Thread: Smoky D4 video

Ah yes,the old Redex decoke!One of these would probably work if there was easy access to the air filter box ie clips instead of screws Element Fire Extinguisher Have to smash a hole in the cover?

Originally Posted by eddy

Ah yes,the old Redex decoke!

That brings back memories from too many years ago of the old man laying down a smoke screen big enough to hide a destroyer doing just that.

Martin

Originally Posted by shanegtr

you'd be suprised, I've seen photos of tanks that have failed and imploded under vacuuum apparently because of a plastic bag

Fuel tanks? Not surprised, they're not designed to hold any significant vacuum. An engine going bonkers would be approaching a 25" vacuum with a bag cover, for sure. There would be 30-40kg of air pressure load on a bag across a 75mm duct.

Originally Posted by bee utey

Fuel tanks? Not surprised, they're not designed to hold any significant vacuum. An engine going bonkers would be approaching a 25" vacuum with a bag cover, for sure. There would be 30-40kg of air pressure load on a bag across a 75mm duct.

No, I was more talking about this scale:
http://sache.org/beacon/files/2007/0...2-Beacon-s.pdf

I have never really thought much of Diesel engines
Purely from a toxic view point, the emissions from a modern diesel engine are extremely carcinogenic.
The particulate size (ie its very small) is mostly non respirable many pass through the lining of the lungs and go directly into the blood stream.
I love watching mummies sitting with a car full of kids on a hot day engine running AC on and not moving all the while sitting in a cloud of carcinogenic smog.
Pollution levels in big cities have increased dramatically in the sub 10 micron and 2 micron range, mostly attributable to the increased numbers of diesel vehicles.
Australia has the the second highest level of sulphur permissible in fuel as well. And we wonder why we have one of the highest levels of Asthma in the world?
Just look at any of the modern diesels under hard acceleration and convince your self that they are not killing us in droves

Bring on electric cars.........it cant happen fast enough

There is some great runway videos of 2 stroke Detroits on YouTube.

RUN AWAY Detroit Diesel! 453-T - YouTube

Diesel Runaway! Detroit Diesel 4-71 Runs Away After 30 Year Start, Old Guy Saves The Day! - YouTube


The TimberJack log skidders with Detroits all have an emergency cut-off flap in the blower housing operated by a cable.
However, the blower seals usually suck in and if their's an airlock downstream it can keep running.

I remember a bloke who used to work on barges in the Navy and he remembers 2 brand new Detroits running away backwards in a barge and they just let them blow. He said the engine room walls were imbedded with metal afterwards!

The R190 International GM 2 stroke V6 diesel i drove had the flaps under the blower to stop the engine running away. I remember the boss telling me "dont pull that cable unless the engine runs out of control". I had no idea what he meant till i seen it happen one day on another diesel engine. The mechanic shoved a phone book on the intake and that stopped it. He told me never use your hand or it can actually suck the flesh of it. True or not, i dont want to try it...lol.

Cheers Rod

Originally Posted by 67hardtop

The R190 International GM 2 stroke V6 diesel i drove had the flaps under the blower to stop the engine running away. I remember the boss telling me "dont pull that cable unless the engine runs out of control". I had no idea what he meant till i seen it happen one day on another diesel engine. The mechanic shoved a phone book on the intake and that stopped it. He told me never use your hand or it can actually suck the flesh of it. True or not, i dont want to try it...lol.

Cheers Rod

I know someone who accidentally pulled the emergency cable on a 3-71 instead of the regular stop cable & worryingly it kept running, albeit very slowly with a lot of blue smoke! Ideally the blower should've been pulled apart to replace the seals but as it was at idle when the cable was pulled it was ok in this instance. The main problem is the fuel injector control racks sticking.

I would definitely not want to use my hand. Most old timers working on the Detroits had a piece of plate with a handle to prevent fingers getting lost.