What does spinning a bearing actually mean?
 

What physically happens when you spin a bearing? If someone's motor seized cause it spun a bearing will it be salvageable? what physically happens?

Re:What does spinning a bearing actually mean?
 

dosent the bearing seize to the crank and spin out of place from the lack of oil.im probably wrong but i do know sometimes it does hurt the block.but i think ive heard of like having them machined and putting oversized bearings in or something like that but im prob wrong. just what ive always thought ???

Re:What does spinning a bearing actually mean?
 

it means is oil was low and the rodbearing spun around the crank with no oil lubing it.the crank will be no good ever again.so it means new block time.

Re:What does spinning a bearing actually mean?
 

waite mike.If you throw a ROD bearing the block is no good couse the crank is no good.Sorry but that doesnt make sense.I allways thought it was what alwaystootall said.

Re:What does spinning a bearing actually mean?
 

but once you scar the crank journals it will continue to eat every bearing you put back on it.so new crank means just get a new block.

Re:What does spinning a bearing actually mean?
 

i think what he means is that once you scar the journals then in order to get that fixed you either need the crank spraywelded and reground (not worth it) or get one from another car which will be a serious PITA because then you have to resize all the bearings in the bottom end because your dealing with a different block and different rods etc... or you can get another engine and not worry about it.

Re:What does spinning a bearing actually mean?
 

so basically Iit's a toss up? if it's a rod bearing that spun then it's not too big of a deal, but if it's a crank bearing it's fucked?

Re:What does spinning a bearing actually mean?
 

teh rod bearings go around the crank, between teh crank and rods ;), then you have main bearings that sit between the block and crank. if you "spin" a bearing, more than likely you'll need a new crank, sometimes you can get them micropolished, but just b/c you need a new crank, doesn't mean you need a new block, they're are people with busted blocks (cracked sleeves, etc.), that will sell the cranks for next to nothing.

Re:What does spinning a bearing actually mean?
 

exactly....i have a freshly cut crank in my garage in case i ever ---- up a rod bearing.

Re:What does spinning a bearing actually mean?
 

get the crank machined with oversized bearings.

Re:What does spinning a bearing actually mean?
 

i have a engine that spun a bearing. it all has to to with what was the damage that occured when the bearing spun. I micropolished and oversized.025 on the bearings. will see what happens when i start her up.

Re:What does spinning a bearing actually mean?
 

I spun every single bearing in my engine. :'( It does not necessarly mean new block and crank. They align bore the block. Welded the crank and cut it to spec. Three rods had to be resized. In the end it cost me 500 do get it all done. Not too bad. A bearing is not a moving part in a engine. That why they have those notches in them.The actually bearing is the film of oil. Hope i clarified it.

Re:What does spinning a bearing actually mean?
 

i spun two bearing and all others are bad, looks liek they were all polished ;D. coz 550 to rebuild and put new piston and rods in. BTW it`s been fucked for more than 7 months and it still rns fine. just add a quart of 20w-50 oil everyweek. oh well until it was hydro-locked. ;)

Re:What does spinning a bearing actually mean?
 

would I be better off just waiting for a running block? or getting this one with the spun bearing? It's gonna cost me $35 and a 4 hour drive. your opinions?

Re:What does spinning a bearing actually mean?
 

a new crank could be hard to find, what kind of block is it? I'm assuming d-series since you have forsaken the real power of b blocks.

Re:What does spinning a bearing actually mean?
 

it's a y8, i'm gonna try and find another, but this is what I've gotten so far.

Re:What does spinning a bearing actually mean?
 

just get it cut some

Re:What does spinning a bearing actually mean?
 

Look, pretty much any non running y8 is gonna usually have some type of bearing failure. Get the crank micropolished ($40) and get all new bearings (with the right specs after the crank MP)
I wouldn't get a whole new block or whatever unless the crank had major ---- wrong with it, but in most of the y8 cases I've seen, it doesn't even look like its been damaged. Definately salvageable. Go get that motor. IMO.

Re:What does spinning a bearing actually mean?
 

Just a comment about spun bearings... I knew a guy who rebuilt his V8 boat motor, and the bearing clearances were all pretty tight. He spun a bearing by running some heavy weight racing oil in it.. Probably a rare case but hey I guess it can happen ::)

Re:What does spinning a bearing actually mean?
 

And if you think about it, say theres a big nick in the crank. Get it micropolished. As long as there isn't a sharp edge to catch on, it would actually make for more room for oil between the crank and the bearing. I would think.

Re:What does spinning a bearing actually mean?
 

There is such a thing as too tight clearences.My two cents.

Re:What does spinning a bearing actually mean?
 

I was going to put a D16A1 crank in one of my browntop ZC's, but the main bearing ate up the crank journal and the block :-\...so I toss that away. maybe the crank will be usefull some other time ???

Re:What does spinning a bearing actually mean?
 

im building a d 20 stroker.

Re:What does spinning a bearing actually mean?
 

that's a hell of a stroke man

Re:What does spinning a bearing actually mean?
 

200mm stroke

Re:What does spinning a bearing actually mean?
 

true, but that will make your oil pressure ----, causing you to spin another bearing ;)

Re:What does spinning a bearing actually mean?
 

it means ur fucked

Re:What does spinning a bearing actually mean?
 

not gonna happen, no matter what you do. That's 110mm over stock, don't think so buddy. Would be a worthless motor anyway.

180mm is the max you can do, I measured ::)

with 44mm rods, they'll never break. :P

Re:What does spinning a bearing actually mean?
 

i think, that was a joke, i'm not posiive though

Re:What does spinning a bearing actually mean?
 

so listening to what everybody says,if your not mechanicaly able to tear apart this block and spend all that money tring to salvage what is ruined,it would be easier to buy another block and swap them out.its a d-block there pretty much easy to get. not like its a gsr,b16 or type-r block.those are the ones u try and rebuild.

Re:What does spinning a bearing actually mean?
 

yeah, just get a used block, if you don't know what you're doing and don't have time time to learn it.......