Engine explodes on dyno - GIF and video

Cummins diesel engine explodes on the dyno.

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1:50 source video:

https://www.youtube.com/watch?v=RUquK_6WIjk


Previously:

https://www.homemadetools.net/forum/...6845#post84468
https://www.homemadetools.net/forum/...062#post115400
https://www.homemadetools.net/forum/...082#post125698
https://www.homemadetools.net/forum/...992#post112107
https://www.homemadetools.net/forum/...028#post120267
https://www.homemadetools.net/forum/...2868#post97375
https://www.homemadetools.net/forum/...2265#post95890

This is the engine builder's explanation for the failure.
"
We had just crossed 2200HP at 146psi when the 6.7L Cummins block simply couldn't handle the pressure and separated! We have done over 3000HP on this longblock setup so we feel like it was definitely a premature failure, but we see no signs of a problem in the datalog, pistons or rods before the block split. It looks as though the failure was simply stress fatigue to the OEM Cummins Block. The Longblock had been Modified by D&J Precision Machine with a Deckplate, 1" longer rods, ductile Iron Sleeves and 9/16" head studs, main studs and custom girdle, all which held up to the abuse had the block not failed. D&J has a new billet block in production stages that will hopefully prove to increase block strength significantly.
"

Machine is wiggling, repelling to die..!

Can’t make sense of the photographs in the video. It seems that they are a compilation of many other failures in addition to the original one. In some of the failures the crankshaft connecting rods and pistons remain connected to the dynamometer the initial failure that this video is supposed to represent it looked to me like the Pistons were thrown from the wreck and I could not tell if the crankshaft remained attached to the dynamometer.