Dyno results: 2.6 liter short block

[JShadzi at aol.com]

Its all pretty hard to say, especially considering different dynos and their respective correction figures.

The value of dynoing a car is in just that, having some sort of quantifiable figure to use _relatively_ against future runs, on the _same_ dyno.  Trying to accurately extrapolate crank HP is very difficut and typically not very valuable.  IME, a Dynojet dyno will pull about 20-25% out of the driveline, a dynodynamics dyno will need a higher correction figure, dynapack less, etc, etc.

FWIW, Chris really needs to take a bone stock NG back to that dyno to have a good reference to where he's really at.  On that same dyno I've made over 290hp at the wheels, and seem many cars with over 400 at the wheels (an A4 1.8t with 410whp to be exact), so when I see Chris's 114, and maybe some optimization would get it to 117hp, its kind of pointless.

Needless to say, I think Chris's results are what I'd expect and definitely within' the range of what it should be.

Javad

>I thought 25% (3/4HP left at wheels) driveline losses were commonly assumed
>for RWD applications. That would mean a 33% (4/3) multiplier to get back to
>crank numbers. It might be even higher on quattros. No BTDTs, though...
>
>Cheers,
>Brady
>Urq, 4kq, Z
>
>-----Original Message-----
>From: quattro-bounces at audifans.com [mailto:quattro-bounces at audifans.com]On
>Behalf Of Brendan K. Walsh
>
>> (1) Max power at the wheels is 114.2 hp and max torque is 122.4.  If you
>> make the (overly-simplified) assumption that hp and torque are 25%
>> higher at the crank, then we are looking at around 143 hp and 153 lbs of
>> torque.
>
>I thought it was more like 28%?
>
>
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