[Diy_efi] The Hunt effect

[dh at busb.com]

Maybe I do, I'm not sure.  But a gallon of diesel fuel weighs more than a
gallon of gasoline and has more BTU's in that gallon.

The reason I'm not sure is that I believe that a gallon of diesel will have
fewer molecules per gallon than gasoline.  If the molar mass is greater then
the same number of molecules will weigh more, right?  If so, I'm sure that's
what I said.

dh

----- Original Message ----- 
From: "Becker, Damon (Damon)" <damonb at avaya.com>
To: <diy_efi at diy-efi.org>
Sent: Monday, October 10, 2005 2:23 PM
Subject: RE: [Diy_efi] The Hunt effect


I think he means the molar mass of the average-sized molecue in the
fuel.

-----Original Message-----
From: diy_efi-bounces at diy-efi.org [mailto:diy_efi-bounces at diy-efi.org]
On Behalf Of Ashley Evans
Sent: Monday, October 10, 2005 12:22 PM
To: dh at busb.com; diy_efi at diy-efi.org
Subject: Re: [Diy_efi] The Hunt effect



dh at busb.com wrote:
> As a general rule, not to be taken all the time.  The heavier the fuel

> the higher the energy available.  So yes, the heavier fuel might
> result in more heat in the engine.  Diesel fuel has more BTU's / gal
than gasoline.

What do you mean by "heavier" fuel?  Just higher Octane level?  From
what I've been lead to higher octane just reduces the likelyhood of
detonation allowing more compression/advance.  Does the octance rating
do more or do you mean something else by heavier fuel?

Ashey
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