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Changing to international 238 motor to 4BT cummins engine


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I'm changing out the International 238 engine in a International TD8 dozer. I'm told I can use a 4BT cummons motor to replace it. My 238 is a Turbo Diesel engine.

1 st. Does the 4BT non turbo motor the same internal parts as the 4BT turbo motor, so I can just add a turbo to it and have it work, or does it have different internal parts that will not take the extra power from the turbo?

2 nd. What are the adapters (bell housing, fly wheel and'or center bushing) I need to make the conversion from the International transmission to the the cummons motor, so I can hook up the flex palte to the new motor?

Any help is appricated.

Tom

 

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4B/6B is the non turbo version of the B series Cummins, 4BT/6BT is the turbo version.  Not aware that there is a whole lot of difference between turbo and non turbo but I would suspect the cams are different.  Typically a turbo engine has a cam with more valve overlap to provide more piston dome and valve cooling.  Lot of people slap a turbo on a non turbo engine and hammer down, and mostly without problems apparently.

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A Cummins enthusiast board would be better suited from a knowledge standpoint on the internals of B-series engines. Maybe not from a personality standpoint but if you can get past the hazing... LOL

One thing I can tell you about the 4BT is to keep it wound up over 1500 at least. Don't lug them. They don't have anything down low at least in my experience.

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Thanks for the insight information. I've had the 238 engine rebuilt 5 times and it keeps having problems, the last the harmonic balance blew up and blew a hole in the block.

I'm tired of rebuilding it and the down time of not being able to use it.

Tom

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Over in the construction forum I think this has been discussed before. I would think it's easily doable, years ago we used to repower almost anything Cat, Deere, IH, Oliver, White an others using Cummins engines, I have all the sales handbooks with different flywheels and flywheel housing options to match them up. 

The little 4B's without a crankshaft balancer can work over sheet metal and filaments in lights an etc...that said Case hardly used balancer in any applications, skid steers, backhoes to name a couple never did run one. 

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15 hours ago, CIHTECH said:

 

The little 4B's without a crankshaft balancer can work over sheet metal and filaments in lights an etc...

We had a leaf collector at work with the Cummins 3.3 hard mounted. Usually 2 or 3 times during leaf season I had to weld up the cracks on the fenders caused by the vibration. It looked just like someone had taken a jig saw to it. Muffler fell off 2 or 3 times from the same thing over the 10 years we had it. Anything over about 2200 RPM the buzzing was unreal. We have that same engine still in a Vermeer chipper, but it's mounted on rubber mounts. Never had any problems with that one.

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You could feel the vibration at idle and lower rpm a fair bit with the 4B in 8820 Swathers too.  And that motor is a fair bit away from the cab.  
 

It always made me wonder how that motor must shake in a Jeep Wrangler swap.  I can’t imagine it being tolerable.  

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