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block journals?

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Old Aug 5, 2007 | 09:34 PM
  #1  
alpine247's Avatar
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From: NC johnston co
Car: 1988 IROC-Z
Engine: 350 TPI
Transmission: 700r4
Axle/Gears: 2.77 posi stock
block journals?

ok the engine spun a rod bearing, will that hurt the block journals any? i dont think so but my dads best friend is telling me to have the engine block check.but thats more money i can put in the engine instead at a shop that probably just look at it.
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Old Aug 5, 2007 | 11:05 PM
  #2  
five7kid's Avatar
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Did the bearing shells actually "spin" within the rod? Or did the crank journal and bearing shells just get a little too intimate?

The biggest issue is what you sent through the oil passages. At the very least, the engine should be completely disassembled and thoroughly cleaned.
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Old Aug 5, 2007 | 11:46 PM
  #3  
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From: Calgary, AB, Canada
Car: 1982 Trans-Am
Engine: 355 w/ ported 416s
Transmission: T10, hurst shifter
Axle/Gears: 10 bolt, true-trac, 3.73
Re: block journals?

Look for bluing that means it was warped from heat. That's a sure fire way to know that you need it line honed.
It spun a ROD bearing, and you're asking about the BLOCK journals. Just making sure we're on the same page. If you're replacing the rods anyway, i'd just check to make sure none of your crank MAIN journals spun. If not I think the bearing caps for the mains should be fine.
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Old Aug 6, 2007 | 10:53 AM
  #4  
five7kid's Avatar
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Actually "spinning" a rod bearing (or main bearing) is very rare. What most people call "spun" is actually "wiped" - in other words, failure to properly lubricate so that the bearing insert and crank journal make metal-to-metal contact.

Both produce metallic particles that will circulate throughout the engine but one does more collateral damage (the "bluing" you mentioned) than the other.
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Old Aug 6, 2007 | 01:13 PM
  #5  
alpine247's Avatar
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Joined: Jun 2006
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From: NC johnston co
Car: 1988 IROC-Z
Engine: 350 TPI
Transmission: 700r4
Axle/Gears: 2.77 posi stock
Re: block journals?

well i bought the car knocking for 450,but yeah it just spun a rod bearing on #8.

i got the engine tore down to the block,i pressure wash it,then dry it with air,then oil it.

im getting a new crank and a new rod should come in today.

i think some pic in a few..
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