Explosion inside the crankcase?? That would be a tiny and insignificant explosion, compared to a larger fuel/air mist explosion in the engine spaces.
'Fuel-air explosives disperse an aerosol
cloud of fuel
which is ignited by an embedded detonator
to produce an explosion. The rapidly expanding wave front due to overpressure
flattens all objects within close proximity of the epicenter
of the aerosol fuel cloud, and produces debilitating damage well beyond the flattened area. The main destructive force of FAE is high pressure. More importantly, the duration of the overpressure gives it an edge over conventional explosives
and makes fuel-air explosives useful against hard targets such as minefields
, armored vehicles, aircraft parked in the open, and bunkers."
The nice folks at Wiki also include information on how to calculate the details of your explosion with various fuels--diesel not being a preferred one.
The FAS might be considered a more reliable source than Wiki.
But diesel, in general, is reluctant to explode.
Perhaps a sloppily stowed old can of paint
thinner, rusting through and then flooding the engine spaces (and that Edsel alternator) with something more explosive would do. Or, some cans of starting spray (ether) which is highly explosive, and might well be carried by someone trying to gimmick a balky engine.
I'll take an autographed copy if that works for you. And, a percent of the Hollywood movie