Farm Equipment - 190xt gas to diesel

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190xt gas to diesel

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=210416
Printed Date: 18 Mar 2026 at 12:14am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: 190xt gas to diesel

Posted By: Rls0170
Subject: 190xt gas to diesel
Date Posted: 16 Mar 2026 at 4:43pm

If I want to put a 2800 diesel out of an F combine in place of a 2800 gas will the parts that need to be changed work from the gas (timing covers, timing gear and I've heard the cam). Is there anything else major?

Replies:

Posted By: Michael V (NM)
Date Posted: 16 Mar 2026 at 5:05pm

front and rear plate, water pump. front plate for mounts and hydraulic pump, jus hafta pull the cam, or camthere gear to change front plate. the rear has the mounts for the front axle pivot, combine does not..

this is jus a few things I can remember, there maybe more,, hopefully others will chime in

Posted By: tbran
Date Posted: 16 Mar 2026 at 5:44pm

You will have to have front covers from a diesel with hyd pump drive - your 2800 Gas does not have provisions for a fuel pump and the F combine has no provisions for the hydraulic pump drive. You may have an issue with the front crank pulley - the gas and diesel are one part number off - an XT would work - there is limited space and a crank pulley off a M2 will not work - ask me how I know.... the gas and diesel might interchange as I have no idea what the difference is.

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When told "it's not the money,it's the principle", remember, it's always the money..

Posted By: DrAllis
Date Posted: 16 Mar 2026 at 9:38pm

Gas and diesel solid cast iron crank pulleys are the same except for the timing marks are on the right side for the diesel and the left side for the gas. You'll have to use the tractor flywheel with the combine ring gear transferred to it.

Posted By: tbran
Date Posted: 17 Mar 2026 at 8:10am

I guess one could index the pulleys on the crank and transfer the degrees to be close enough for govt work. I once put a engine off an L in a XT and it would not turn over - big puzzle until I tried to move it with a prybar on the flywheel and heard a squeak from the front, the longer pulley was wedged against the front cast housing. After expecting to hear it run it is frustrating to have to split it apart and change pulleys... grrrr

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When told "it's not the money,it's the principle", remember, it's always the money..

Posted By: DrAllis
Date Posted: 17 Mar 2026 at 8:21am

It's those "trial-by-fire" training moments one never forgets !!!

Posted By: SteveM C/IL
Date Posted: 17 Mar 2026 at 10:02pm

Yeah well,I forget what the lessen was from the last time so I get to learn it all over again.....It don't get better with time.