The Ford Barn

lalkie · 06-05-2025, 09:51 AM

Can a connecting rod be disconnected from the piston from the bottom. My plan it to remove the piston pin without exposing the lower ring on the piston. I want to see if one of the connecting's rods is bent. I did not want to remove the head. Any help would be appreciated. Larry

lalkie · 06-05-2025, 11:39 AM

forget it. I just tried to pull the piston out it is blocked. Thanks Larry

KULTULZ · 06-05-2025, 03:07 PM

Why do you think a conn. rod is bent?

If the pan is off, you should be able to turn the CS until you can get a good visual on the rod. Otherwise, you will have to drop the crank if not wanting to pull the cyl head.

Six volt · 06-06-2025, 07:46 AM

Many moons back I had a bent conn rod in my F100, 360. The engine developed a metallic thud sound that got louder over time. The wrist pin brass bushings disintegrated completely and showed up as gold fragments in the oil pan. So took out #8 piston (rod loose on the pin,) then the bend was clearly visible. Replaced the rod and it ran well for 100,000+ more miles.

flatrod · 06-06-2025, 08:57 AM

Best way to check bent rod is to check side clearance. All rods float on the crank pin, just see if they float side to side. Side clearance is only around .010 to .018 on a V8. If it won't float on the crank and the piston pin, its bound up somewhere.

Flathead Fever · 06-06-2025, 12:25 PM

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What makes you think a rod is bent?

06-05-2025, 09:51 AM	#1
lalkie Member Join Date: Sep 2019 Location: Colorado Posts: 35	Removing Connecting rod from the bottom of the engin Can a connecting rod be disconnected from the piston from the bottom. My plan it to remove the piston pin without exposing the lower ring on the piston. I want to see if one of the connecting's rods is bent. I did not want to remove the head. Any help would be appreciated. Larry

06-05-2025, 11:39 AM	#2
lalkie Member Join Date: Sep 2019 Location: Colorado Posts: 35	Re: Removing Connecting rod from the bottom of the engin forget it. I just tried to pull the piston out it is blocked. Thanks Larry

06-05-2025, 03:07 PM	#3
KULTULZ Senior Member Join Date: Aug 2012 Location: IN A GALAXIE FAR, FAR AWAY Posts: 7,386	Re: Removing Connecting rod from the bottom of the engin Why do you think a conn. rod is bent? If the pan is off, you should be able to turn the CS until you can get a good visual on the rod. Otherwise, you will have to drop the crank if not wanting to pull the cyl head. __________________ ***** "Last Sunday, I caught him makin' eyes at Idell Bushey durin' preachin'. And I know what they do up there in the hills when they say they're possum huntin'. They're just sittin' around the campfire, drinkin' hard cider, hittin' each other on the shoulder and hollerin' 'flinch!'." ― Charlene Darling (Daughter of Briscoe Darling)

06-06-2025, 07:46 AM	#4
Six volt Member Join Date: Feb 2015 Posts: 49	Re: Removing Connecting rod from the bottom of the engin Many moons back I had a bent conn rod in my F100, 360. The engine developed a metallic thud sound that got louder over time. The wrist pin brass bushings disintegrated completely and showed up as gold fragments in the oil pan. So took out #8 piston (rod loose on the pin,) then the bend was clearly visible. Replaced the rod and it ran well for 100,000+ more miles.

06-06-2025, 08:57 AM	#5
flatrod Senior Member Join Date: Dec 2012 Location: Anchorage Alaska Posts: 308	Re: Removing Connecting rod from the bottom of the engin Best way to check bent rod is to check side clearance. All rods float on the crank pin, just see if they float side to side. Side clearance is only around .010 to .018 on a V8. If it won't float on the crank and the piston pin, its bound up somewhere.

06-06-2025, 12:25 PM	#6
Flathead Fever Senior Member Join Date: May 2010 Location: Yucaipa, CA Posts: 1,360	Re: Removing Connecting rod from the bottom of the engin Sponsored Links (Register now to hide all advertisements) What makes you think a rod is bent?