Farm Equipment - d17 gear ratios

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d17 gear ratios

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=198193
Printed Date: 24 Sep 2024 at 5:22pm
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Topic: d17 gear ratios

Posted By: HudCo
Subject: d17 gear ratios
Date Posted: 12 Nov 2023 at 8:03pm

are they the same for gas and diesel ?

Replies:

Posted By: DrAllis
Date Posted: 12 Nov 2023 at 9:06pm

All transmission gears are the same. The ring and pinion is the same too. Final drives are also the same.

Posted By: HudCo
Date Posted: 12 Nov 2023 at 10:57pm

thanks thats what i thought

Posted By: SteveM C/IL
Date Posted: 13 Nov 2023 at 6:58am

At this time the 2 engines were running same rpm? Not like WD45 days where diesel was a good bit faster than gas rpm therefore requiring different PTO box and ring & pinion.

Posted By: CS_IN
Date Posted: 13 Nov 2023 at 2:25pm

Yes this is correct. The gas engines were upped to 1650 governed RPM at the beginning of the D17s. The WD45 gas engines were 1400 RPM. The D17 ring and pinion is the same as WD45 diesels. I have a WD45 diesel that someone put a gas rearend in. I am using D17 parts to put it back correct.