I'd concur the SVR is underrated. Having come from AMGs (which are often underrated), this car feels much stronger than 575. I'll find an AWD dyno here in the bay area and see if we can prove it out.

 

So you can get almost 100 hp just with software?
Wow!

 

Yep.


Dave

 

^ What he said. These cars are great, I probably have a dozen 10 second passes on mine by now and the car just keeps going and going...

 

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/

 

Isn't 23% a little aggressive for the conversion factor? I thought it was usually 15-20%?

 

+1. ~15% for RWD and 18-20% forAWD.

 

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.

 

This is why I didn't want to use dyno sheets for the comparisons, every dyno reads different, and guessing the crank HP or torque from a chassis dyno result is far from accurate.

The trap speeds on the 1/4 mile are more indicative of power levels, the ET less so.

 

Agreed; unless we start pulling engines, it's more than a little grey....

Motor Trend got 447 RWHP on a 2014 V8S dyno......


Dave

 

hmmmm , that seems very high, my 2014 V8S on a dynojet came in at 406whp and 512whp after the tune ...

and Cambo thanks for immortalizing my quote ....

 

Yep; like Cambo said; every dyno is different.....

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

 

How about 1/2 mile trap speeds? Here are the results of the Shift S3ctor event in February. My car was #164
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.

 

Has this been resolved? I'm still wondering if the SVR is underrated. Anyone dyno'ed a stock SVR?

 

Peak #'s don't tell the whole story. Can't make a judgement based on those differences. Dyno is really only useful when comparing upgrades on the same car. Want to really know the performance, take it to the track.