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jwbigbaddodge540hp 
Bronze Level
Joined: 28 Feb 2015
Location: melbourne AR
Points: 36
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 Topic: Connecting rod hardening
Posted: 04 Jan 2016 at 8:53pm |
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Who hardens connecting rods and what does it cost to have them done at what point do you need to have them harded, how much horse power and boost does it take to bend them?
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Zaddison
Silver Level
Joined: 19 Sep 2013
Location: Moweaqua il.
Points: 174
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Posted: 04 Jan 2016 at 10:59pm |
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Can't really tell you but the people who can will need to know what rods.
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Ken(MI)
Orange Level
Joined: 14 Sep 2009
Location: Lansing, MI
Points: 619
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Posted: 05 Jan 2016 at 6:09am |
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Heat treating an existing connecting rod is an exercise in futility, if you need heat treated rods, start from scratch and buy heat treated rods. Most tractor rods are not made of material that responds to strength enhancing heat treatment, meaning through hardening.
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bsallis180
Silver Level
Joined: 29 Jul 2013
Location: Pennsylvania
Points: 209
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Posted: 05 Jan 2016 at 1:02pm |
Assuming this is a diesel you are talking about? Having the connecting rods hardened is like insurance on your car. Better to have it then have something happen and then wish you did. Along with solid push rods! to my knowledge you can only have the "cracked" rods heat treated. For re-sizing purposes after they are hardened. Some one correct me if i am wrong? I would talked to Max Simpson at simpson performance
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mf440
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Joined: 04 Mar 2012
Points: 17
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Posted: 05 Jan 2016 at 8:38pm |
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I talked to Max about hardening rods and he sugested that billit rods would be a better option if you are planing on making HP
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200 allis
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Joined: 11 Mar 2014
Location: new jersey
Points: 203
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Posted: 05 Jan 2016 at 10:01pm |
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Max had hardened my rods for my 301. I had Bend one and slapped a sleeve. But that was from some other issues do to timing. Friend of mine uses rods out of 7000s series and runs timing and 4200 rpm and aren't hardened and he is running road gear.
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Larry W.
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Joined: 07 Nov 2010
Location: Luck, WI
Points: 282
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Posted: 05 Jan 2016 at 11:08pm |
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Anytime I work with anything much above stock hp, I have the rods hardened, cheap insurance. Billet rods are nice, but a good hardened OEM rod will take a lot of punishment, pretty well proven over the years with allis superstocks. Good rod bolts are a must on higher hp as well.
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jwbigbaddodge540hp
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Joined: 28 Feb 2015
Location: melbourne AR
Points: 36
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Posted: 06 Jan 2016 at 1:26am |
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thanks every one, this is for a 301 diesel engine I have a set of rods out of a 7010 Allis Chalmers that never sup a bearing and check out good, been magna flux for cracks, what does everyone do for rod bolts on here for there 301 talk to arp about them they don't have anything for the 301 Allis engines
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DrAllis
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Joined: 12 Sep 2009
Points: 22128
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Posted: 06 Jan 2016 at 4:22am |
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Just use new bolts from AGCO.
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