D17 HP
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=8776
Printed Date: 19 Jan 2025 at 5:19pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: D17 HP
Posted By: BrianC,Ont
Subject: D17 HP
Date Posted: 28 Feb 2010 at 1:51pm
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How much torque do you think a D17 rear end and power director take. We are going to build a lengthened D17 with a V8. If any one has done this with a D17 did they remove the power director and run straight to the rear end. I would like to run just the V8 with a scatter shield and no transmission with a shaft back to the tractor input shaft and kepp the PD. There is a guy pulling around here that uses a 350 with an Allison auto out of a bus.
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Replies:
Posted By: DrAllis
Date Posted: 28 Feb 2010 at 2:15pm
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The Power Director clutch would be suspect to fly apart/explode with speeds over 4000 rpm on a continuous basis. The rearend/transmission will take a lot when you only weigh 5000-5500 lbs. Modern day tire cutting(and mechanical sleds) usually leaves you with short lug bar depth which cuts down on starting traction stress on the driveline.
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Posted By: AndrewGubbels
Date Posted: 02 Mar 2010 at 6:45am
we have a local guy in our pulling group that has a v8 mod D17. He still has the power directer in the tractor with a 350 chevy. He runs I would say 5500 rpm down the track when he gets up to speed. It runs very well. He does not shift the power directer on the go but he does use the high and low sides. It is just for the short 300 ft track. The time spent over 4000 rpm is only 10 seconds and his pull is over. He has never had problems and did very well. I can give you his name and number if you would like to talk to him about it. I hope this helps!
Andrew Gubbels
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Andrew Gubbels
Gubbels Restoration
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