Mercruiser 454 knocking?

Question:
I have a 454 mercruiser with a volvo 290, I just pulled the engine and outdrive I replaced the bellows,gimble bearing,ujoints all the normal replacment parts.I am having this rolling knock or rattle I have checked everything I can think of but it sounds like it is coming form the bell housing. any help would be appreicated. thank you

Answers:

Can someone explain to me how a neuclear motor wors as in a aircraft carrier?

it depends was it making this noise before you changed these parts or after, if it was after then somthing was put together wrong if not i would check to see if you either have a knock in your lower end of motor or just somthing loose rattling around, in the engine compartment of a boat noises can travel and throw you off of where its coming from so mabye try a stethascope to narrow down where its coming from.

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Subs. i have seen tiny subs go down to the bottom of the ocean deepest parts on tv .?

check the out drive to engine alignment ,this requires a alignment tool.make sure everything has grease.

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Are peanuts nuts?

if you look where the outdrive shaft goes throught the hull to the engine, you'll see a large round bearing...say 3-4 inches in diameter. it's called a gimbal bearing. replace it and keep it greased a couple of times a season & you won't hear that anymore. did you check the u-joints when you had it off before?

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Is Gate 10 in Southampton's port a building or just as it sounds? Wondering what happens when boarding p&o

Is it a Mercruiser or a Volvo? Exhaust anti-backflow flappers can cause a rattling sound, most notably at idle.

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