Sounds of the SD70ACe-T4 - EMD 12-1010J Prime Mover Idling! 

Sounds very reminiscent of a GE because of the four stroke engine, which I don’t mind. For those who worry about the sounds of EMD “dying out” you shouldn’t. There’s plenty of EMD rebuilds on the rails that will be sticking around for years to come.

Those sound eerily like the old 265H engines. I've heard one of these behind the Big Boy and it was unbelievably quiet.

Idles faster than GEs. Wish EMD was able to meet tier 4 standards with their 2 cycle engine instead. Nice to see CSX purchase something from EMD, as its been a while.

Sound of GE... R.I.P. legendary two strokes EMD. :'/

I have to be honest, this sounds better than those Tier 4 GEs, the new GEVOs are damn near silent compared to the older ET44s and such. Its like an old tractor, this thing, could listen for hours

That air compressor sounds like cicada in summer lol.

It’s nice to hear the sound of the 1010 while only idling. There is a lot of horsepower in only 12 cylinders. The 4 cycle sound is easy to get use to in the EMD. Hope to see the units in actual train service soon.

It's really unfortunate that CSX returned these to Progress Rail. This is beautiful, far better than any GE idle.

I like the sound of this new four-stroke 1010 prime mover from EMD. Very nice capture and video quality.

Rad shutters opened around the 4:30 min mark! Awesome!

I know technology must move on and EPA is forcing Tier 4 emissions, but EMD's 2-stroke sound is a trademark. Well, Caterpillar owns EMD which I think is good because CAT engines are another breed of tough and reliable engines.

Sounding like a GE is never a good thing for an EMD.

cool seeing the fan vent open and close

That air compressor sounds like an engine with no lubricating oil in it

They are still producing SD70ACes with the 710 under EPA Tier-IV credit program. Unfortunately, EMD hasn't really been selling much of either version as of late.

@5:46 ... never seen that before .... those look like "active" vents .....

I like those sd70ace tier 4 I have seen them in trukee California with a friend of mine not too long ago.

Love the air compressor but I'm pretty shure people are not going to like thim idling out side there house at night. I work for HALLCON and hoping to see one soon.

Maybe its an emdevo and its weird to hear similar sounds of an gevo in an GM or EMD

Wow first time seeing this video and that sounds just like a GE.

No more 2 stroke diesels. There all 4 stroke now. to comply with the new emissions. It does sound tougher than a GEVO. I Love SD70's There not EMD anymore either There owned by Progress Rail which is owned by Caterpillar.

Regardless what people are saying, this 4-stroke from EMD is still music to my ears.

you know what I think I went by you without knowing because I remember seeing these exact same engines going by this place around the same time as you

Cool shot of a really cool engine!

Something happened in the radiator at 5:23. Does anyone know what It is?

I hear hints of EMD and GE in this prime mover. But yes, it does sound more like a GE than an EMD compared to the previous generation EMD units. That's due in part to the fact that it's a four stroke engine instead of a two stroke. Different sound. That being said, I do like these and I wish CSX would buy more. 10 just isn't enough and it makes it hard to catch them. I've only ever caught one leading once. I'd also like if NS would give them another shot and BNSF as well. Thanks for the sound demo!

Honestly, these should be called ST90AHs, these are nothing like the SD70s. Hell, they don't even run on a 2 stroke engine

Noooo! the got rid of the 710’s and replaced it with the 1010j no more ying ying ying

Atleast it’s not so loud like the regular ACE, and can meet tier 4 emissions. I don’t understand what went wrong through. If I did I’d perhaps better understand why Amtrak hasn’t even asked EMD to make a tier 4 passenger locomotive to replace the Genesis locomotives, given the terrible reliability of the Chargers.

beautifull sound...nice shot

Too bad CSX returned these!

I like the sound of the SD70ace tier 4 better than the sound or the GE locos.

1:01 is that the compressor?!?! That thing’s loud!!

sounds like a GE 7FDL

Assuming that's the air compressor that came on at 1:00, I would figure EMD will need to work on a quieter model...

What's the traction effort on these? I'm guessing around 191,000 to 200,000 pounds?

Revisiting this video after quite some time: To those of you claiming these "sound like GEs" I ask in what way? Because they are both four stroke diesels? Are you also gonna tell me a Ford Coyote sounds the same as a Chevy LS? Cause nah. Stop being so reductive. LOL. Yes we are all sad that the 710 is (sort of) dead. Doesn't mean the 1010 isn't a prime mover to be excited about!

Very nice !!!

I’ll take an older “purring” 645 engine any day. And CSX has already sent these packing back to EMD.

Its coming up to 10 years since EMD introduce these EMD 1010J engines, how many are there is on service ?

Very Nice !!!

Nice....

The air compressor sounds like a turbofan starter pump that lost its sound seal and all you hear is bare metal.

Not bad wish EMD was still owned by GM!…sounds good tho!

Beautiful shot, and quality sound Isaiah! What’s the sound at the 1:00 mark? And I hear a hint of GE.

EMD-SD45 T2=EMD GT26 CW KOREA

Why does it sound like a GE?

That's ST70AH

The reason why those prime movers don't sound like the older EMD 2 stroke ones is because they are Caterpillar 4 stroke tier 4 emissions compliant ones. Guy Franks

Ain't this on rail unlimited on roblox right? Its call the eco freight

SD70ACe at least have the 16 cylinder 2 stroke Diesel. This version has the smaller 4 stroke engine. Honestly shouldn't even be in any SD models

KA CSX BABARANJANG NAZRIEL DAOP 1

What in the cancer is that air compressor? Bleck! What was wrong with the normal engine driven? Or even something like what GE uses. That’s just awful!

These new 70s are Just GE GEVO Ripoffs, No offense to the T4 Lovers.