Re: highest compression on a cis e

[Dan Bubb <jdbubb@ix.netcom.com>]

Absolute Bull. Increasing the compression ratio has nothing to do with
mass air flow. How hard you squeeze what's in the combustion chamber has
nothing to do with how much air gets in in the first place. Total
pressure drop across the intake system, valve size, lift and duration,
engine displacement and intake air temperature will determine mass air
flow. CR may have some secondary or tertiary effect that is just as
likely to decrease mass flow as to increase it.  The amount of fuel
required also will not change, except for the possibility of running a
little richer to forstall the onset of detonation.

Shawn Rader wrote:
> 
Raising the compression has roughly the same effect as
> increasing the engines displacement - it increases the amount of air your
> engine flows.  With more air you can burn more fuel which means more power.
> By raising the compression from 11:1 to 12:1 your engine is flowing 9% more
> air at any given rpm- about the same as increasing you engine displacement
> from 2.1L to 2.3L.
> 
> -shawn
> '81 S
> 
> On Thu, 3 May 2001 08:35:05 -0400, J Miller wrote:
> 
> >  i am courious what the highest compression rate that the cis e  injection
> on
> >  a 1.8 16 could handle,
> >  i know 11:1 works fine but what above 12:1
> >  i need a car and i am just goign to slap the 2.1L in with the stock EMS
> and
> >  a few other minor mods
> >  Hey mr rust bucket i need an adjustable moduale
> >  jonas miller
> >  1976 2.0L 8v  scirocco   for sale
> >  1987 soon to be a monster 2.1L
> >  fzr 600 bleediun carbs
> >
> >
> >
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