Re: [ihc] questions about older motor designations

["Ryan Moore" <baradium@xxxxxxxxxxx>]

----- Original Message ----- 
From: "Colin MM Rush" <salmineo@domain.elided>
To: <ihc@domain.elided>
Sent: Saturday, August 21, 2004 20:02
Subject: [ihc] questions about older motor designations


> In my research on the M-5, I have been reading about the older motors IHC
> made.  I am hoping some of the IHC cognoscenti can give me some insight
> into the letter designations of the older engines.  I understand what RD,
> SD, GRD, BD, BG, SV, MV, and LV means.  Does anyone know what FAB, FAC,
> FBB, FBC, HD, and FC mean?  I have a little figured out; such as FBB and
> FBC:  the second letter refers to the engine size/type, while the last
> letter indicates the design, sort of.  For example, the FBC was the newer
> design of the FBB, and the RD became the newer design of the FBC.  I do
> not know if there was ever an FBA.  The FAB and FAC motors were similar:
> The FAB was an older version of the the FAC, and the FAC was an older
> version of the BD.  Again, I do not know if there was ever an FAA motor.
> But what does the F stand for?  Does the B or A in the middle actually
> stand for anything?  And I am totally clueless when talking about the FC
> and HD.  What do they mean?
>

The A is the smaller and B is the bigger is something I notice right off.  A
and B probobly refer to size class.    F might be fuel type or that it's an
I-6.

-Ryan


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