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Log inSpun rods/mains?
Spun rods/mains?
dirtbogger on February 9th 2010, 10:18 am
I picked up a d1 block 460 and found when I tore it down it had spun # 1-5 rods and # 1 main. Any thoughts on why it was confined to this area? All the others looked good! Thanks! 
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Re: Spun rods/mains?
dfree383 on February 9th 2010, 11:21 am
Lucky maybe? Clearances? Would have to see them to make any real guess why.
Are they "Spun" or just wiped / scuffed?
Are they "Spun" or just wiped / scuffed?
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Re: Spun rods/mains?
dirtbogger on February 9th 2010, 12:30 pm
They spun, ruined the crank,rods and block in these journals. Threw it on the scrap trailer. I was just going to put it in my future use corner, but have others so I didn't want to mix it up with good parts. I don't know anything about it other than the guy that gave it to me said it started knocking. Just wandered about oil to this area, because it had a lot of crap in the screen, plastic from the timing gears. Would oil starvation target these journals first? Just trying to learn something! Thanks!
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Re: Spun rods/mains?
dfree383 on February 9th 2010, 12:34 pm
Yes Could be. Any Pics?
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Re: Spun rods/mains?
jones on February 9th 2010, 1:55 pm
Did the rods turn a different color on the journals that spun?
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Re: Spun rods/mains?
dirtbogger on February 9th 2010, 9:06 pm
Yes, they got hot!! Sorry I don't have any pics. Guy said he was driving down the interstate and it started knocking! It was still full of oil when I tore it down!
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Re: Spun rods/mains?
bbf-falcon on February 10th 2010, 9:02 am
Kinda sounds pretty simple. Probably lots of miles,wornout parts,Low oil pressure from worn out pump,plugged screen. bearings starved for oil,got hot,galded to crank and spun. probably had a idiot light ,no mech. guage and light didn't show low oil pressure. 
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Re: Spun rods/mains?
BigDave65 on February 13th 2010, 8:39 pm
I tore down a mid-70's block to get a crankshaft out of it to have stroked and it had 1 rod on one of the middle throws, that not only had spun a bearing, it had eaten into the crank about a 1/4". The mating side of the journal looked fine. I'm sure all the metal was eating the bearing though. That was one of the oddest things I have seen.
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