Hyper Alert: Engine Damage (ring/cyl wear killing ignition to running carb'd engine)

[taco]

I have done that in my old carbed truck a few times. It usually back fires. So that was a key not to do it.

Manual fuel pump on it also.

[low&slow]

It seems to me that the OP would have needed to shut off the ignition at high RPMs and left it in gear for the engine to have continued to suck in enough gasoline to have washed down his cylinder walls of lubrication. I EOC frequently on my carbed motorcycle but I 1)close the throttle 2) Pull in the clutch as it idles down, 3) hit the ignition kill switch 4)shift down to neutral and let out the clutch as I continue my coast. Doing it this way shouldn't be any worse than any normal shutdown of a carbed engine. The engine needs
to be turning over to continue to suck in fuel, if its declutched or in neutral RPMs are zero. YMMV
L&S

[Old Mechanic]

Most of the later carbed engines had anti dieseling solenoids. Basically they shut off the fuel flow to the idle circuit when the ignition was turned off, to prevent run on or "dieseling".

regards
Mech

[Old Mechanic]

The 1908 Rolls Royce Silver Ghost would hold compression well enough so that if it was in just the right position when the ignition was turned on the engine would start with no cranking, just from the residual compression from the prior days operation.

Mazda is using a similar engine positioning strategy for their start stop operation.

regards
Mech