Over revved Pontiac
 

Should have used a forged rod.
https://forums.maxperformanceinc.com...1&d=1664417326

Wide parting line suggests that connecting rod is forged. And from what we can see of it, appears to be intact. I'm thinking that's a rod bolt failure.

Looks like maybe one of those RPM rod?

Frank, I hope it's not yours!!!

Pontiac made a bunch of the "Rubber Rods" which were forged, had the forging line, BUT were weaker vs the Cast Rods of the same time period. More info here.

https://forums.maxperformanceinc.com...d.php?t=795427

Tom V.

That's not a Pontiac. Looks like a large industrial engine or maybe a locomotive engine.

Eric

:) The rod almost escaped. On that DIESEL engine.

Looks like that might be an old 2 stroke Detroit. We had a few Deitroit series 60 Diesel’s in semi’s that would make it to about 700,000 miles then the two piece piston would come apart and the rod would exit the block just like that. If you got lucky the piston would get stuck at the top of the bore and skirt would stay connected and not completely destroy the block. If you got unlucky it would throw a rod thru the block.. We were 1 for 3 on destroying the 12.7 Detroit blocks.


Most rods I have ever seen get thrown and still run was a Pontiac stock car engine that developed a knock. It was years ago, we knew there was something wrong, and were trying to get the driver to come in. Instead he went 3 more laps. Lol…By the 3rd lap, full throttle, it thru 3 rods off the crankshaft. Still drove in on to the trailer. A couple years ago I found the carnage from it sitting in a bucket. Lol

Yeah that thick flange from left to right, among other features, should’ve been a dead giveaway

I am not sure what that engine is, those big crank case covers above the pan rails are unusual.

Good chance it's a GE Locomotive engine, they used to be manufactured in Erie PA, they later switched to a plant in Grove City PA. I used to work in the foundry there right out of high school. They cast the pistons, and cylinder heads where I worked.

Cooper Energy, also headquartered in Grove City PA, makes some huge. multi fuel stationary engines used in oil fields, etc.

The rare rural king PMD OHC-4 off road "Ram Rod 4". The Blue paint hints at the decade.

My comment in post #4 was to point out that all forged parts are not necessarily stronger vs a cast part.

OBVIOUS that the engine was an industrial engine by looking at the shape of the block.

PLUS the words in the topic heading were obviously in error.

Tom V.

That rod has cap screws.
This thread title is false.
Misinformation! Lol

Pontiac Ram Air V (Ford design) had Cap Screws holding the rod together.
Tom S has had these rods in the past I am sure.

Tom V.

Obviously not a Pontiac.

It was my shot at a bit of humour.



Because of the close up I thought it might have been a ship engine. Hard to saw how big the engine is, for me anyway.

Thanks Franky.

Tom V.

It’s not from a locomotive .

Yeah, it does look like an old Detroit and possibly a series 60 but I'm not positive about that. I only drove the dam things. LOL It wasn't from running it backwards. Maybe the engine over revved from a broken governor shaft.

Had that happen to me. The tack went around twice and started on the third time around before we could shut it down. It ran fine after the governor was replaced. I drove it from Manada Hill, PA back to Champlain, NY. Had more power than before the shaft broke. LOL Then our shop mechanics got ahold of it and turned back the power. :(