Pulling Forum - Connecting rod hardening

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Connecting rod hardening

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Category: Other Topics
Forum Name: Pulling Forum
Forum Description: Forum dedicated to Tractor and Garden Pulling
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=117102
Printed Date: 25 Nov 2024 at 10:46am
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Topic: Connecting rod hardening

Posted By: jwbigbaddodge540hp
Subject: Connecting rod hardening
Date Posted: 04 Jan 2016 at 8:53pm

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?

Replies:

Posted By: Zaddison
Date Posted: 04 Jan 2016 at 10:59pm

Can't really tell you but the people who can will need to know what rods.

Posted By: Ken(MI)
Date Posted: 05 Jan 2016 at 6:09am

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.

Posted By: bsallis180
Date 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

Posted By: mf440
Date Posted: 05 Jan 2016 at 8:38pm

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

Posted By: 200 allis
Date Posted: 05 Jan 2016 at 10:01pm

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.

Posted By: Larry W.
Date Posted: 05 Jan 2016 at 11:08pm

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.

Posted By: jwbigbaddodge540hp
Date Posted: 06 Jan 2016 at 1:26am

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

Posted By: DrAllis
Date Posted: 06 Jan 2016 at 4:22am

Just use new bolts from AGCO.