Farm Equipment - 6080 rebuild????

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6080 rebuild????

Printed From: Unofficial Allis
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=193340
Printed Date: 13 Sep 2025 at 8:50am
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Topic: 6080 rebuild????

Posted By: Mikez
Subject: 6080 rebuild????
Date Posted: 06 Feb 2023 at 9:54pm

Hello everyone

I have a 6080 that we will be having the engine rebuilt. Have a few questions. I have been trying to acquire parts. Have agco engine kit 79015762. The throw out bearings, pilot bearing, new radiator hoses. I will be ordering clutch this week. Who has the better clutch. Should we get new turbo and who caries them. The pump and injectors will go to Ed for rebuilding.

One big question is main bearings. Or thrust bearing. Over the years of this forum I think iv read. This engine kit i have or agco bearings will be the newer updated heavier thrust bearing. And my tractor will have the older smaller thrust bearing. I thought I read here that if crank is takin out you can do something to block to except the bigger thrust bearing. Is that correct and what has to be done.

History of it. It’s a 84 2wd, unknown total hours of tractor. But signs of being a lot. Has the front thrust bearing kit on front. Iv owned for 13 years and had a good oil change regiment and hasn’t really burned any oil tell just this past fall. But for past 5 years the blow by has gotten worse. It’s like pure exhaust coming out breather hose. It actually starts good and runs pretty smooth.

Am I missing anything

Sorry for such a long post.

Thanks for your help

Replies:

Posted By: injpumpEd
Date Posted: 07 Feb 2023 at 7:08am

I can also provide a turbo.

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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: Mikez
Date Posted: 08 Feb 2023 at 8:28am

Thanks Ed

Posted By: Ron(AB)
Date Posted: 08 Feb 2023 at 1:49pm

How about doing the rad too?

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405, 7000, 7050, 8050, 8070, L3, 2300 & 2600 disk

Posted By: Mikez
Date Posted: 08 Feb 2023 at 7:29pm

Oh yea I did have that in mind too. Thanks.

Another question. Iv read on here front plate dowels coming loose. This motor doesn’t have any oil leaks in front plate or cover.

Posted By: SteveM C/IL
Date Posted: 08 Feb 2023 at 8:08pm

Don't think there's a problem with dowel pins if it has no loader. That's where the trouble begins.

Posted By: Mikez
Date Posted: 11 Feb 2023 at 10:54pm

Figured I’d ask. Thanks.

Posted By: Dkienzle
Date Posted: 12 Feb 2023 at 9:28am

If you haven't already, I'd put a gear reduction starter on it while your this deep into it. Really makes a difference on those tractors.

Posted By: victoryallis
Date Posted: 12 Feb 2023 at 11:20am

16:1 kit is a must my last one came from Agco.

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8030 and 8050MFWD, 7580, 3 6080's, 160, 7060, 175, heirloom D17, Deere 8760

Posted By: tbran
Date Posted: 12 Feb 2023 at 1:20pm

The block will have a ridge on the upper side of the thrust brg saddle. It can be filed down easily . The main cap will be fine. It will still need the thrust kit on the front as the crank will not have the thrust area needed even with the new wide thrust flange brg.

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When told "it's not the money,it's the principle", remember, it's always the money..

Posted By: Mikez
Date Posted: 13 Feb 2023 at 11:16pm

Thank you tbran

Posted By: Mikez
Date Posted: 08 Apr 2023 at 3:07pm

I forgot to say.

This tractor has been hard to get into gear. Didn’t see anything obvious when he took apart. Is there a common thing to look for.

Found cracked ring in #4 cylinder. See why she had so much blow by.

He was able to do like tbran said with thrust bearing. So that’s good.

Thanks

Posted By: AC720Man
Date Posted: 08 Apr 2023 at 7:12pm

Mike is it grinding when trying to get it in gear? Could be just clutch adjustment needed.

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1968 B-208, 1976 720 (2 of them)Danco brush hog, single bottom plow,52" snow thrower, belly mower,rear tine tiller, rear blade, front blade, 57"sickle bar,1983 917 hydro, 1968 7hp sno-bee, 1968 190XTD

Posted By: Mikez
Date Posted: 18 Apr 2023 at 8:59pm

I thought we had tried adjusting it.

Hycapacity suggested adjusting the fingers on clutch. To give it a little more.

And for adjusting the pedal. Mine is cut off with a handle bolted to it.

Posted By: Mikez
Date Posted: 18 Apr 2023 at 9:22pm

The guy that’s doing engine called tonight. He Noticed in service book. A note regarding the balancer bearings. If engine is over certain hours and is being rebuilt the balancer bearings should be serviced.

I don’t have book in front of me for exact wording.

But just wondering if any comments on this nowadays.