1981 International S1824 tune up parts

Discussion in 'Triple Diamond Trucks' started by PineBrookFarm, Apr 9, 2020.


  1. PineBrookFarm

    PineBrookFarm Farmall Cub

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    Hey guys, new member here!

    I picked up a 1981 International S1824 w/ mv446 4-barrel carb. 2 speed rear end. 28,040 gvw. Truck used to be a Fire Department tanker truck which is now converted to a dump truck. It's aparently had the transmission out of a bigger truck installed in it, but I have not confirmed whats actually in it. I'm going through the truck and changing all fluids, filters, tune up, fixing rusty brake lines and repairing issues as I find them.

    For some reason I'm struggling to find parts online and locally for cap, rotor, plugs and wires. I've searched all over the internet as well as 2 autoparts stores. Either they cannot find the info on my truck or it lists a different engine and the 446 isn't available.

    Does anyone know NAPA part numbers for cap, rotor and wires? Also what spark plugs are the best to use. .030 gap?

    Thanks guys! Love the forum can't wait to learn more and hopefully help some of you guys out along the way as I learn.
     
  2. Kurt_M

    Kurt_M Farmall Cub

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    I'll take a stab at this, keep in mind this is going to be pretty "in general" and likely we'll need some pictures or a distributor number. That should have come with a Prestolite Electronic (internal control unit) distributor. That would use and NAPA AL162 cap, and an AL163 rotor. MV engines use tapered seat spark plugs, so Autolite 104 gap .035, plugs wire set Belden 700259. If your rotor looks like this one we maybe are on the right track, if not post up some pictures.

    rotor.jpg
     
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  3. PineBrookFarm

    PineBrookFarm Farmall Cub

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    Thanks so much, I’ll pop the distributor cap off tonight and look at the rotor as well as snap a few pictures.
     
  4. PineBrookFarm

    PineBrookFarm Farmall Cub

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    Looks like you were spot on! That rotor looks the same. So does that mean you happen to know what type of distributor this is?

    thanks so much! Much appreciated. Can’t wait to get this old girl back on the road!
    472EF887-8CF9-4826-824E-F7821F930803.jpeg 0B34A9AA-4D51-4F6F-8881-6DA01386139D.jpeg 47D3FC4D-4E21-49CA-811B-1A7FD53E863C.jpeg F68D4759-5B96-47D1-8E83-26E7995E97CF.jpeg ! 472EF887-8CF9-4826-824E-F7821F930803.jpeg 0B34A9AA-4D51-4F6F-8881-6DA01386139D.jpeg F68D4759-5B96-47D1-8E83-26E7995E97CF.jpeg
     
  5. Kurt_M

    Kurt_M Farmall Cub

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    The little tag held down on the side of the distributor with the screw will have the IH part number for the distributor and also will give the Prestolite model number as well, I think.
     
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  6. PineBrookFarm

    PineBrookFarm Farmall Cub

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    Great thanks again! I'm about 1/3 of the way through replacing every brake line with nickel copper lines and replacing the soft lines with new. Then I'll get the tune up done!
     
  7. PineBrookFarm

    PineBrookFarm Farmall Cub

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    So it turns out the truck has a 5 speed Spicer CM-6052-D transmission.
    Shift pattern
    R24
    135

    I read on another forum that the rations are :
    D RATIO 1ST-7.28,2ND-4.09,3RD-2.28,4TH-1.28,5TH-1.00,REV-7.28

    Anyone know anything about this transmission? Did some reading online and it looks 50w HD engine oil or 50w GL1 mineral oil for fluid. Anyone know what trucks these transmissions came in? I was told it was out of a larger air brake IH but not sure if that is good info or not.

    Curious if they are good units, any know issues, fluid capacity etc

    Thanks again!
     
  8. youric

    youric Farmall Cub

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    Not familiar with that particular model, but 50w seems pretty light for a heavier truck transmission. IMHO 80w90 gear lube would be a safer choice.
     
  9. PineBrookFarm

    PineBrookFarm Farmall Cub

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    my understanding is that gear lube doesn't work well with the synchros. but I have zero experience with larger truck transmissions.
     

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