OK - I poked around today for some info and equations...
...and I found this:
An old post
somewhere cited the following data from another (non-VW TDI) engine:
98.632 Hp
174.8 lbs-ft
So, back to Grade 7 and I did some cross multiplication to determine "X"...
98.632 Hp 117.9Hp
174.8 lbs-ft "
X" lbs-ft
X = 208.95 lbs-ft - which seems about right given what others usually post with similar mods.
If I base it on VW numbers for my engine (90Hp / 177 lbs-ft (IIRC) - 2001 model), then the figures work out like this:
90.00 Hp 117.9Hp
177 lbs-ft "
X" lbs-ft
X = 231.87 lbs-ft - I WISH...! LOL
I also used a basic set of equations to try to calculate the torque figures. Since the guy running the dyno was not familiar with dyno-ing TDIs, the whole thing is suspect - my printout has HP, but no RPM figures (thus no torque numbers). So, the math below CAN back up my math above, but it's based on a roughly 3,000 RPM horsepower peak - no idea if that's accurate or not...
Here's the longer math and the actual equation itself from
here...
TQ = (33000.0*117.9)/(2.0*3.1415*3000)
TQ = 3890700 / 18849
TQ = 206.41
HP = (TQ*2.0*PI*RPM)/33000.0
TQ = (33000.0*HP)/(2.0*PI*RPM)
where:
TQ = torque in ft-lbs
HP = power in horsepower
RPM = engine speed in revolutions per minute
PI = the mathematical constant PI (approximately 3.141592654)
Note: 33000 = conversion factor (550 ft-lbs/sec * 60 sec/min)Overall, the whole thing was a PITA - next time I'll wait until I take a trip the US and plan it properly. The local guys have very little experience with TDI cars. Given my choise was to skip it or run, I chose to run (obviously) and get the HP-at-the-wheels numbers. I don't think I would go back to my local guys again, though.