I think I can I think I can (AKA Locomotive thread)

[Exodus_2pt0]

Current view.

[payney8]

Have a read of this big girl. I did a cylinder head change on one. Was very impressive.

http://www.mtudda.com.au/attachments/article/246/20V_8000_M91_Low_Load_Factors.pdf

9100kw, I have seen them touched up to 9500kw on a special order.

4000 series, Ive done a few rebuilds on these.

https://www.youtube.com/watch?v=Qalfs2RQhBg

https://www.youtube.com/watch?v=uAnsqQnOPeA

[ThatOneEuroE30]

26psi in notch 8.



I did the math the other day, horsepower = torque x rpm / 5252.



Worked out to around 20,000 ft. Lbs of torque.

Damn that's alot

[Exodus_2pt0]

26psi in notch 8.

I did the math the other day, horsepower = torque x rpm / 5252.

Worked out to around 20,000 ft. Lbs of torque.

[ThatOneEuroE30]

Am I the only one who's curious to know how many psi these things push. I bet its a ridiculous amount.

[bikerbill2021]

ha nice, it might be something id be interested in down the road, like you i would like to keep turning wrenches, but i know that auto industry is going to wear me out sooner or later, we will see

[Exodus_2pt0]

I've been doing this for a little over 6 months now and I have found that there are 2 ways to get into the rail industry:

Have a very strong skillset that is needed, or,

Know somebody.

I got lucky, I had a resume on career builder with my ASE master certs listed and a cover page that mentioned my want to change careers. The company I work for was looking for an Engine guy, and I fit the bill.

Honestly, I wasn't looking for this job. I just got a phone call out of the blue asking if I wanted to move to Virginia and work on trains. I said hell yes and here we are 6 months later.

[bikerbill2021]

I truely love this job. So glad to get away from automotive but still turn wrenches. My mentality has turned from getting shit done fast, to spending as much time as needed to get it done perfectly.

Plus, all I can think about anymore is buying a house with a garage so I can wrench on the Trans Am for FUN again. After 10 years in the auto repair industry I couldn't stand working on my car anymore. My hobby is my hobby again. Though I have picked up some priceless knowledge along the way that will help.

how hard is it it to get a job in your industry? I'm an auto technician myself, but i don't plan on being one forever, i'd like to explore other areas like diesel tech, aviation, or this sometime down the road from now. just been kinda day dreaming about the future

[Exodus_2pt0]

Well I've been learning.

Turns out, the turbo on these locomotive's is actually a supercharger turbocharger hybrid. It is gear driven until exhaust pressure reaches a sufficient level to disengage a clutch to go into turbo mode. Pretty interesting stuff!

Oh, your car has 1000cc injectors? That's cute.




I truely love this job. So glad to get away from automotive but still turn wrenches. My mentality has turned from getting shit done fast, to spending as much time as needed to get it done perfectly.

Plus, all I can think about anymore is buying a house with a garage so I can wrench on the Trans Am for FUN again. After 10 years in the auto repair industry I couldn't stand working on my car anymore. My hobby is my hobby again. Though I have picked up some priceless knowledge along the way that will help.

[uberpanzer]

Are you sure about that? Wikipedia says the engine in a B17 is supercharged, not turbo.

The term used back in the day to describe these units on the B-17 and other aircraft (like the P-38 Lightning) was actually "turbo supercharger". Since that time, the turbo portion was kept, the supercharger portion was dropped, and 'supercharger' is usually used to describe ONLY those units spun by something connected to the crack or other mechanical means, not via exhaust gasses like a 'turbo'. Not surprising that over time, even the museums that have these things on display have gotten foggy on the terms. :(

[Exodus_2pt0]

Yea, only size 12 and up can get in.

Compression test time! Looking for 300+ psi. Some hit 350.

[slammin.e28]

Goddamn that is come cool stuff!

If only I did only have a size 11 boot, maybe I could get into working on this stuff.

[evil-diesel]

very cool stuff

[Pac1373]

^ Very cool, my kid brother is doing his 3rd block apprenticeship for working in the HD shop for Shell in Ft.mac Canada (Oilsands mine) looks similar in nature to the open pit stuff you have going on there... Also I used to play with some cat stuff like the 3412 3408, and even some old D398's...will last forever if you do the maintenance it seems, used to love doing oil changes and such on them, usually the best couple of hours of my day working rigs...mostly they drove generator sets for us in a Diesel /Electric set up running a bunch of big-ass traction motors...good times. cool thread is cool.

[payney8]

There ae 2 types of super charger roots and centralfugal both are supper chargers and both are referred to as blowers, but when you think of a blower you generally picture a roots type like 2 storke detroit diesles need to function properly.

Actually you will find the 2 stroke blower will not work if you try to use it as a supercharger. It is a roots type blower but it is pitched to only supply maximum flow therefore once pressure starts to rise it looses its efficiency and basically does nothing. Also in the later models they had a pressure operated clutch to disengage drive once the turbo's started to supply pressure. Trust me, i've rebuilt enough of them. Ive also done 71/92/53 2 strokes. I worked for Mtu/detroit diesel when i did my apprenticeship/trade.

Get ready for some pic heavy stuff.




Cat 3412



Mtu 200 common rail



This is what i work on now. 800 odd tons of fury.



Those little red dots in front of the centre trucks are people.