Two-Ten with 670I out of N5 Timing issues
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=212266
Printed Date: 18 Sep 2026 at 12:57am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: Two-Ten with 670I out of N5 Timing issues
Posted By: ACD19farmboy
Subject: Two-Ten with 670I out of N5 Timing issues
Date Posted: 17 Sep 2026 at 6:19pm
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Greetings, I should contribute more then swinging through occasionaly in a dire way! Two winters ago we started the project of putting a 670I (Gleaner N5) engine into a Two-Ten. Orginal engine had sat open to the elements for many many years. I knew we would run into things with the front plate. We pulled rockers and cam and changed plates ,the injection pump holes were machined exactly in the Two-Ten plate as though it was on the combine plate to use N5 pump. I have photos but it seems to be a struggle I will try to upload later. Anyways everything went together pretty smoothly. Untill we went to start it. Messed and messed with it and it would just run absolutely aweful. My friend who I purchased the project from said we might have the pump 180 off. Sure enough we were. We had only ran it a little while like this knowing something was off. Silly mistake. From what I understand this engine is the same as a 7080? The book says 22° we set it there but the engine kind of idles with some unbunt fuel but definitely starts to miss a little when you pick up the throttle. If you pin its ears back it sounds as though it picks them all up sounds like like a dang puller, full throttle it has the flutter/miss again. We have worked off and on on it for almost two years now. Never leaving the shop. Happen to have a little time and was just trying to get imput on what I presume to still be a timing issue. Is 22° BTDC correct? Thank you in advance.
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Replies:
Posted By: 8070nc
Date Posted: 17 Sep 2026 at 7:10pm
Whitch pump. Roosa or m100
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1984 80780
1957 D14
DES 300 with 25000 engine
616 tractor
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Posted By: DrAllis
Date Posted: 17 Sep 2026 at 7:19pm
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Try 16 degrees on the Stanadyne pump.
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Posted By: ACD19farmboy
Date Posted: 17 Sep 2026 at 7:21pm
Roosa Master
DM4629RY3761 2400
3248034 4036378
These are all the numbers from the pump.
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Posted By: Kevin in WA
Date Posted: 17 Sep 2026 at 8:21pm
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Does it have Bosch Injectors? if so is the return line on the valve cover side? they can be installed a half a turn off, messes up the angle of the spray pattern and runs like crap.
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Posted By: DrAllis
Date Posted: 17 Sep 2026 at 10:26pm
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The basic engine is the same as a 7080 engine if they were both built on the same day. N-5's were 1980 and newer, so it has the large piston pins and 3 ring pistons. The injection pump however isn't the same as a 7080 and is set at 190 flywheel HP like a 7060 would have been. Timing works best at 16 degrees BTDC. I believe spec is 18 degrees. Bosch injectors must be positioned with the return line facing the valve cover.
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