Re: [MV] 5T turbo usage

You confuse me with your reply. The only useage of the Hercules LDS 465-2 engine is the M-656 series Ford built 8x8's. If the 900's you worked on had turbos - they were the Cummins 6CTA8.3 rated at 250HP. The 800 series and the early 900 series trucks were equipped with the Cummins NHC-250 (NA) rated at 240HP. To go further with this thread, it is my opinion that the military basically specified HP in their bids and, probably, took 'low bid' hence the back and forth between NA and Turbocharged engines. Robert Anderson 12/28[color=blue]
>
> From: Squirt_Truck <squirt_truck@yahoo.com>
> Date: 2004/12/28 Tue AM 07:47:03 CST
> To: "Military Vehicles Mailing List" <mil-veh@mil-veh.org>
> Subject: Re: [MV] 5T turbo usage
>
> Jim,
> The 800 series trucks use a commercial engine that has
> been "sorta militarized", the 900s that I have worked
> with use a turbo LDS-465-2 engine.
> The LDS-465 family (as opposed to the LDT-465
> family)share only the basic block components. The
> rods, pistons, heads, injectors, entire lubrication
> system and cooling system is different. It is a part
> of the fact that the LDS engines produce a
> significantly greater output.
>
> The move to a naturally aspirated engine was most
> likely an effort to control cost with commercial
> components and to simplify operations. (no extend
> warm-up and no cool-down required) and still have the
> restricted power requirement that the military wanted.
>
> Any other thoughts on the non-turbo approach will be
> appreciated.
>
> Squirt-Truck
> --- Jim Breneman <jimbre_7@yahoo.com> wrote:
> [color=green]
> > I am curious why the later 5 ton trucks such as the
> > M813, M923 use naturally aspirated engines instead
> > of
> > turbo engines? And why the older M54 uses the LDS
> > engine? My understanding is the LDS-465 (liquid
> > cooled, desiel fired, supercharged) engine is
> > basically the same as the LDT-465 except for fuel
> > pressure and boost. If anyone can help solve the
> > mystery for me I'd appriciate it.
> >
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