IH DT466 swap

[BinderDan]

I know it’s been talked about on here, but has anyone ever actually replaced the 478 Hercules with a DT 466.
The LDT465 in my deuce runs good, but has a lot of blowby, to the point I can’t keep the valve covers sealed. It’s a tead rebuild with about 4500 miles on it

My dad and I salvage and collect IH tractors
and trucks the 466 is really familiar engine to me
Thanks Dan

 

[davidb56]

Im interested in doing it when mine needs it. Im guessing if you have the accessories on you dt466 such as air compressor, radiator and power steering pump for later upgrade, and use the transmission from the donor, it would be more engine/transmission mount fabrication, (which is simple for a welder) than trying to match bell housings, flywheel and clutch headaches. make your measurement carefully for fit, before committing to the swap. Be aware that your truck has a overdrive transmission, so you will likely loose top speed. I never go over 45mph where I live, so thats not a problem for me. There are a few ways to get a higher top speed if needed. I personally like the dt466 because its a true million mile rated motor. Most here will say go "cummins". It has been done successfully many times, and a few guys have REALLY nice truck$$$ with the Cummins.

 

[M35A2-AZ]

I have a DT-466 in my 1970 Gallion motor grader and it has a lot of hours on it.

 

[topo]

Somethings I ran in to when replacing the muliti fuel in my 5 ton with a mack engine.

At The front of the muliti fuel the valve cover is very close to the hood even the fan is below the top of the valve cover .
Best of luck keep us poster

 

[BinderDan]

I like the multi fuel it makes good power
Started right up this morning 15degrees no ether not plugged in but it’s got so much blow by
My thought being a fire truck it never got run and broke in after the engine was gone thru, 3000 miles in 32 years

 

[cattlerepairman]

No negative opinion of the DT466 here.

I think I would want to know for sure that the multi has a real problem before embarking on transplant surgery.

For starters, I would do the preventative maintenance it needs, load it up (5 tons of sand or gravel or whatever) and run it long and "hard" (I.e. staying below 2500 rpm but do hills, use the rpm band and keep it working), then re-assess blowby after having driven it like that for a week or at least a few times.

The multi can be in-frame overhauled if need be. Some here have done it.


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[BinderDan]

No negative opinion of the DT466 here.

I think I would want to know for sure that the multi has a real problem before embarking on transplant surgery.

For starters, I would do the preventative maintenance it needs, load it up (5 tons of sand or gravel or whatever) and run it long and "hard" (I.e. staying below 2500 rpm but do hills, use the rpm band and keep it working), then re-assess blowby after having driven it like that for a week or at least a few times.

The multi can be in-frame overhauled if need be. Some here have done it.


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I drove it 700 miles home from Tulsa Oklahoma
It hasn’t got any worse, but that was my thought as well pull the living snot out of it to try and break cylinder glaze

 

[BinderDan]

No negative opinion of the DT466 here.

I think I would want to know for sure that the multi has a real problem before embarking on transplant surgery.

For starters, I would do the preventative maintenance it needs, load it up (5 tons of sand or gravel or whatever) and run it long and "hard" (I.e. staying below 2500 rpm but do hills, use the rpm band and keep it working), then re-assess blowby after having driven it like that for a week or at least a few times.

The multi can be in-frame overhauled if need be. Some here have done it.


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What do you guys run for oil?
I’m running 15-40 Rotella

 

[cattlerepairman]

15-40 Rotella also. Maybe it is worth running John Deere break in oil for 500 miles or so to. I'd defer to some of the diesel mechanics here...rustystud...whaddayasay?

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[davidb56]

I'd make sure the blow by is actually from piston/sleeve and not from another source. Such as blocked line from the valve covers to the slobber tube, or air compressor problem pressurizing the crank case. It should be also burning oil too if it has excessive blow by. Hows the oil consumption? If it isn't going down, dont worry about it.

 

[WillWagner]

Check the blow by tube and valve covers where the blow by tube bolts to them. Silicone is a bad thing. So are mud daubers.

 

[BinderDan]

Breather tube is clear, I had the valve covers off and replaced the gaskets, ran the overhead as well. I know silicone is bad, at this point I’m just trying to get the oil leaks stopped

 

[cattlerepairman]

Loosen the compressor belt and run it... bad compressor can simulate engine blowby.

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[BinderDan]

Loosen the compressor belt and run it... bad compressor can simulate engine blowby.

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I will try that, I also notice the lack of filter or anything on my compressor, I will take pictures today

 

[snowtrac nome]

a bad turbo charger can leak compressed air in to the crank case through the compressor seal with out leaking oil back through the intake side I have seen this on holstet and cat turbos.

 

[BinderDan]

Pretty sure it is cylinder blowby at this point, when it warms up I’m gonna put my dozer on trailer behind and pull it hard