My Rok spent some time this week on a hub dyno. For those that don't know what that is, see here: Chassis Dynamometer - Dynamometers | Dynapack (International Dynamometers Ltd)
Essentially a hub dyno removes the variables that strapping down, tyre pressures and tyre grip has on dyno figures and other than an actual engine dyno is the most accurate representation of what the power output of a vehicle is.
To that extent, the figures on record that this Brisbane tuner and DynaPack dyno operator (Guy at Harding Performance) has on file was most interesting.
NOTE: These are for manual (6spd) Amarok's in 100% stock trim. Auto will have different figures and since Guy now owns an auto TDI420, may possibly be available in the future as well.
Max KW
TSI 300 (118kw VW rated) 125kw at the rear hubs @ 4000rmin
TDI420 (132kw VW rated) 121kw at the rear hubs
TDI400 (120kw VW rated) 110kw at the rear hubs @ 3800rmin
Hub dyno figures include drivetrain losses, so the estimated actual output of the TSI300 is ~136kw and not 118kw .....
Torque figures
TDI400 - max torque 393NM at the hubs @ 1965rm/min - but then it goes into a steep decline ....
- 355NM @ 2500rmin
- 305NM at 3000rmin
- 2nd turbo kicks in and creates a small flat curve component - still 300NM @3500rmin
- 260NM @ 4000rmin
- 175NM @ 4500rmin
TSI300 - max torque 308NM at the hubs @ 2500rmin - curve stays flat till 4000rmin
- ~300NM @ 3000rmin
- ~300NM @ 3500rmin
- ~300NM @4000rmin (you get the idea)
- 250NM @4500rmin
- 225NM @5000rmin
- 200NM @5500rmin
So, at 3000rmin TSI and TDI making the same torque .....
What this means on the road is that the TSI will accelerate faster (0-100 and 80-120+) and that the TDI will better maintain speed with a load at 2000rmin (about the 110km/h speed limit) up a hill. That same hill will require a TSI with a similar load to gear down to maintain speed.
Essentially a hub dyno removes the variables that strapping down, tyre pressures and tyre grip has on dyno figures and other than an actual engine dyno is the most accurate representation of what the power output of a vehicle is.
To that extent, the figures on record that this Brisbane tuner and DynaPack dyno operator (Guy at Harding Performance) has on file was most interesting.
NOTE: These are for manual (6spd) Amarok's in 100% stock trim. Auto will have different figures and since Guy now owns an auto TDI420, may possibly be available in the future as well.
Max KW
TSI 300 (118kw VW rated) 125kw at the rear hubs @ 4000rmin
TDI420 (132kw VW rated) 121kw at the rear hubs
TDI400 (120kw VW rated) 110kw at the rear hubs @ 3800rmin
Hub dyno figures include drivetrain losses, so the estimated actual output of the TSI300 is ~136kw and not 118kw .....
Torque figures
TDI400 - max torque 393NM at the hubs @ 1965rm/min - but then it goes into a steep decline ....
- 355NM @ 2500rmin
- 305NM at 3000rmin
- 2nd turbo kicks in and creates a small flat curve component - still 300NM @3500rmin
- 260NM @ 4000rmin
- 175NM @ 4500rmin
TSI300 - max torque 308NM at the hubs @ 2500rmin - curve stays flat till 4000rmin
- ~300NM @ 3000rmin
- ~300NM @ 3500rmin
- ~300NM @4000rmin (you get the idea)
- 250NM @4500rmin
- 225NM @5000rmin
- 200NM @5500rmin
So, at 3000rmin TSI and TDI making the same torque .....
What this means on the road is that the TSI will accelerate faster (0-100 and 80-120+) and that the TDI will better maintain speed with a load at 2000rmin (about the 110km/h speed limit) up a hill. That same hill will require a TSI with a similar load to gear down to maintain speed.
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