From: Wayne Harris (papercu@hotmail.com)
Date: Tue Dec 28 2004 - 07:38:13 PST
It was my thinking that they didn't have a turbo simply because it wouldn't
fit the engine compartment and on the later 900 series they had to use a
smaller (physical size) engine to get the turbo in. The early 900 used the
250 the later ones used NTC-400(?).
you wrote "and to simplify operations. (no extend warm-up and no cool-down
required) and still have the restricted power requirement that the military
wanted."
My M816 has labels that say it has to have warm-up and cool-down time or did
you mean just less time than a duce?
I don't understand "restricted power requirement that the military wanted"
what does that mean?
Power vs Speed?
Thanks, Wayne
>From: Squirt_Truck <squirt_truck@yahoo.com>
>To: "Military Vehicles Mailing List" <mil-veh@mil-veh.org>
>Subject: Re: [MV] 5T turbo usage
>Date: Tue, 28 Dec 2004 05:47:03 -0800 (PST)
>
>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:
>
> > 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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