Tick tick tick update (rod knock) ***putting it back togethe

[Dennyboy]

Re: Tick tick tick

ok guys i got it figure out...... we spun a bearing. now what do i do? i have a little scoring on the crank and rod. my finger nail barely catches on it. do i take it in and machine it?

if so what do i tell them? what size bearing should i run? what do i do with the rod?

 

[custom442]

Re: Tick tick tick update (rod knock)

engine rebuild time, go talk to a machine shop. Sorry to hear about that, seems like somebody sold you a bad apple. (unless somehow water got in during the intake swap)

 

[Dennyboy]

Re: Tick tick tick update (rod knock)

you think i'll have to rebuild the entire thing?

 

[pontiacgp]

Re: Tick tick tick update (rod knock)

you can just remove the crank and send it out to get polished and resized for new bearings if the top end is in good shape

 

[custom442]

Re: Tick tick tick update (rod knock)

not the entire thing, but you need to take it to a machine shop and have them check clearances if you busted a bearing. The crank will need to be machined. But we dont know where it came from or if it can be machined (most likely it wont be a problem but I've had an engine where it wasn't what I thought it was), your new bearings determined by how much is machined off the crank so no one here can really say. I'd have the rotating assembly balanced if it was me and I just threw a bearing, but thats your choice. If its bad enough it may need a line hone. Condition of rods is also something to keep in mind (may need new ones)

 

[Dennyboy]

Re: Tick tick tick update (rod knock)

do you think i would have any problems with the debris from the bearing? ive heard of machine shops re-sizing connecting rods. should i put in new studs?

not sure exactly as to why i spun a bearing.... do you think that they will want all the rods and crank? to check clearances?


never done this before, nor have i been this deep into an engine. it's been a learning process.

 

[custom442]

Re: Tick tick tick update (rod knock)

to tell you the truth man I would shop around for a machine shop and get a few opinions and quotes. Call some auto shops and dealerships in your area, they know who the good machine shops are. You could send parts off and mike things yourself but if this is your first time doing this and you want a solid motor you really NEED to have the block checked out. If its not done correctly or theres something you miss, may be doing this whole thing over again all too soon.

 

[Dennyboy]

Re: Tick tick tick update (rod knock)

well i don't plan on this being the last time this engine comes out. i want to learn this stuff and the only way to do that is to do it my self. I have a good machine shop close to my house. I also have friends that i can help if i get in a bind. i'm just asking questions here to make sure i don't miss some little things. I plan to get the crank into the machine shop, but should i send the connecting rods with it?

Or should i just bring everything in and have them take a look?

 

[custom442]

Re: Tick tick tick update (rod knock)

Or should i just bring everything in and have them take a look?

yes the whole bottom end, block and rotating assembly

... reason I say that is if the bearing went out on you that quick (less than a thousand miles since you've had it?) then there may be other issues as well

 

[pontiacgp]

Re: Tick tick tick update (rod knock)

did you spin a bearing or just destroy the babbit on the bearing? The reason I'm asking is there doesn't seem to be very much damage if you did spin a bearing. If there is just a slight gouge a machine shop can tell you if the need to machine the crank or just polish it. If the bearing did spin you probably damaged the connecting arm and cap and they would show discolouration from the heat