Loss of all power, which fuse is most likely? doadrift Mechanicals 4 28-11-2010 01:16 PM
Odd power loss problem... DiNGz General Subaru Discussion 16 28-08-2009 10:57 AM
Power Loss Serbaru Mechanicals 26 22-12-2008 11:29 PM
loss of power clubspec2002 Mechanicals 17 15-05-2008 06:37 PM



Welcome to Perth-WRX, click here to register!

All times are GMT +8. The time now is 10:36 AM.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO