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Would You Use This Crank?

  • Thread starter Thread starter Rschmid
  • Start date Start date Jan 27, 2020
R

Rschmid

Member
Nov 28, 2018
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Phoenix
Jan 27, 2020
#1
  • Jan 27, 2020
  • #1
I am building a 3V stroker and the kit arrived last week. The crankshaft is a disappointment to say the least. No specs or paperwork of any kind came with the part. The was some very light corrosion and/or residue on most of the journals. Lastly, as a result of balancing there were six deep holes in the front counterweight (two of which were filled???) and 4 deep holes in the rear. The crank is cast steel, so not super expensive compared to a forged one, but this isn't what I was expecting.

Is this par for the course or did I get hosed?......pics attached
 

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2Blue2

will be trying this sex one when I can find it
Mod Dude
Mar 5, 2019
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Oahu
Jan 27, 2020
#2
  • Jan 27, 2020
  • #2
Rschmid said:
(two of which were filled???)
Click to expand...

Most likely filled with Mallory, a heavy metal used in balancing cranks.
But journals are not the prettiest I've seen.

I cant tell much from pics .
Get a second opinion from another machinist before doing anything else.
 
Reactions: Adieu

RC Sanders

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Jan 27, 2020
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MN
Jan 27, 2020
#3
  • Jan 27, 2020
  • #3
I've never done a rebuild, but I'd have another shop check the balance and see what they think of the fillings (like 2Blue2 said).
 
R

Rschmid

Member
Nov 28, 2018
14
3
13
Phoenix
Jan 28, 2020
#4
  • Jan 28, 2020
  • #4
So the machinist said the journals have some superficial damage from the balancing. Getting the crank dunked and journals polished. I will probably have them check the balance just to be on the safe side. Thanks for the feedback
 
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