LDS 465 1a rebuild or repower ?

[topo]

I think if someone has the original Mack engine in there truck they could use a lot of the exterior parts to repower with a 300 horse power Mack engine maybe even a 350 . The mack 350 is a lot of horse power . I don't know about the new Mack engines but the older ones the horse power is rated at the ground other makers rate there horse power at the fly wheel .

 

[rronning84]

This a very cool engine swap.

 

[Mack Attack]

Mack had the advantage of know what their engine was powering so they could match the whole rig up perfectly. So everything works perfectly balanced and in tune with each other. The other diesels only had to make the engine was good to go.

 

[topo]

Yesterday I was able to drive on the highway to heat up this engine to see if there was any problems I could not find before it had some small leaks that have been fixed .I was watching water temprature the thermostat is a few inches above the top of the radiator I need to work on fixing this . I drove about 20 miles up the highway in to Colorado pulling the trailer to work the engine on the few hills weight was about 36,000 . Top speed was 39 MPH . The temp would hit 200 I turned on the fan and it would drop slowly to 190 on the return trip down hill with out the fan it would only reach 160 degrees . The out side temperature was around 40 degrees . I will take it to town this next week to see how it drives in town .

 

[topo]

Up date I have driven the truck for about a year with a electric fan it is not enough to cool the engine with out a trailer and cool temperature out side it cames close .Over thes time I was checking for engine problems like heating or fuel and turbo . I bought a military mack water pump assembly and maifold these sit lower on the engine . the new water pump is farther from the block and did not line up with the crank pulley I had to move the balancer closer to the block to line up the pulleys I pulled the balancer and the hub off the crank and cut 11/16 off the back of the hub put it back on the crank then turned the balancer around so the crank pulleys would fit .

 

[topo]

I changed the power steering reservoir to one that mounts on the pump less fluid also two less hoses . To do this I had to change the air intake and move the filter housing rearward on the fender . Also reworked the cover that hides the fuel filters. I rased the radiator about 5/8 of a inch thats about all it will go to clear the hood I used the 20 inch fan from a multifuel had to drill it to fit the mack water pump . Driving the truck last night it heated up to 180 with out a trailer .

 

[topo]

I replaced my M52A2 engine with an civilian Mack engine about ten years age and it has been a great engine . When I find military Mack parts I swap then out for what I have on my truck . When I bought this from a salvage yard I paid $500 for two motors and the one I put in has been great . I found a military oil filter assembly on line and took off the big filter thing I had mounted on the power steering gear box .I put O rings on the Ross power steering spool and changed some gaskets . there is a great thread by Mc Duff and Rusty stud on this steering box and a video on You tube if you look up Hydraulic steering principles of operation 1956 .