Technical 454 ouch...

Hard to imagine but this happened to my friends 454 that has never been over 4,500 RPM's and the rebuild is about 5 years old....what do you think happened, other than the obvious?

 

• Looks like it's image link broke.

 

I can't see any obvious damage.

 

Put your specs on Gawd.

@southerncad considering that your pic doesn't work why don't you articulate it a bit more.

 

Take a look at the pic now!

 

I think there was an Oil pan failure!!! It did not hold the rods in!!!

 

Looks like the connecting rod cap ether broke or wasn't torqued to specs.

I see at least one stud is still in the connecting rod but there is not a nut in sight.. HRP

 

1. Install rod caps in proper direction
2. Install rod cap nuts. Tighten snugly
3. Torque all rod cap nuts to spec.

Two out of three ain't bad, huh?

 

Sometimes actually more often then not the rod bolts are stretched beyond what is acceptable but the average builder seldom checks them. bad rod bolt equals disaster in the making.

 

marine engine?

 

my guess is they over torqued the rod bolts

 

Aka boat anchor? Lol

Something bad happening!!!

 

cast oil pan, never seen them used on car or truck 454s. Looks very boat like.

and yeah, it's probably boat anchor material, but you better have a strong winch to get it out of the water when it's time to sail.

 

No doubt about it, when the rod is sticking thru the oil pan, time to rebuild or replace the engine.

 

if it was a gen 6 marine motor the rod bolts stretched and failed .

 

"Lou-seeee! you got some esplainin' to do!!"

 

Nope high end mouse house. A picture window is a very high dollar option in that subdivision.

 

Can you get pictures of the crank, the rod and cap and the other rod on that journal?

 

This is (was) a Marine OR an Industrial engine. I have one that is the same color, aluminum pan, too.
Stretched rod bolt, possible and probable; loss of elasticity loosened the nut, and off it came.

Also possible is that nut (and possibly others) was installed upside down, OR had a scarfed surface, for whatever reason. (the 'why' of installing new con rod nuts on type l and ll VWs. After torqueing, the nuts were 'staked'...many general mechanics just re installed them with a slight 'bump' on their contact surface where they had been staked, and torque-and-stake to 'fly 'em'...
These were the ones that came back in 75-1,000 miles with a rod through the case.

Funny how some shit is all the same...

 

Blow-by???

The little man with the hammer in there finally broke out...

 

your sick ....very sick , does it come with a porch too ???

 

Positive crankcase vent for sure.

 

Cap-ectomy?

 

Thanks for your responses, and yup a marine block, I figured the rod cap bolt had stretched and knocked the nut right off....time to fix it now...
And Beaner, I agree with that window being an expensive addition

 

"Break On Through - To The Other Side" (courtesy of The Doors rock group)

 

The HOA will allow either a Porch or a Ferrari.

 

For me the missing rod cap nuts ,says it all.

............................ Jack

 

I'll concur with the rod bolt failure. IMHO if the end cap failed it would have just split and twisted out. The ARP rod bolts are so cheap, I couldn't imagine not purchasing that kind of insurance.

 

I told you to get rid of that Chinese torque wrench.

 

Positive Crankcase Ventilation.