identify this engine and pump
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=208938
Printed Date: 25 Jan 2026 at 9:25am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: identify this engine and pump
Posted By: HudCo
Subject: identify this engine and pump
Date Posted: 16 Nov 2025 at 4:00pm
 i picked up this engine and pump with some other parts pump dosnt fit that engine , what is the engine and what is the tank on it ? also it has a oliver looking color green paint that is under the orange. will this fit in my c ? was this some military spec. engine 
|
Replies:
Posted By: HudCo
Date Posted: 16 Nov 2025 at 4:13pm
 
|
Posted By: DrAllis
Date Posted: 16 Nov 2025 at 4:35pm
| There should be a s/n stamped on the engine behind the carb or on the left bell housing flange lip. The engine looks to me like a G-138 or G-149 to a D-10 or D-12. The Barnes pump has a diesel p/n on it. So, maybe a WD-45 or D-15 diesel ? The square drives shaft looks like an old Detroit diesel engine, but the p/n is clearly Allis-Chalmers. |
Posted By: Tracy Martin TN
Date Posted: 16 Nov 2025 at 6:07pm
|
Very early series 1 D10-12 engine.Is it for sale? Thanks, Tracy ------------- No greater gift than healthy grandkids! |
Posted By: HudCo
Date Posted: 16 Nov 2025 at 6:57pm
| that pump does have kind of a detriot color on the other side |
Posted By: HudCo
Date Posted: 16 Nov 2025 at 8:17pm
 oil tank and the bottom coat of green paint it must have been some kind of industrail thing looking on the internet i cannot find a picture of a pump under the distributor houseing on any d 10 or d12 but looks like there was a pump mounted their
|
Posted By: DrAllis
Date Posted: 16 Nov 2025 at 9:22pm
| The Detroit pump ( if that's what it is) certainly could have been because A-C used Detroit engines in construction equipment up until 1953. The green paint is confusing tho...... |
Posted By: HudCo
Date Posted: 16 Nov 2025 at 10:44pm
| just looked up the parts on the oil tank was used on the industrail tractors and ethier power steering pump or auxillery hydralic pump |
Posted By: Les Kerf
Date Posted: 17 Nov 2025 at 7:36am
|
Some lame observations: That large-looking coil seems to be somewhat more robust than the oil filter that it got shoved into. The pulley on the generator appears to be nearly the same diameter as the crankshaft pulley, which would result in a relatively slow RPM on the generator. The generator itself seems somewhat large as well (unless the photo perspective is confusing me). Is there any possibility that this could have been a 24 Volt system?
|
Posted By: DrAllis
Date Posted: 17 Nov 2025 at 8:07am
| D-10/ 5308 serial number should make the engine a G-149 cubic inch power plant. G-138 cubic inch was prior to D-10/ 3501. |
Posted By: HudCo
Date Posted: 17 Nov 2025 at 9:25am
| what is the dash backwards 2 or5 on the end of the serial number ? will this fit in a B or a C ? i bet this was one of those backwards tractor forklifts |
Posted By: Calvin Schmidt
Date Posted: 17 Nov 2025 at 9:40am
|
The serial number is 10- xxxx not D-10, This makes it a 138 engine. The tank when the engine was installed in a tractor was used for the non draft sensitive live hydraulics. ------------- Nothing is impossible if it is properly financed |
Posted By: DrAllis
Date Posted: 17 Nov 2025 at 10:07am
| If that stamped number (5308) is the chassis serial number, effective 10-3501 was the start of the G-149 engine. So, unless there's something I don't unnerstan, 5308 is newer than 3501. |
Posted By: DMiller
Date Posted: 17 Nov 2025 at 10:19am
| Pump appears a Fuel Transfer pump off a DD, 71 series. Changed many. |
Posted By: HudCo
Date Posted: 17 Nov 2025 at 1:16pm
| tonight i will measure the bore and stroke the was allready off it but i do have the pan |
Posted By: DrAllis
Date Posted: 17 Nov 2025 at 3:01pm
| Stroke is the same 138-149-160. The bore is different between all three. |
Posted By: HudCo
Date Posted: 17 Nov 2025 at 6:12pm
| 3.50 bore , now will this bolt in my c |
Posted By: steve(ill)
Date Posted: 17 Nov 2025 at 6:29pm
|
will it fit... YES https://www.allischalmers.com/forum/138-ci-engine_topic139643.html" rel="nofollow - https://www.allischalmers.com/forum/138-ci-engine_topic139643.html  ------------- Like them all, but love the "B"s. |
Posted By: Calvin Schmidt
Date Posted: 19 Nov 2025 at 8:43pm
|
The stamp is on the engine flange. 10-xxxx is a 138 12-xxxx is a 149 14-xxxx is a 160 My early D-12 has the 10-xxxx in the engine and next to it on the torque tube is D-12 1886 . This is an all original D-12 including the tires
------------- Nothing is impossible if it is properly financed |
Posted By: HudCo
Date Posted: 20 Nov 2025 at 9:55am
| i think i am going to turn it in to a 160 when i start going throught it , i think i just need a set of rods to make the change for the piston pins |
Posted By: DrAllis
Date Posted: 20 Nov 2025 at 11:45am
|
Block sleeve bores are bigger diameter on the G-160. |
Posted By: HudCo
Date Posted: 20 Nov 2025 at 11:58am
| well dangit could always do the counter bores if their is enought meat in the block. but a jump from a used 125 to a fresh 149 wuold be plenty as it does is chores just fine now how many differant valve sizes through the engine changes? did see some rpm changes |
Posted By: PaulB
Date Posted: 20 Nov 2025 at 1:50pm
|
The same vale train kit works for everything from the 116-BE engine all the way up to the G-160. Now you can put bigger valves in the head if desired. ------------- 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: SteveMaskey(MO)
Date Posted: 22 Nov 2025 at 10:12pm
| My I400 backhoe has a tank like that for the power steering |
Posted By: Alex09(WI)
Date Posted: 24 Nov 2025 at 7:09pm
I bit more info to add and correct, additional info welcome! Decoding engine serial # on 'smallblock' power crater gas engines 10-xxxx = 138ci 12-xxxx = 149ci setup w/bypass oil in newer 234353 "dual use" block * 149-xxxx = 149ci setup w/bypass oil in old 227541 block 15-xxxx = 149ci setup w/full flow oil in newer 234353 "dual use" block * 160-xxxx = 160ci 3-xxxx = 149ci in h3 crawler H-xxxx = 160ci in h3 crawler * 234353 "Dual Use" engine blocks were backwards compatible and could be used with both bypass style and full flow oil pressure systems because they had the ports, passages and plugs for both styles. ------------- www.awtractor.com A&W TRACTOR 920-598-1287 KEEPING ALLIS-CHALMERS IN THE FIELDS THROUGH THE 21ST CENTURY |
Calvin Schmidt wrote:Posted By: HudCo
Date Posted: 24 Nov 2025 at 8:13pm
| so mine would realy be 138 with bigger pistons makeing 149cu in with bypass lube system , so what would it take to turn it to full flow |
Posted By: PaulB
Date Posted: 25 Nov 2025 at 8:24am
|
For anyone looking I have a NOS G-160 bare block available. ------------- 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 |