A Detroit 500 engine riddle, can it be solved

If anybody out there has ever played with the timing on a mechanical diesel, if it gets to far advanced it will not acselerate.
If any of you have ever added gassoline to your fuel it will not acselerate and smokes white.
Motor oil has a very high flash point, I tried looking it up but did not find it, anyways it takes time to vaporise the oil to get it to be able to burn.
Any of you that have ever dropped an intake valve, when driving it pumps oil back into the intake, it does not run away.
I have seen lots of units splattered, cut in half, all the pistons in pieces in the pan, lots of things never from digesting oil.
I have seen N14's go to over 4,000 rpm, bent the push tubes nothing else. The 8V92's ran OK at below 4,000. Cats go above 3,000.
You can get an engine to blow up from a altered fuel system, not from oil.
Just a thought!

 

Address what caused the VW diesel to run away. I know what did. Oil. Orginally, there was only a tube from the top of the valve cover to the top of the intake plenum. The oil was sucked into the intake, and when enough accumulated, the oil was sucked into the engine, causing a runaway. I had this happen to me and several other people I know. VW's fix was to make the breather tube into sort of a T type, with a secondary outlet lower on the block, so that any oil sucked into the tube would drain back to the pan instead of going into the intake. Runaway problem solved for the most part.

This is not something that happened at an idle situation, the engine had to be at a higher rpm, as was the truck we are debating about.

I worked on these VW diesel engines for several years.

 

Give it up, it doesn't and can't happen the diesel god said so. I'd bet he's sitting at home with his fingers in his ears singing LA LA LA LA I can't hear you LA LA LA.

 

JohnP3 can you explain to me and few others, how was several runaway 2 stroke Detroit, including a 1271 TTA kept running after actually cutting (as using a knife and physically cutting) the fuel supply hose? what were they running on oxygen? these were marine engines, but I'm sure they weren't running with water.

 

There is a differance between an engine that revs up and one that blows up.

 

I'll type this slow so you can understand. Turbo blows, engine eats oil, engine revs higher than desired, anyone in immediate area runs, pistons close valves or hydro locks, rods exit stage left, engine junk.

 

ill throw my 2 cents in back in the 70s my dad carried a case of 20wt motor oil in the sidebox of his old 4070A international. it was his backup if he ran out of fuel (back in the day you didnt have a fuel gauge on the dash you had a fuel gauge on a stick) it ran on that 20wt pretty good never had to walk to get fuel! i know he always made me go for help while he took a nap.

 

Dry chemical fire extinguisher aimed at the air intake would have shut her down right quick.

Too bad they didn't have a mechanic working on it instead of these "Technicians" today.