Here's A Triple-Turbo Cummins Diesel Blowing Itself Apart On The Dyno

This heavily-modified Cummins engine is seen dramatically blowing up during testing, with the entire block lifting clear of the bottom end
Remote video URL

The nature of dyno testing highly modified engines does mean things go bang from time to time, but we’ve never seen a motor tear itself apart quite as dramatically as this one did.

The engine in question is a triple-turbo Cummins diesel, built by Ohio-based firms D&J Precision Machine and Firepunk Diesel. Apparently it was running 146 psi of boost and around 2000bhp at the time of the test.

When it does go, the block, head and turbos blow clean off the bottom end. The crank continues to turn briefly after the majority of the engine exploded away from it, leaving conrods and at least one mangled piston flailing wildly in the air.

It’s quite a sight…

Source: Road and Track

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Comments

Richard Aylen

Reminds me of the ‘European Maid’ tractor puller, blew the engine in the same style then ran over the block

12/05/2017 - 19:04 |
0 | 0

Yeah, when high HP diesels fail it’s always spectacular because they’re running 100+ psi of boost and the bottom end can usually take it.

12/06/2017 - 13:43 |
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woulditfitonmyhonda

“it was running 146 psi of boost” That pretty much explains it

12/05/2017 - 19:37 |
12 | 0

How much does that translates in bar

12/05/2017 - 23:43 |
4 | 0
Wheel Nuts

The amount of black smoke coming out of those diesels is ridiculous. Seems like unnecessarily excessive pollution. The people standing around it do not want to breathe that stuff in. It’s not just carbon, its a nasty mix of all sorts of hydrocarbons and oxides.

12/05/2017 - 19:53 |
4 | 8

That isn’t unnecessary. Diesels don’t have to be at the stoichimetric ratio to run. They make nore power if they run rich. If you have unburnt fuel coming out of the exhaust pipe that means the engine is burning as much as it can. Turning it down to where there is no smoke means the engine can burn more fuel and isn’t making as much power as it could. Adding enough fuel to a stock engine to make it so you can’t see behind you is unnecessary, but when you have lots of boost you should have quite a bit of smoke until you build boost. The following picture is abit less than how much smoke you should have from an otherwise stock engine when trying to make HP gains.

12/06/2017 - 19:44 |
2 | 0
TheBagel

That is violent! Wow…

12/05/2017 - 20:19 |
2 | 0
7367Network

No wonder truckers call Cummins engines “Cummapart”

12/06/2017 - 00:45 |
2 | 4
DJ N

Wow, the Ram’s like a train at low RPMs on the trackside dyno!

12/06/2017 - 06:34 |
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Jefferson Tan(日産)

My reaction:

WHAT THE ABSOLUTE F*CK THE BLOCK SEPARATED FROM THE CRANK

12/06/2017 - 13:20 |
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Matthew Henderson

My reaction:

BWAHWHATTHESHITISABWRAWHPAHKGHARTSHIBVFHASDJKGFBSHALFGA

12/06/2017 - 15:06 |
2 | 0
Anonymous

Well I’ll make sure to stop at 145 psi because i want to play it safe.

12/06/2017 - 16:19 |
2 | 0
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