Completing the list with pipe sizes that we actually use....
2.25 = 3.9761 sq.in.
2.5 = 4.9087
Cheers,
Cale
Gmblows@aol.com wrote:
>
> Nice info... How about 2 1/4", and 2 1/2"?
> TIA
> GM blows
>
> In a message dated 4/13/00 2:30:14 PM Eastern Daylight Time,
> vencomatic@ameritech.net writes:
>
> << In fluid dynamics terms, there's more to it than just cross sectional
> area, but in a general sense you can rely on it for guesstimating
> comparative gas flow capacities.
>
> 1" pipe = 0.7854 sq. in.
> 1.5" = 1.7671
> 2.0" = 3.1416
> 2.75" = 5.9396
> 3.00" = 7.0686
>
> difference in areas between the 2.75 and 3.0 pipes is 1.129 sq.in., or
> look at it as 19% better flow. Again, this is a really rough
> calculation. You will note that dual 1.5" pipes only flow 50% of what a
> single 3" will. That is why you will find a 3" cat back Flowmaster on
> my truck instead of the more complex, heavier dual systems that seem to
> be so popular.
> Cheers,
> Cale
> 98cc318sporty
> >>
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