When big engines blow up

[DFBrews]

this is from an 15 liter Cummins that hit 2900 rpm the red line on these is 2100

This truck also DROVE into the shop like this how it did not throw a rod thru the block I do not know. estimated repair cost $42k
And that liner is supposed to go all the down to almost where the crank counter weight is in the first pic
enjoy

[IMG] IMAG0141 by post_james86, on Flickr[/IMG]


[IMG] IMAG0142 by post_james86, on Flickr[/IMG]


IMAG0143 by post_james86, on Flickr


IMAG0144 by post_james86, on Flickr


IMAG0145 by post_james86, on Flickr


IMAG0146 by post_james86, on Flickr


IMAG0148 by post_james86, on Flickr


IMAG0147 by post_james86, on Flickr

[nynco]

Wow..... and 42K is insane.

When people F up an engine, why the hell do they insist on driving it to the shop? Get a tow..... it will save money in the long run.

[spyder]

aw come on, jb weld that shit and put it back together!

[Hannu]

O-ouch...

[streetglideok]

Somehow, I dont think driving it in did anymore damage then towing it in,lol. What did this guy do to take the engine to 2900rpm? Think its a testament to Cummins, it still ran!

[DFBrews]

Somehow, I dont think driving it in did anymore damage then towing it in,lol. What did this guy do to take the engine to 2900rpm? Think its a testament to Cummins, it still ran!

the wrist pin was the root cause of failure... started puking oil into the intake and the engine ran away before it f'ed up the piston enough to lose compression.


The thing sounded horrible so close to throwing the rod the bearing cap bolts stretched and the bearing came loose and was hammered flat. and was just spinning in the journal causing even more problems. starving the rod of oil just compounding the issues. A while back we had a Cat engine that drove in with a broken crank.

[nynco]

Somehow, I dont think driving it in did anymore damage then towing it in,lol. What did this guy do to take the engine to 2900rpm? Think its a testament to Cummins, it still ran!

One thing I have learned in mechanics. The second you think there is something wrong, stop. Best example is detonation. If you hear it knocking or the computer shows, don't push it, fix it.

If this guy had thrown a wrist pin. Well that is bad news. But driving it longer with all the metal bits crunching through other parts of the engine or the cuts back on the amount of salvageable parts. Who knows, maybe the block could have been saved and just over bored a little. I am not an expert on big engines by any stretch. Just using stuff I have learned from turning wrenches in the past.