Cm570 help

[Corzlot]

I have a case ih stx 450 with a cm570 in it, with loads of problems. The boss is ready to swap out motors, but what would it take to put a cm870 in it? I understand the major emissions that would come with it, or is there a way to swap ecms and delete the emissions. This could be crazy on my part, but that's the direction we are headed. We can't find a used cm570 to drop in at the moment.

[Pd6cas2]

I just inframed my CM570 $39k ...
If Your crank and block are good, do what I did' inframe it. My engine the block and crank' the only things I didn't replace.
I did head, injector,intake,exhaust,jake rockers , both cams,oil pump, front gears, crankshaft wheel, counterbore block.
These are good engines but not as efficient like the CM871'
Bring it over to Griffin, GA to Mr Hagg..

[Corzlot]

We can't do an inframe. Tractor frame won't allow it. A rebuild is not what the boss wants right now. We have done that to this motor already, and it came as a "rebuilt" motor with 10psi. Piston cooling jet came out. But we found a used motor with a warranty for cheaper than I can rebuild it again. But it's a cm860. I want to know the difference, or what I could change to make it where my ECM would work. I was told just emissions, but I can't believe that.

[Pd6cas2]

I believe CM870 is first generation EGR.
I would rather recommend go to a CM871 and buy all the wiring, because your going to need alot of wiring magic and magicians.

[Pd6cas2]

Post what type of truck
Year, make, Model'
Alot of good guys here with good advice.

[Corzlot]

It's a 2003 case ih stx 450. I know it's a tractor in a truck forum, but I'm more worried about the motor side of it.

[Corzlot]

What I'm curious about is the difference. I had a cm870 as a donor for another cm570, and made it work with the manifolds, head, cams, injectors, and gears in front. But that was because the 870 needed to be rebuilt. But what I'm more curious about is what would stop me from swapping over sensors and wiring and putting my 570 ECM on? They are even comparable HP ratings. And I would swap over our manifolds, turbo, and any EGR delete I would need. The 570 runs, but major mechanical issues. Would the head be different? I can't necessarily see that. If it's just EGR and emissions, what needs to be changed?

[Pd6cas2]

I would call Mr Hagg for advice'
Haggai Truck Center
678-688-8107
Griffin , Georgia

[hhow55]

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RE: CM2250 Swap with CM870/871
Something does not sound right in your post to me. Possibly a mechanic blowing smoke up your arsse?. How far did the liner drop?. What did it measure?. What you describe sounds typical of only a few thousandths drop. There are hardened brass OEM 0.020" and 0.032" shimms avail for liner height corrections on the 2250's so that it can be counter-bored properly and this problem correctly and reliably repaired.

There is no way a liner suddenly dropped more than only a few thousandths before the head gasket went out. Even a 0.020" shimm is miles past whatever amount it has dropped. - If your mechanic does not know this, and the amoutn it dropped is actually only a few thou. then you best be finding a tow truck in a hurry and get the hell away from them, as nothing in that engine is likely to be re-built the right way after.

-- Sounds like the cheaper and most effective option just to fix it and go again for getting it back on the roads. Replace the head with OE, counter-bore it, overhaul kit, and go again ... Only when it is fixed,.. do it the right way so that it has its best chance to go another million on the inframe. Do all the recommended extra steps towards this ( some of those things are mentioned {HERE} ) and you will have invested your money much more wisely + get a far better return on it than simply slapping another engine in it.

- It likely can be converted over but ... Looks like your trying to justify a cheaper way out, but by the time you put all the effort and down time into the swap + straighten it out, your would have lost more money on it than simply fixing it in most cases. Not only that, but to make it legal, you will have to register it as a glider, have it emissions tested and have all the emissions systems for whatever engine you have used put on the truck too.

-- Lastly, you need to consider why it failed. -- Engines do not fail like that unless there is a reason. - Not solving the root causes is destined for you to repeat your mistakes that caused it to begin with, even if it is a different engine.

Some history on the truck/engine?, miles?, hp/torque rating?, rear ratios?, is it de-mandated (if so, by who?), type of freight hauling?, rpm range it is mostly driven in?, has it been driven right?- or are there hired drivers in it? -- etc.etc.etc.

Those are the things that come to mind (for me any ways) when reading your post.

Here's some good advice on what to do.