Jaguar Forums - Jaguar Enthusiasts Forum

XK / XKR ( X150 ) 2006 - 2014

Quest for 425 HP

Thread Tools
 
Search this Thread
 
  #21  
Old 12-15-2022, 02:22 PM
Quadcammer's Avatar
Senior Member
Join Date: May 2022
Location: Clifton, NJ
Posts: 438
Likes: 0
Received 166 Likes on 123 Posts
Default
Originally Posted by ralphwg
I owned a 2012 XK vert which I had tuned and installed a Mina Galleries exhaust. See attached PDF. About 440 BHP at the rear wheels.
hmm. bhp is brake horsepwer or crank power.

You seem to make roughly 335rwhp. at a 20% loss, you're looking at 420crank hp, which isn't bad
 
Reply Like
  #22  
Old 12-15-2022, 05:26 PM
u102768's Avatar
Veteran Member
Join Date: Jan 2010
Location: New Zealand
Posts: 2,941
Received 1,488 Likes on 908 Posts
Default
I found the transmission loss to be around 10% on my '10 XKR when I was getting it tuned.
 
Reply Like
  #23  
Old 12-15-2022, 08:12 PM
viper1996's Avatar
Senior Member
Thread Starter
Join Date: Nov 2015
Location: CT
Posts: 778
Received 237 Likes on 139 Posts
Default
Originally Posted by u102768
I found the transmission loss to be around 10% on my '10 XKR when I was getting it tuned.
How did you make that conclusion?
 
Reply Like
  #24  
Old 12-16-2022, 06:27 PM
u102768's Avatar
Veteran Member
Join Date: Jan 2010
Location: New Zealand
Posts: 2,941
Received 1,488 Likes on 908 Posts
Default
By working out what the percentage difference was between the RWHP from the dyno and factory crank HP.
 
Reply Like
The following users liked this post:
viper1996 (12-17-2022)
  #25  
Old 12-19-2022, 04:23 AM
jahummer's Avatar
Veteran Member
Join Date: Dec 2008
Location: Florida
Posts: 6,186
Received 2,324 Likes on 1,460 Posts
Default
With the 4.2 R on a DynoJet, I found about a 16% difference between BHP and WHP.
 
Reply Like
The following users liked this post:
viper1996 (12-19-2022)
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
600HP or BUST!!
bamaboy473
XK / XKR ( X150 )
66
09-14-2022 07:08 AM
XKR 5.0 Chinese replacement Supercharger snout
DouglasXKR
XK / XKR ( X150 )
5
07-14-2022 10:12 AM
Which XKR Should You Buy?? - JAGUAR XKR 4.2 vs XKR 5.0 Comparison
u102768
XK / XKR ( X150 )
24
02-05-2021 05:57 AM
On the hunt for a XKR ....opinions please!
SLazz
XK / XKR ( X150 )
22
05-04-2019 04:55 PM
2010+ xkr, 5.0l, 510 bhp, am 5.9l ~450bhp...
rscultho
XK / XKR ( X150 )
19
04-19-2012 11:49 AM
Back to Subforum
XK / XKR ( X150 )
View Next Unread
Help finding a replacement car

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 



Advanced Search
Quick Reply: Quest for 425 HP


Reply Closed Thread Share

All times are GMT -5. The time now is 05:01 PM.