Re: Numbers - a good read

["Randall C. Markarian" <asenna@accessus.net>]

QSHIPQ@aol.com wrote:

>  
>
> *  26psi in 2nd thru 5th
> *  2.5 bar PT
> *  16+psi in 1st gear
> *  .5 PD accross modded IC
> *  Audi --> RS2 gets 310hp @ 460CFM
> *  1325 EGT
> *  Audi --> MC motor = 134ci
>
> The homework would be
> A) How does a 134ci motor flow 513CFM in 10v trim?  Can it?
> B)  Why such a large PR?  I thought Density Ratio was more the goal?
>  

If engine building were all math, anyone could do it.  So there much be
more to it.  Responsiveness of the engine, lack of lag cannot be defined
by the above numbers can it.  Anyone who has driven a peaky motored car,
say a Lotus Espirit, may not find that speed satisfying.  And that is
one screaming machine, in the right rev range.  Others might settle for
less power and more even delivery of said power.  I like the smile
equation, unless your gonna race that Audi of yours.  Maybe we ought to
find a dyno and test it. ;-) I gave up homework when I graduated.  
--

Randall C. Markarian

1990 V8 Quattro
1996 Merc E320
1987 5000 TQ

Saint Louis, Missouri