AC 170-175-180-185
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=167067
Printed Date: 15 Nov 2024 at 5:20pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: AC 170-175-180-185
Posted By: WNYBill
Subject: AC 170-175-180-185
Date Posted: 01 Jan 2020 at 11:03am
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Do I have this right? The 175 in just a newer version of the 170 and the 185 is just a newer version of the 180. What are the real life differences and which is a better tractor?
Bill
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Replies:
Posted By: tbran
Date Posted: 01 Jan 2020 at 1:06pm
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you can search the archives here, but engine rpm, trans and torque housing gears, final drives have some different parts, 236 vs 248 perkins engines are some differences. The tractors are 90% the same. 170 and 175 and 180 185 built in overlapping years. Visit http://www.agcopartsbooks.com" rel="nofollow - www.agcopartsbooks.com and start comparing.
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When told "it's not the money,it's the principle", remember, it's always the money..
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Posted By: injpumpEd
Date Posted: 01 Jan 2020 at 1:08pm
Yes, the "5" tractors were simply sped up versions of the "0" tractors. For instance, the rated load rpm of a 180 is 2000, and 64 pto hp, the 185 is rated at 2200 and develops 74 pto hp, while fuel setting is only slightly higher. The marketing strategy was to pull the same smaller equipment faster than the previous tractor you used, thus saving drivetrains. As speed increases, the torque falls, torque is what does the work, but also damage. By the time these tractors came out, a 75hp tractor was no longer the big horse anymore either, in many cases.
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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!
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Posted By: tbran
Date Posted: 02 Jan 2020 at 8:58am
hey Ed, what is difference in timing advance ability between the pumps with and without the trimmer screw in the bottom.
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When told "it's not the money,it's the principle", remember, it's always the money..
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Posted By: injpumpEd
Date Posted: 02 Jan 2020 at 10:19am
Without digging spec sheets out, ones without advance are the same whether 180 or 185, the ones with advance are same as each other as well going odd memory. It seems they have 5* pump advance.
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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!
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Posted By: DrAllis
Date Posted: 02 Jan 2020 at 10:23am
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I seem to remember 24 degrees BTDC on the old non-advance engines and 18 degrees BTDC on the later models ??
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Posted By: injpumpEd
Date Posted: 02 Jan 2020 at 10:32am
26* on non advance, 180 w/advance is 22*, 185 with advance is 24* according to a sheet I have for all sorts of AC applications. They would probably start better at 18* lol! The 200 tractor underwent many changes, first pumps were 5* and timed at 24*, then went to 8* pump advance to time engine to 18* for better starting.
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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!
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Posted By: Steve in NJ
Date Posted: 02 Jan 2020 at 12:25pm
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From a wiring point of view, there are some minor differences at the dash and going out to the engines looking at a couple OEM harnesses that I have here. Not sure on the rear lighting harnesses. Never could get a rear harness that wasn't cobbled up! LOL! Steve@B&B
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39'RC, 43'WC, 48'B, 49'G, 50'WF, 65 Big 10, 67'B-110, 75'716H, 2-620's, & a Motorhead wife
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