dibbons
Well-Known Member
Some us might be curious where connecting rods fracture when they "give up the ghost". Can anyone share some fotos of such failures? Thank you.
Show photos of your broken/busted connecting rods!
- Thread starter dibbons
- Start date
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This will be interesting. I have thoroughly abused dozens of Mopars. I missed gears, over revved, floated out, drove 3 miles with a blown frost plug but I have never broke a engine. Timing chain went out on my Road Runner and had to have it pulled home but that's it.
dibbons, does it need to be a dodge? All I've got is mangled chev stuff.
dibbons
Well-Known Member
We are talking Mopars here.
let's see bought a set of stock "reworked rods"...balanced...beams polished..new arp rod bolts...shot peened....broke after the 5th run...shifting at 6200 rpm....using with a kb107 pistons...
broke a set of stock rods ..shifting at 6500...swinging a heavy dome TRW pistons...at 7000 rpm thru the traps went it broke
broke a set of stock rods back in the mid eighty...pretty much destroyed everything in the block...
picture of rod that broke on its 5th run.....
broke a set of stock rods ..shifting at 6500...swinging a heavy dome TRW pistons...at 7000 rpm thru the traps went it broke
broke a set of stock rods back in the mid eighty...pretty much destroyed everything in the block...
picture of rod that broke on its 5th run.....
TimsGT
Well-Known Member
Sucks your motor blew but the way that rod got twisted is awesome!
5th run that i had it.....that is the problem with using stock rods...you dont know there history unless you bought the engine new....dont know how much abuse they have had...how many heat cycles....Only stock rods for engines that cruise around town...I know MOpars dont break....
MiradaMegaCab
Well-Known Member
Stock 318 rod and piston with 6PSI of boost and a 200HP shot of N20.
Damage was caused by hydrolock.
Unknown RPM's as my tach only goes up to 8,000 and it was buried.
If you can't blow it up with the blower, the nitrous will blow it up! Lol
I had to disagree Tony, because that is an ugly mess.
I must be one lucky SOB because I've never blown an engine either.....even after spooling a 44O to 7300 for over 300 passes! Most of my cars have been airborne several times and have spun them out on the beach doing 60+ with the throttle matted.....doing neutral drops were common along with going from drive to reverse floored at 40 mph and going back into drive. Did this kind of crazy crap for many years. The list is long! Some of my friends refused to ride with me even after telling them I would act normal lol
pishta
I know I'm right....
I pulled the pin out the bottom of a piston in a 340, revving it for a potential buyer! Oops! I lost a rod cap in a 318, must not have torqued it down. I also windowed a 351C, kicked rod right out of passenger side of block. darn thing was still idling, just puking parts out the side.
TrailBeast
AKA Mopars4us on Youtube
Now THAT I can relate to.
I cleared a 4 foot barbed wire fence and landed it in plowed dirt without a hitch, then buried the car in poison oak.
Had to roll the windows down to get out and we all got it.
My Brother was scratching his crotch for a month.
How about a broke cast crank. 318 out of a 75 valiant. Not sure what happened, it died on the guy and he gave me the car. All the bearings were fine, no sign of any other failure inside the engine.
Any engine can fail if not built right or pushed beyond it's limits. Unscheduled engine disassembly! A couple of big ouches pictured above.
That's crazy you said that, Back in the late 70's I had a 70 340 cuda with a slap stick shifter round knob with button on top. I was getting on the xway full throttle low gear and hit the lever apparently hitting the button and put it right in reverse at full throttle at 6000 rpm. The 340 never slowed down just started smoking the tires in reverse and the car got sucked down to the ground and I smashed my face into the steering wheel (no seat belt) so I couldn't get my foot off the gas so I just pulled the lever back and the car about jumped off the ground and off I went down the xway like nothing ever happened, never hurt a thing except my nose.
Oh man, that's funny! A buddy of mine had his mom's station wagon and was 'demon-strating' his skills to several of us that were standing around watching. IIRC, it was a mid 60's big Plymouth and he was going to manual shift the automatic and I guess he got a rambunctious with the shifter and stuck it into reverse. The car nosed over and saw the rear end bounce up off the ground lol. It killed the engine pretty fast but he probably let off the throttle too thinking something was wrong (you think?) and then he had a hard time getting it started back up. We were laughing pretty good about then....
Marcohotrod
Well-Known Member
reworked rods should be magnafluxed. my 340 has reworked 3418645 rods going to 7000 since 1995
65Val
Average Length Member
Here's mild one in comparison....
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Magnafluxed rods is not a guarantee, just makes you feel better until the rod or crank lets go.
dibbons
Well-Known Member
I thought automatics had a valve or something so that reverse could not be engaged from drive position. Guess not?
fratzog lover
Well-Known Member
Mopar must have chosen Eagle as their crank producer back then!
Krooser
Building Chinese Free Engines since 1959...
That broke at the rods weakest point...
Many rods break after an oiling failure... look for the "black death" coloring around the big end.
Krooser
Building Chinese Free Engines since 1959...
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