my motor is knocking and im not sure if its a spun bearing or a stuck valve. help please?

 

i also noticed that my oil pan is dented from the bottom. previous owner must have jacked the car up by it....could that cause any problems??

 

could have cracked the crank if it hit it but it prolly is spun bearing how is the oil pressure but the po would have to be pretty dumb to jack by the oil pan

 

well it still starts up and runs just knocks, would a cracked crank still even hold up enough to run? and idk i havent checked the oil pressure yet, the cars been sittin in my garage since it started knocking. and yeah, the po wasnt too bright about cars ha

 

can you haer round about where the nock is coming form. Are you sure its not a ping or tap.

 

I have the same thing going on. My motor runs great, and starts on the first rotation and has good oil pressure. After reading a lot of boards I think I am going to check my timing chain first to see if it is hitting the cover. If that's not it then I am sure it is internal.

 

its coming from one of the pistons towards the back of the motor , i cant tell if its cylinder 7 or 8 .... and its a deep knock

 

yeah its internal , if it were the timing chain it wouldnt be a deep knock i think.

you got a nice maro though

 

found out what it was. Shot wrist pin. should be fun to fix....

 

And you "found this out"... how? Only way to tell something like that is to tear it down.

If it's already torn down and it REALLY has that extremely rare and unusual problem you are saying it does, throw that thing in the trash and move on.

Money spent on a 305 short block is money wasted.

Heads, cam, exhaust, tune-up, etc., sure, as long as it's not 305-specific (like heads sometimes are); routine maintenance, of course; short block, never.

Sounds like it's time to install a "bore kit".

 

yeah i tore it down and thats what it was. and it seems about right that its a rare problem because all the "car experts" i had look at it told me it was either a stuck valve or a stuck lifter. and dont worry, im junkin that p.o.s. and hopefully pickin up an lt1 off of a friend of mine and havin a project for summer.

 

Is the oil pan dented inward or outward?

 

inward

 

I would safely say the dent did not come from anything internal. I have a dent on my oil pan that is inward also. The previous owner probably bottomed out on something, but the pan is still fine.