Crank Bearings?
 

Is it possible to have bad crank bearings? i was looking at buying another truck but they told me it may needs the crank bearings changed out soon, what does this mean???

Re: Crank Bearings?
 

It means you should only buy the truck if you plan on rebuilding the engine :) Seriously, anything can go bad...but I can't imagine how they know that's the problem...

Re: Crank Bearings?
 

how do u tell if they are going bad? will it make any noises?

Re: Crank Bearings?
 

YEAH, instead of the growly, rumpety, whirring noise that you normally hear, it sounds like a grindy, chunk, chunk, clunkety clunk, skkkkrawwwwwky noise. It is a sound that you will never forget.

Re: Crank Bearings?
 

oh well this truck runs good and it doesnt knock or anything like that or make any grinding noises.. so im guessing they are okay? he just said its a old motor and it may need new bearings soon and i need to keep oil in it...

Re: Crank Bearings?
 

How is the oil pressure when it warms up? Low oil pressure could be the reason they think it has bad bearings, ...or it could be that they have no idea what they are talking about and someone told them that.

Re: Crank Bearings?
 

you'd know if the crank bearings needed to be replaced soon...

Re: Crank Bearings?
 

That's my take :/ Basically, they're telling you that the engine isn't sound so that if you come back to them the day after buying the truck with a blown engine they can say "Hey, I told you so".

By the time you can hear a bearing clearance problem, the bearings are spun.

Re: Crank Bearings?
 

There basically telling you it needs a motor. Mains knock under light load.

Re: Crank Bearings?
 

it doesnt make any knocking sound i reved it up etc and no noises except for a lose exhaust....

Re: Crank Bearings?
 

what is low oil pressure for a sbc??

Re: Crank Bearings?
 

well i think i know why they said that.... when u first start it up u can hear a knockish/rattlish sound only for a few seconds when u first start it and then goes away. i let it warm up and i never heard it come back... they say its probably exhaust hitting somethin or lose but could be bad bearings, what do yall think? they dont know anything really....