crank trashed, help/advice please
Laughing Gas
Joined: Nov 2002
Posts: 1,198
Likes: 9
From: Fairmont
Hello Paul!!
I have not visited FTE, or maybe I have not read all the threads.
I am very sorry to hear about your engine issues.
I have not seen a picture of the crankshaft you had, I don't know if I am late to the party here and just missed it somewhere.
I have not seen a crankshaft fail yet. I have seen spun bearings, severely grooved up journals, worn out thrusts. But those are faults of the crankshaft.
An OE crankshaft really will handle a lot.
I have not visited FTE, or maybe I have not read all the threads.
I am very sorry to hear about your engine issues.
I have not seen a picture of the crankshaft you had, I don't know if I am late to the party here and just missed it somewhere.
I have not seen a crankshaft fail yet. I have seen spun bearings, severely grooved up journals, worn out thrusts. But those are faults of the crankshaft.
An OE crankshaft really will handle a lot.
Laughing Gas
Joined: Jan 2006
Posts: 883
Likes: 7
From: New-brunswick,Canada
You ask for a new crank and i found this:Ford 6.6 400 71-82 Crankshaft Crank Kit: eBay Motors (item 380116223666 end time Aug-01-10 07:09:15 PDT)
Thread Starter
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Senior User
Joined: Nov 2005
Posts: 429
Likes: 0
wow,
You ask for a new crank and i found this:Ford 6.6 400 71-82 Crankshaft Crank Kit: eBay Motors (item 380116223666 end time Aug-01-10 07:09:15 PDT)
Senior User
Joined: Feb 2009
Posts: 308
Likes: 0
From: Southern NM
What did the sister rod on that throw sustain for damage?I guess I wonder what the bearing in that rod looked like.Was there an oiling issue at that journal,or was it a single (isolated)rod bearing failure?And I guess like others here,what about the main feeding it.Anxious to see the pictures of the failure.And for the record,crankshafts can and do fail without the help of lube problems or bearing failures.Have seen many crankshafts fail in heavy engines due to bending or rotating bending fatigue.Usually attributed to someone straightening a bent crank.And they almost always break at the rod fillet behind the counterweight.Another spot they fail at is the oil feed hole on the rod journal.This engine should be an interesting failure analysis when it is determined what happened where.I also should have mentioned that any cast,forged,or foundered part can have internal flaws such as inclusions(pipe),voids,or irregular grains.
Senior User
Joined: Feb 2009
Posts: 308
Likes: 0
From: Southern NM
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Senior User
Joined: Apr 2004
Posts: 259
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From: Eastern Ohio
I own Graham Offroad. We use 400s because of their stroke. Cheap, stock bottom ends properly prepared. We use TMI parts and beat them to death in mud trucks, hill climbers, and rock crawlers. Never trashed a crank, but if we do, will buy a regrind from TMI. It's the only cost effective way to go.
lol.
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