301 Diesel Engine
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=18033
Printed Date: 16 Jun 2024 at 8:49pm
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Topic: 301 Diesel Engine
Posted By: rmdiesel91
Subject: 301 Diesel Engine
Date Posted: 10 Sep 2010 at 12:42pm
I am looking to swap a 649 combine motor from like an L M or N into my 185. Besides the adaptor plates, what else needs to be changed to bolt this engine up?
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Replies:
Posted By: injpumpEd
Date Posted: 10 Sep 2010 at 12:48pm
was your 185 oil pump crank driven? if so, fairly simple. If not, oil pan/front axle clearance issues will need attention. rear adapter plate from your 185 engine, not sure on the front plate. I know 426's need it swapped or modified from combine to tractor. good luck.
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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: rmdiesel91
Date Posted: 10 Sep 2010 at 12:53pm
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The oil pump is cam driven and is in about the center of the pan. Now that you mention it, i do remember the oil pan looking different on the combine motor.
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Posted By: Tim-tn
Date Posted: 10 Sep 2010 at 1:49pm
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The rear pivot plate at the torque housing is longer on the 185's that had a crank driven oil pump. I just put a 301 in my 185. It was cam driven and now is crank driven. That part was not a problem other than finding the bracket. My rear bracket came off of a 200.
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Posted By: Hurst
Date Posted: 10 Sep 2010 at 2:41pm
You'll probably want to change the cam gear, as the 301 engines that were designed for an engine mounted hydraulic pump had a hardened gear whereas the other engines had soft gears. This may pertain to all timing gears up front and not just the cam gear, but for sure at least the cam gear, although some have not had a problem with using a soft cam gear on a tractor with an engine mounted hydraulic pump.
Hurst
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1979 Allis Chalmers 7000
5800 Hours
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Posted By: rmdiesel91
Date Posted: 10 Sep 2010 at 5:49pm
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So you didnt have any clearance issues with the front axle? And the rear adapter plate off a 200 will work?
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Posted By: DrAllis
Date Posted: 10 Sep 2010 at 6:02pm
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301 diesels were in Gleaner models "F", "G", "M" and some"L"'s......"N" series were 426 only. Hard timing gears including the cam gear were introduced in late 1971 or so in ALL 301 engines regardless of application. Any camshaft gear that has the long bolt retaining it is a hard gear. All model 200 tractors were hard gears and any 185 or Gleaner combine 1972 and up for sure. Rear plate from a 200 will work. Oil pan may hit the front axle if you try and use the deep pan so change the pan and oil pump back to the original style. This swap will be more work than you think....good luck.
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Posted By: rmdiesel91
Date Posted: 11 Sep 2010 at 11:03am
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Thanks, It's a 76 so its got the hardened gears. I guess the only thing left to figure out will be the oil pan clearance. I believe the motor I am looking at came out of an M.
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