Blown Engine M35a2c

[ETHOS]

Sorry to hear about that.

Hmm...
If it was 'rebuilt' but not run much, then it could have been something not done/done improperly during the 'rebuild'. I had a 4-bolt main 350 one time that was 'rebuilt'. I was installing it in my school bus. For some reason, I decided to put a higher flowing oil pump and cooler on this engine. So when I had it in the stand and flipped it over, I pulled the oil pan. Guess what? the #4 connection rod bolts where just finger snug. That would have ruined my day on the test run! I whipped out the torque wrench and almost everything was loose.

Odd that the piston actually broke apart. Did you do the hydrostatic lock check when you started the truck? Usually the piston will not fail like that unless it hits something or is defective.

If you do pull it apart, we would love to see pictures. Not only so we all can discuss what happened, but we have a gruesome fascination with this kind of stuff.

explain the hydrostatic lock test please


is it cranking the engine with the engine stop lever being pulled to see that the engine cranks freely?


i am really sorry about your engine troubles, good luck

 

[Brock Steel]

Ouch, Bad deuce, She got mad and blew her top.

 

[Ferroequinologist]

GoHot, (Richard, right?)
The hydrostatic lock test is supposed to be done prior to every start. Yes, that is the test where you pull out the stop and bump the engine over to check for fluid on the cylinders.

 

[regicidal919]

The engine was a Continental. I will be sure to get pics up here as soon as I get the chance to take some. I will also take some pics once we get the motor out.

The truck is at a friends house right now as she is still hooked up to the tow vehicle.

The more people I talk to about it, it sounds like it was just a freak mechanical failure.

 

[Blood_of_Tyrants]

MV's are like any other vehicle IMO.
If you get a good one and take care of it...it lasts and does a good job for you.

Then...there is the unknown gremlin that just steps in and ruins your world for no apparent reason!! And there is nothing you can do to prevent it... it just happens!!

I would venture to guess this is the case here.

Multifuels tend to have a lot of gremlins. They never were the long lasting-heavy duty engines that the military had hoped.

 

[ida34]

Were you freeway cruising when it let go. I would vote for over rev. They are notorious for making block windows when run even a small amount over red line. The governor helps but if you were going down a hill it would still take the engine past the limits of the governor. I have to catch myself on the freeway as my truck really wants to run past the red line.

 

[regicidal919]

Very Sure there was no over rev issue, was well below redline.

 

[Boatcarpenter]

Well, regicidal919, I'm sorry to hear of your engine failure.. In a rather obtuse way though I am glad to hear of something other than a White letting go #2 rod. All of the stories to this point that I can remember have been of Whites letting go. Was beginning to think that there was some inherent problem with Whites that the others didn't have. Had me worried as I have a White in my Deuce.
Good luck with your engine installation and I'm looking forward to your pics.
BC

 

[regicidal919]

Crawled around the engine today. It was the #3 that let go. I actually found two holes in the block. It appears that the contecting rod came off the crank, it looks like the end or cap of the contecting rod came off and the crank forced the rod through the side of the block. I am no mechanic and sorry no pics yet. I would guess that since this was an arsenal rebuild that it was never tightened to spec.

 

[Peepaw]

Crawled around the engine today. It was the #3 that let go. I actually found two holes in the block. It appears that the contecting rod came off the crank, it looks like the end or cap of the contecting rod came off and the crank forced the rod through the side of the block. I am no mechanic and sorry no pics yet. I would guess that since this was an arsenal rebuild that it was never tightened to spec.

Sounds about right to me.

 

[dburt]

Or perhaps an overly enthusiastic young motorpool wrench overtightened the con-rod bolts and in doing so fractured one or both causing them to eventually fail due to extreme metal fatigue caused by the extreme stress of over-tightening. Wow, that almost sounds like a textbook explanation. Anyway, it is a bummer! As has been stated by others, we will look forward to the full autopsy report so we can all "go to school" on your experience!

 

[SasquatchSanta]

I think we all worry about this sort of think happening.

Sorry for your bad luck