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Ecklers AutoMotive
Username Post: I spun a bearing in my 1970 impala 350        (Topic#353767)
Chevykrys 
Poster
Posts: 2

Reg: 11-04-18
11-04-18 06:21 PM - Post#2750468    

Can someone tell me what i need to do to fix or what is it that made it spun i had the crank checked nd stuff then replaced the bearings nd it started right back



 
Ecklers AutoMotive
Shepherd 
Frequent Contributor
Posts: 1600

Loc: Lake George, NY
Reg: 11-11-15
11-05-18 07:41 AM - Post#2750502    
    In response to Chevykrys

Welcome to CT. So you spun a rod bearing, no crank or rod damage? Usually this occurs with loss of oil pressure, overreving, general engine fatigue. No way to diagnose this accurately from here, onsite analysis is the only way.



 
Chevykrys 
Poster
Posts: 2

Reg: 11-04-18
11-05-18 01:58 PM - Post#2750531    
    In response to Shepherd

Thanks i had it checked ill just take it to someone else this time



 
GMMark 
Poster
Posts: 6

Reg: 11-23-18
12-15-18 05:38 AM - Post#2754560    
    In response to Chevykrys

Theres no way the crank WASNT damaged, who told you it wasn't?
Also the big end of the rod will need resizing.
When a rod bearing spins, its from lack of oil, it heats up, grabs the rod journal on the crank, then the bearing tangs tear off allowing the bearing to spin in the big end of the rod, eating it, and also chewing on the crank.




 
Shepherd 
Frequent Contributor
Posts: 1600

Loc: Lake George, NY
Reg: 11-11-15
12-15-18 05:49 PM - Post#2754621    
    In response to GMMark

Seconded!



 
56sedandelivery 
Dedicated Member
Posts: 5505
56sedandelivery
Age: 67
Loc: Everett, Wa.
Reg: 02-26-08
01-04-19 06:31 PM - Post#2756591    
    In response to Shepherd

MAIN or ROD bearing? There's a BIG difference on how to approach this. A main bearing may mean a different block (cheaper than having it line bored, if it even can be). Rods are cheaper, but still involve a complete tear-down, re-machining, and re-assembly. May be just cheaper to find another complete 350; unless it's a numbers matching car. But even then, these days, there are ways around that. There's really not a cheap way around this. I am Butch/56sedandelivery.




 
Ecklers AutoMotive
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