K24 on 1.8T was what color is my K24

Bruce Bell bbell at surview.com
Thu Feb 7 09:18:52 EST 2002


The back of my matchbook says it will take VE=90%, a density
ratio of 2.6 at 6500 rpm to achieve 326 hp in a 1.8 liter motor.
Working backward I'd guess we're looking at 2.8-3.0 bar absolute
at the manifold assuming CE=72% and IC around 90%. I'm no expert
on reading boost maps but that 475 Cu/ft/min or .224
cu/meters/sec. looks to be off the k24 map. Did I do the math
right?

VE does rule, the WX at 5500 rpm has a VE=~66% while the WR is
close to 75%. If you think about it you'd have to run 18 psi in a
WX to get the same 200 hp produced by a WR with only 12.5 psi.
The same 18 psi in a WR should make 230+ hp.

Anyone have a WR cam they would like to sell?

Bruce



> -----Original Message-----
> From: quattro-admin at audifans.com
> [mailto:quattro-admin at audifans.com]On
> Behalf Of QSHIPQ at aol.com
> Sent: Thursday, February 07, 2002 6:38 AM
> To: quattro at audifans.com
> Cc: urq at audifans.com
> Subject: RE: K24 on 1.8T was what color is my K24
>
>
> --
> [ Picked text/plain from multipart/alternative ]
> Sure it can Javad.  MTM claims 326 with the stock k24
> unit on the 1.8t.  5
> valves means more energy in a smaller combustion
> chamber, cuz more air can
> flow in and out of it.  If the engine is more
> efficient (volumetric or
> thermally), it can and routinely does make more power
> with less displacement.
> Scott Justusson

> Javad writes:
> No way, hp is hp, and air is air, the 1.8 can't make
> more power with less
> d=isplacement.  Any turbo in a motor with less
> displacement is going to have
> =to work A  LOT harder to make the same power as in a
> large/r displacement
> m=otor...assuming the smaller motor is not increadibly
> more efficeient or an
> =F1 motor etc.Again, I'm thinking its not your garden
> variety AAN K24, if it
> is.Javad
>




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