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Parts for a 844 ci engine ???
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DougG View Drop Down
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Joined: 20 Sep 2009
Location: Mo
Points: 8370 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DougG Quote  Post ReplyReply Direct Link To This Post Topic: Parts for a 844 ci engine ???
    Posted: 24 Mar 2011 at 5:35pm
What parts are still avaliable for these engines ? I seen you can get overhaul kits ; what about cranks etc ? Got a new project brewing ;

Edited by DougG - 25 Mar 2011 at 11:34am
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gemdozer View Drop Down
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Joined: 17 Sep 2009
Points: 1072 		Post Options Post Options   Thanks (0) Thanks(0)   Quote gemdozer Quote  Post ReplyReply Direct Link To This Post Posted: 24 Mar 2011 at 6:16pm
I have some used 844 parts but no more crankshaft.
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big al View Drop Down
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Joined: 15 Apr 2010
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Points: 160 		Post Options Post Options   Thanks (0) Thanks(0)   Quote big al Quote  Post ReplyReply Direct Link To This Post Posted: 24 Mar 2011 at 10:21pm
i am rebuiding one as we speek,you might be able to get a new crank from fiat,the last time i heard about $4500.00
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Bob D. (La) View Drop Down
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Joined: 12 Sep 2009
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Points: 25529 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Bob D. (La) Quote  Post ReplyReply Direct Link To This Post Posted: 25 Mar 2011 at 5:43am
Reported
When you find yourself in a hole,PUT DOWN THE SHOVEL!!!
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scott View Drop Down
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Joined: 12 Sep 2009
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Points: 2755 		Post Options Post Options   Thanks (0) Thanks(0)   Quote scott Quote  Post ReplyReply Direct Link To This Post Posted: 25 Mar 2011 at 6:26am
Would an 844 bolt in where a 426 had sat?
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DougG View Drop Down
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Points: 8370 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DougG Quote  Post ReplyReply Direct Link To This Post Posted: 25 Mar 2011 at 11:26am
I have found out the old BIG AL engines had a counterweighted crank ;thats the one that broke ; then AC put out a new version in about   1975  ; anyone know the differences ? I believe I could have one made for $4500 ; also anyone know if the BIG AL version is different than the engine for scrapers and crawlers ?

Edited by DougG - 25 Mar 2011 at 11:34am
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big al View Drop Down
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Points: 160 		Post Options Post Options   Thanks (0) Thanks(0)   Quote big al Quote  Post ReplyReply Direct Link To This Post Posted: 25 Mar 2011 at 11:55pm
the cranks broke off at the front snout do to prolonged tortional vibrations.allis tried to correct this by drilling the crank to accept a long dampner bolt to keep the nose of the crank in compression.then they induction hardened the nose,then they went to a 6 counter weight crank(instead of 12) to lighten the rotating mass,finally they went to a snub nose as used in the 6138.all the above improvements have differant part #s.note: cummins also had this problem (335)and went to the snub nose.
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