Firepunk 2000+HP Cummins Explosion!

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Published 2017-12-04

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.

All Comments (21)

@splob1981 6 years ago

Man, it's almost macabre in a way seeing the crankshaft still spinning and the connecting rods flop around like arms on a rag doll
@giorgiogroves 6 years ago

Makes for a nice abstract industrial art sculpture.
@groomlake51 6 years ago

I guess arp head studs are really THAT GOOD LMAO
@RohanSanjith 1 year ago

Damn, i can see the rod bearing, piston rings and thrust washer flying off!
@linchester8464 6 years ago

Holy mother of god. That is one heck of an explosion. From the slowmo. The piston near the dynometer was the first to throw a rod or just broke off sending the rest of the block sky high. Thankfully no one was in the room when it happen. I can imagine that block flying towards anybody will proof fatal.
@souleage2 6 years ago

I definitely think the check engine lights on lol 🤣🤣🤣🤣🤣
@buddylee19082 6 years ago

Ughh... you guys have heard of JB Weld, right?
@lobley357 6 years ago

When that 100 shot of nos Blows the welds on the intake manifold
@Rancher-xx5vt 6 years ago

I think this one will stand for a while as "Worst Dyno Explosion" of a Cummins apart.
@psychotikpaisano 6 years ago

Damn diesel you scary!
@ericbrandt8675 6 years ago

RIP to the Cummins AND the dyno....that wasn't cheap!
@stahlmanagementllc 9 months ago

To send or not to send that is the question that just got answered!
@harrygearhart4520 6 years ago

The guy in the booth got a purple heart.
@Thesongstaysthesame 6 years ago

Was that the sigma motor or CR?? Takes a pretty big set of balls to let this video go public. Just goes to show you what kind of dedication Lavon and his team have to driving this industry forward. They show the victory but also the defeat. Can’t wait to see what the do next!
@JoeBieniecki 6 years ago

Hardest thing to clean up after this is the guy in the window's shorts.
@livenhfree 1 year ago

Absolutely hilarious. The most epic engine explosion I've seen!
@piccalillipit9211 2 years ago

BRILLIANT photography guys...!!!
@groomlake51 6 years ago

Cylinder pressure is a mutha effer!! 🤣you Diesel guys are making us nitro guys look good now days! Party on🇺🇸🏁💯
@AmericanSurvival001 6 years ago

lavon miller quoting you from your above comments..... " D&J has a new billet block in production stages that will hopefully prove to increase block strength significantly." >>>>>>>>>>>>> I would think this will allow you to increase Turbo volume and PSI even further Allowing even more HP TQ gains so this would seem , not really a failure, but a realization of a weak spot and opportunity to redesign and increase capability the Sky's the limit Now... LOL
@Cnightz 1 year ago

That engine was like "Why y'all keep abusing me... fuck this... I'm outta here"