Anyone balancing engines....
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Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=185114
Printed Date: 23 May 2025 at 2:15am
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Topic: Anyone balancing engines....
Posted By: tbran
Subject: Anyone balancing engines....
Date Posted: 13 Dec 2021 at 11:23pm
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at overhaul? 8070 / 7080 higher Rpm engines? We have no idea if it pays - but the last two 426 engines we had balanced came back with an unbelievable amount of drilling and grinding, especially on pistons and rods. Speed shop said they had never worked on components that much out of balance.... ------------- When told "it's not the money,it's the principle", remember, it's always the money.. |
Replies:
Posted By: ryan(IN)
Date Posted: 14 Dec 2021 at 5:35am
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I believe they balanced our 7060 when we overhauled it. It’s the smoothest running 426 I’ve been around. ------------- ryan 1984 8070 FWA,1979 7060,1975 7040,1971 190,1960 D-17D,1957 D-14, 196? D-19G, 1975 5040,1971? 160,1994 R62 |
Posted By: DrAllis
Date Posted: 14 Dec 2021 at 5:51am
| Back in 1978 when I built a puller, the machine shop said the rods were the worst part of the imbalance on a 7030 engine. |
Posted By: PaulB
Date Posted: 14 Dec 2021 at 6:44am
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Of the smaller engines I've balanced, most flywheels where fairly close as well as the pistons. Many of the rods needed some work. As for the BE/CE crankshafts that I've done, not one needed much. I try to run my engines around 4500-5000. In over 40 years I've never had one self destruct as I've seen engines by other people do. I would not think about building an engine for increase performance without having it balanced to match all its new parts together.
------------- If it was fun to pull in LOW gear, I could have a John Deere. Real pullers don't have speed limits. If you can't make it GO... make it SHINY |
Posted By: CrestonM
Date Posted: 14 Dec 2021 at 11:41am
| I’m of no help but I have a 7080, so I’m curious…does taking material off the rods during balancing decrease the strength of them? |
Posted By: injpumpEd
Date Posted: 14 Dec 2021 at 12:32pm
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Connecting rods have what are called balancing pads, the square area on top and bottom that you remove material from. You would not remove material from the beam other than smoothing the casting flash and polishing the beam. ------------- 210 "too hot to farm" puller, part of the "insane pumpkin posse". Owner of Guenther Heritage Diesel, specializing in fuel injection systems on heritage era tractors. stock rebuilds to all out pullers! |
Posted By: HudCo
Date Posted: 14 Dec 2021 at 4:07pm
| new engines these days with new technogy in the machineing the componants very very close now that balancing ang blueprinting is almost a thing of the past, forthy year old stuff would be differant |
Posted By: DougG
Date Posted: 14 Dec 2021 at 4:36pm
| How much would it cost to balance an Allis 426? Guesstimate or ballpark figure, just curious,, also what do you call that when you add weight to the crank? Always Heard for more low end torque? |
Posted By: tbran
Date Posted: 14 Dec 2021 at 7:38pm
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last one was $100/cyl. Ass to adding weight to crank - the only thing I have ever seen is drilling a hole in the crank throw and installing a plug of heavy metal to make it balance. Mostly on V8 cranks. ------------- When told "it's not the money,it's the principle", remember, it's always the money.. |
Posted By: DougG
Date Posted: 14 Dec 2021 at 7:43pm
| Seems cheap enough then to have one balenced,, |
Posted By: DonDittmar
Date Posted: 15 Dec 2021 at 6:33am
Wasnt there a guy on here did some external balancing...........went by Pankey or something.......... ------------- Experience is a fancy name for past mistakes. "Great moments are born from great opportunity" 1968 D15D,1962 D19D Also 1965 Cub Loboy and 1958 JD 720 Diesel Pony Start |
Posted By: ryan(IN)
Date Posted: 15 Dec 2021 at 7:42am
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There’s a name I haven’t heard in a long time. ------------- ryan 1984 8070 FWA,1979 7060,1975 7040,1971 190,1960 D-17D,1957 D-14, 196? D-19G, 1975 5040,1971? 160,1994 R62 |
Posted By: Allis dave
Date Posted: 15 Dec 2021 at 9:05am
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I had my WD45 balanced when rebuilt a few years ago. Was around $400. It runs smooth, but probably wasn't necessary. They removed quite a bit of material. I was at a Farm stock fun pull once and was idling on the track, and I heard the flagger mutter to himself, that thing runs like a sewing machine.
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Posted By: DonDittmar
Date Posted: 15 Dec 2021 at 5:10pm
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Man I thought I would have gotten a bigger reaction out of my pankey comment ***taps mic*** “is this thing on” 😂😂😂
------------- Experience is a fancy name for past mistakes. "Great moments are born from great opportunity" 1968 D15D,1962 D19D Also 1965 Cub Loboy and 1958 JD 720 Diesel Pony Start |
Posted By: allisbred
Date Posted: 15 Dec 2021 at 5:21pm
I bought a wd-45 a couple of years ago with aftermarket pistons and fresh rebuild. Going down the road, motor has a harmonic imbalance with no load. It’s now on my list to drop the pan and check brg’s. Many have been rebuilt without balancing, may last for a while. Then again, it may not. |
Allis dave wrote:Posted By: cwhit
Date Posted: 15 Dec 2021 at 5:57pm
| Don, I,m laughing with you. |
Posted By: steve(ill)
Date Posted: 15 Dec 2021 at 8:36pm
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YEP... that WAS FUNNY..... have not heard him for YEARS ! ------------- Like them all, but love the "B"s. |
Posted By: HudCo
Date Posted: 15 Dec 2021 at 11:11pm
| thats been awhile |
Posted By: HudCo
Date Posted: 15 Dec 2021 at 11:11pm
| thats been awhile |
Posted By: WF owner
Date Posted: 16 Dec 2021 at 7:00am
Sounds like a nightmare no one wants to relive ! I saw some posts of his recently on one of the Facebook AC sites. He is still giving out advice.
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Posted By: DougG
Date Posted: 19 Dec 2021 at 8:59am
| I think it was on here rumor was at Harvey when the rods came off the line they were just thrown in a basket, wouldn't think that's a good practice for critical internal engine components! What brand pistons and bearings did AC use ? Just curious |
Posted By: ACjack
Date Posted: 19 Dec 2021 at 9:37am
They were not just thrown in a basket. The finished rods where sorted into four groups by their weight and placed into a steel tub using dividers and a rust inhibiter between the layers. This was for all part numbers. They used several suppliers for pistons, rings and cylinder sleeves. Two that come to mind where Bonalite (spelling?) and sealed power. Some time around the 70's they started to use components from Japan. For the main and rod bearings I recall they used Clevlite brand.
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Posted By: DougG
Date Posted: 19 Dec 2021 at 9:57am
| I gottcha, thanks for the reply ACJack- was hoping you would reply as you were right there ! Was just something Ive heard/ rumor about the rods ; |