conversion question +

[Fred Miranda]

Hi Michael,
I've come up with different figures than you for the conversion.
All I have for specific gravity is for race fuels, two brands, this is
interesting.
               F&L                     76
100 UL .72                        .777
108L      .72
110L       .722                     .728
114L                                    .728
115L       .75
118L                                    .704

The trends are opposite. What's with that?
Looks like changing brands would require tuning changes also.

I did come across a post somewhere stating that in Au. 91oct was .73-74
and that 96oct was .76

Next for the conversion.
You had a figure of "4546cm^3/gal"
My calculator converts to 3785.4cc/gal

With my figures of spec grav ranging from .704 to .777
I get a range of 5.875 to 6.48 #/gal

At 01:20 PM 7/9/97 -0700, you wrote:
>Todd King wrote:
>> 
>>      A couple of questions; a) what is the conversion for gal/hr to
>>      pounds/hr for gasoline?
>
>Whenever you want to convert from the volume of a substance to the mass
>of that substance (or vice versa), you must know the density (or
>specific gravity).  In the case of gasoline, according to one of my
>references, the density of gasoline can vary from 0.66 to 0.69 gm/cm^3
>(at STP).  Split the difference, and call it 0.675gm/cm^3.
>
>I've worked out a conversion that will take one from ml/min to lb/hr,
>which is handy when comparing Bosch to US injectors.  Dividing ml/min by
>11.2 will give you lb/hr.  Conversely, multiplying lb/hr by 11.2 will
>give you ml/min.  
>
>In your case, you will need to arrive at the density of gasoline in US
>units.  I figure it to be 0.675gm/cm^3 x 4546cm^3/gal x 1 lb/453.6gm =
>6.765 lb/gal of gasoline, on average.  I'm sure someone else here will
>have a chart listing the density of gasoline in US units.  I don't.  But
>my calcs should be close.
>
>The rest is easy.  Divide lb/hr by 6.765 to get gal/hr, multiply gal/hr
>by 6.765 to get lb/hr.

>Best,
>
>Michael McBroom
>
>'87 745T 123k w/APC (batoutahell!)
>'88 765T 154k 
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