720 Diesel
Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Garden Tractors
Forum Description: A great place to discuss the Simplicity and Allis Chalmers Garden Models
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=157822
Printed Date: 07 May 2024 at 5:41pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: 720 Diesel
Posted By: den/southern illinoi
Subject: 720 Diesel
Date Posted: 02 Feb 2019 at 7:53pm
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Happened upon a Kubota T 1600 garden tractor that ran good for a reasonable price. Bought it to install the engine in one of my 720's. We've been working on it for about a month a day or maybe 2 each week. Got to run it yesterday and got to drive it today. Engine is a 14 1/2 hp engine. A few little tweaks and some work on the paint and it will be ready for show season. Den Here's some pictures http://s118.photobucket.com/user/dennisstork/media/allis%20g%202019/720%20diesel/IMG_6550_zpsn99csl4u.jpg.html" rel="nofollow">  http://s118.photobucket.com/user/dennisstork/media/allis%20g%202019/720%20diesel/IMG_6549_zpsztpnlvgu.jpg.html" rel="nofollow">  The dash remade http://s118.photobucket.com/user/dennisstork/media/allis%20g%202019/720%20diesel/IMG_6551_zpshtmd3ve9.jpg.html" rel="nofollow">  http://s118.photobucket.com/user/dennisstork/media/allis%20g%202019/720%20diesel/IMG_6552_zpszaw3ippy.jpg.html" rel="nofollow">  http://s118.photobucket.com/user/dennisstork/media/allis%20g%202019/720%20diesel/IMG_6553_zpsnis3qfvc.jpg.html" rel="nofollow">  http://s118.photobucket.com/user/dennisstork/media/allis%20g%202019/720%20diesel/IMG_6555_zpsthdn0xp9.jpg.html" rel="nofollow">  http://s118.photobucket.com/user/dennisstork/media/allis%20g%202019/720%20diesel/IMG_6554_zpstp10xjzq.jpg.html" rel="nofollow">  ------------- Own 5 720 garden tractors with associated equipment,1 620 garden tractor, 4 wheel 20 2-5015, 5020 and associated equipment and 2 electric forklifts. |
Replies:
Posted By: mnoonan-NEWI
Date Posted: 02 Feb 2019 at 9:27pm
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Awesome Dennis! A lot of guys are interested in putting a diesel engine in their 720's. Thanks for the pictures. Mike ------------- AC CA, Ferguson TO-20, Ford NAA, M-M BG, AC #3 Mower, SC Plow, PH Digger, AC 720's with Ark 700 loader & Brantly Backhoe, "Mini B" w/flathead Ford V8 |
Posted By: Nate (OH)
Date Posted: 03 Feb 2019 at 1:13am
| Very well done! How bad was the process? Other than notching the frame by the battery was there a lot of modifications needed to get it to fit? |
Posted By: den/southern illinoi
Date Posted: 03 Feb 2019 at 5:43am
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Process not too bad. Yes, notched the frame for the radiator. Also cut out the floor under the motor for the diesel oil pan. Did not have to cut out the mounting bolt holes for the Onan. Other than the dash, the whole process can be reversed and it can be an Onan 720 again. I actually bought a different dash just so I could have everything to put it back if necessary. Den ------------- Own 5 720 garden tractors with associated equipment,1 620 garden tractor, 4 wheel 20 2-5015, 5020 and associated equipment and 2 electric forklifts. |
Posted By: ac720nut
Date Posted: 03 Feb 2019 at 7:38am
| Looking nice, always wanted one of those |
Posted By: DSeries4
Date Posted: 03 Feb 2019 at 8:55am
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Boy that thing is shoe horned in there! A shame that it has less power than the original. Can you fit a turbo on it anywhere? ------------- '49 G, '54 WD45, '55 CA, '56 WD45D, '57 WD45, '58 D14, '59 D14, '60 D14, '61 D15D, '66 D15II, '66 D21II, '67 D17IV, '67 D17IVD, '67 190XTD, '73 620, '76 185, '77 175, '84 8030, '85 6080 |
Posted By: Steve in NJ
Date Posted: 03 Feb 2019 at 9:54am
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Like Prego! Its in there! Looks great Den! Steve@B&B ------------- 39'RC, 43'WC, 48'B, 49'G, 50'WF, 65 Big 10, 67'B-110, 75'716H, 2-620's, & a Motorhead wife |
Posted By: Dave (NE)
Date Posted: 03 Feb 2019 at 10:51am
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Do you still have access to all the same hydraulics like the front couplers for the front blade? Dave ------------- Do not argue with an idiot. He will drag you down to his level and beat you with experience. Mark Twain. |
Posted By: HudCo
Date Posted: 03 Feb 2019 at 11:25am
| nice set up i have been looking for a kubota b7100 4wd to or yanmar 4wd to put the all the 720 sheet metal on the whole tractor |
Posted By: HudCo
Date Posted: 03 Feb 2019 at 11:27am
| you will never go back to to that onan but i allways try to make sure my mods are reverable again ( back to oem) |
Posted By: den/southern illinoi
Date Posted: 04 Feb 2019 at 6:37pm
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No Dave (NE) we did not keep the front hydraulics. For this project (show tractor) we did not want to fight getting new piping to the front past the engine and we thought that hoses would be ugly. Total sacrifices on this conversion include the front hydraulics, foot clutch, both PTOs. Without major alterations to the frame and hood, the PTOs and clutch are out. When we did the narrow front on the 720, we lost nothing. The one item the narrow front end eliminated was the snow blower both for the weight of the thing and the drive shaft set up. Den ------------- Own 5 720 garden tractors with associated equipment,1 620 garden tractor, 4 wheel 20 2-5015, 5020 and associated equipment and 2 electric forklifts. |
Posted By: tadams(OH)
Date Posted: 05 Feb 2019 at 2:50pm
| Really looks like a nice job. |
Posted By: Dave (NE)
Date Posted: 05 Feb 2019 at 3:51pm
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Say, Den, do you bring your 720's to Hutch? Be neat to see them there. Dave ------------- Do not argue with an idiot. He will drag you down to his level and beat you with experience. Mark Twain. |
Posted By: JoeO(C-MO)
Date Posted: 16 Feb 2019 at 12:20pm
AHH!! Mystery Solved!!! ------------- D10 III, D15 II 3 pt, D15 II SC, 170 Gas w/shuttle, 175 Diesel UI ROPS, 185 w ROPS. AC 653 w/6 way blade, ROPS AC 615 Ind. WD45 running/Parts. |
den/southern illinoi wrote:Posted By: macvette
Date Posted: 22 Feb 2019 at 6:13pm
| Sure looks nice, Den! Good job. |
Posted By: DaveKamp
Date Posted: 23 Feb 2019 at 4:32pm
Probably less HP by virtue only of the shaft RPM. It would be more sprightly with the 3-cyl 25hp underhood, but it'd be a little more work to make it fit. FWIW... I pulled a flat-twin onan 19 out of my skid-steer, and am putting in a 3-cyl Kubota in it's place...  Not a good idea to put boost on the littleBotas. If the diesel doesn't have enough power, put the gas/spark head and a carb on it, and spin it faster. ------------- Ten Amendments, Ten Commandments, and one Golden Rule solve most every problem. Citrus hand-cleaner with Pumice does the rest. |
Posted By: HudCo
Date Posted: 25 Feb 2019 at 10:37am
| what about the trans oil cooler ? i did not see one |
Posted By: den/southern illinoi
Date Posted: 25 Feb 2019 at 3:20pm
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Oil cooler in is now a flat oil cooler that is mounted below the hydro on the bottom of the tractor. Tried to keep it in the same spot for looks if nothing else but could not clear everything. Den ------------- Own 5 720 garden tractors with associated equipment,1 620 garden tractor, 4 wheel 20 2-5015, 5020 and associated equipment and 2 electric forklifts. |