Is this crank new?
Thread Starter
Instructor
Joined: Mar 2002
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From: Allen TX
Is this crank new? (pics included beware)
This is the first time I bought a crankshaft (big block). Mains measure about 2.748 +-0.002, as far as I can tell with my $10 calipers. Does this measurement and pics seem like the crank is new to you?
Outside of the part number, is there anyway to verify when the crank was produced?
Thanks,
John
Outside of the part number, is there anyway to verify when the crank was produced?
Thanks,
John
Last edited by John W; Oct 12, 2004 at 08:24 PM. Reason: add warning about size
Thread Starter
Instructor
Joined: Mar 2002
Posts: 181
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From: Allen TX
Yeah looked odd to me...
The crank is supposedly NOS (how old, who knows), its the new part that I am really concerned with. The crank is supposedly nitrided (hence the dark color). The "marks" on the snout looked kinda suspect, but I suppose those could have been caused when balanced (internal balanced crank), you can't feel them and the dimensions seem to check out. I have never seen a "new" crank before, do these things seem normal?
Thanks,
John
Thanks,
John
Race Director
Joined: Apr 2000
Posts: 17,676
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From: Who says "Nothing is impossible" ? I've been doing nothing for years.
The journals look new but might have been polished I can see marks on the crank snout I would not associate with a new crank. You cannot get an accurate measurement with calipers ( I have digital calipers and will not use them for crank measurements ) Get a 2-3in. mic that is graduated in 10 thousands of an inch, not 1 thous or take it to a machine shop 
Race Director
Joined: Dec 1999
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from the looks of it it's certainly not new, a crank gear has been installed and it has run from the looks of the journals. If it mics out fine and magnafluxes okay I would not pay more for it than any other used crank.
Thread Starter
Instructor
Joined: Mar 2002
Posts: 181
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From: Allen TX
What are you seeing in the journals that makes it look "used"? Some of the strange coloration visible is reflections from the surroundings onto the journals. The snout definitely got my attention, but it is not marked from the oustide in to the first keyway like a balancer was installed. Could the marks on the snout be from factory balancing?
John
John
Racer
Joined: May 1999
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From: Marietta, GA
Just sold a new never installed 454 steel crank on ebay.
All the quality control marks should be visible, no marks on the snout at all.
http://cgi.ebay.com/ebaymotors/ws/eB...tem=7924353355
All the quality control marks should be visible, no marks on the snout at all.
http://cgi.ebay.com/ebaymotors/ws/eB...tem=7924353355
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Team Owner
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From: eville in
Originally Posted by noelga
Just sold a new never installed 454 steel crank on ebay.
All the quality control marks should be visible, no marks on the snout at all.
http://cgi.ebay.com/ebaymotors/ws/eB...tem=7924353355
All the quality control marks should be visible, no marks on the snout at all.
http://cgi.ebay.com/ebaymotors/ws/eB...tem=7924353355
