Jaguar's claimed power figures for V8 don't add up
#22
#25
A tuning shop down in Arizona tested a stock V8S and found it to be underrated, they were able to get 517HP at the flywheel.
https://www.dynocomp.com/blog/2014/0...r-f-type-v8-s/
https://www.dynocomp.com/blog/2014/0...r-f-type-v8-s/
#28
15% is a general rule of thumb for a chain drive bike which is quite a bit more efficient conversion than a shaft drive bike.
23% sounds reasonable to me for a shaft drive bike but I am not sure about the difference in efficiency between a bike shaft drive and a car shaft drive.
23% sounds reasonable to me for a shaft drive bike but I am not sure about the difference in efficiency between a bike shaft drive and a car shaft drive.
Last edited by Bushwhacker; 03-04-2017 at 07:47 PM.
#29
#30
Motor Trend got 447 RWHP on a 2014 V8S dyno......
Dave
#32
That said, using Cambo's examples (there have been faster times such as the MT test I referenced) of a trap speed of 119.5 and the actual weight of my car, the online calculators give us a RWHP of 463 and a crank hp of 503....which coincidentally is what the car is rated at 510PS = 503hp.
I'd say your dyno was way low.
Dave
#33
https://api.rss3t.com/reports/stats/6
Interesting speeds:
#172 - 2014 Jaguar F-Type V8S (495HP): 144.880 MPH
#122 - 2016 Jaguar F-Type R ( 147.155 mph )
#123 - 2015 Jaguar F-Type R ( 146.962 mph )
#124 - 2015 Jaguar F-Type R ( 145.536 mph )
#164 - 2016 Jaguar F-Type R ( 148.514 mph ) <-- MINE
#175 - 2017 Jaguar F-Type SVR ( 148.514 mph )
All these Jaguars were 100% stock as far as I know. Most other cars in the list were heavily modified.
#35