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.