after market airflow meters

[Ron Schroeder]

At 03:43 PM 3/22/01 EST, you wrote:
>Hello Ron,
>
>    I think your formula is far to general to have less than a 50% error 
>factor in practice.  For example, (an actual case) the same engine on the 
>dyno tested with three different throttle arrangements (single, double, and 
>six).  Manifold pressure at WOT varied less than 2 inHg, HP varied by double 
>digit percentages at the same rpm.  Your formula would imply a 6% variation, 
>an error factor of over 100%.  I'm afraid it is not as simple as flow though 
>a pipe.
>
>Paul Saltwick

Hi Paul,

Yes you are right.  I could easily see this since the effective intake
length (and possably cyl balance) would change between configurations.

A better example of limiting the other factors would be the improvement
with changing air filters.  If WOT vac. is 1" with the origional air
cleaner then there is no way you would get a 10% HP increase from the Mega
Gold Pure Unobtainium Super Delux air filter.

G' nite,

Got to go drive my 30 year old carb. truck home.

Ron Schroeder
WD8CDH
E. E. S.
wd8cdh at bnl.gov
rjs at bnl.gov
ron at 112motors.com
631 344-4561 Day
631 286-5677 Nite
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