Re: New main bearing caps!

From: MV (MV@dc9.tzo.com)
Date: Sun Nov 20 2005 - 19:31:57 PST


I would bet that AM General does that to minimize pollution or maximize
mpg. A hotter running engine tends to be more fuel efficient at the
cost of engine life (sometimes).

Dave

G Shaw wrote:
> The run too hot a thermostat.
>
> -----Original Message-----
> From: Sonny Heath [mailto:sonny@defuniak.com]
> Sent: Saturday, November 19, 2005 2:31 PM
> To: Military Vehicles Mailing List; G Shaw
> Subject: Re: [MV] New main bearing caps!
>
>
> How do you set an engine to run hot other than by way of a different
> thermostat?
>
> Sonny
>

>
> ----- Original Message -----
> From: "G Shaw" <milspectruck@verizon.net>
> To: "Military Vehicles Mailing List" <mil-veh@mil-veh.org>
> Sent: Saturday, November 19, 2005 9:52 AM
> Subject: Re: [MV] New main bearing caps!
>
>
> Agreed on the Temps but that is still the cause of a lot of problems due to
> the high temperature. It is very easy to run a humvee at 190-200 by making
> some simple changes but the efficiency and the emmisions will change. AM
> General referred to have them run at the higher temps to achieve certain
> goals and set them to run hot.
>
> Glenn
>
> -----Original Message-----
> From: Military Vehicles Mailing List [mailto:mil-veh@mil-veh.org] On Behalf
> Of Cliff S
> Sent: Friday, November 18, 2005 11:31 PM
> To: Military Vehicles Mailing List
> Subject: Re: [MV] New main bearing caps!
>
>
> ..."......coolant temps over 200"........
>
> Our trucks generally run over 200 when they are warmed up. I know
> personally that my truck runs at about 220 constantly, fan on, fan
> off......Thats just the way it is. Then again I had a truck that ran about
> 190 towing another truck, uphill, in the desert of 29 palms........so there
> are differences. But generally they are set at 220.
>
> I say trucks......Im talking HMMWV's in the Marines.
>
>
>
> Cliff Smith
> SSgt USMC in Iraq
>
> M880 (4 sale)
> M274A5
> 6K GenSet
>
>
>
>
>
> From: "G Shaw" <milspectruck@verizon.net>
> To: "Military Vehicles Mailing List" <mil-veh@mil-veh.org>
> Subject: Re: [MV] New main bearing caps!
> Date: Fri, 18 Nov 2005 15:00:20 -0500
>
> Hi Dave
> Failures are no different than any other engine, just wear and tear and old
> age. There are heat related issues such as cracked heads and blocks, fuel
> system issues as well same as with any diesel injection system. The
> cracking issues revolved around increasing the displacement up to 6.5 l. and
> turbo supercharging it to produce more power without properly addressing
> heat. The engines are very successfullly used in marine and stationary apps
> also. If the engine is run with the coolant temp not over 200 the engine is
> very reliable, above that your taking your chances.
>
> GS
>
>
> -----Original Message-----
> From: Military Vehicles Mailing List [mailto:mil-veh@mil-veh.org] On Behalf
> Of MV
> Sent: Friday, November 18, 2005 2:51 PM
> To: Military Vehicles Mailing List
> Subject: Re: [MV] New main bearing caps!
>
>
> What is the normal failure mode of these engines??? Do they simply lose
> compression and die that way or ????
>
> I hear of a lot of injection pump problems and cooling problems but the
> cooling issues seem to be related to lousy radiators, etc, not necessarily
> the engine itself.
>
> Was this engine ever used in a marine application??
>
> Dave
>
>
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>
>
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>



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