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AintCheatnAintTryn 
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Joined: 27 Feb 2025
Location: pennsylvania
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 Topic: D17 engine builds
Posted: 21 Aug 2025 at 2:00pm |
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My pulls for the year are all wrapped up, all said and done I think I did pretty good with a bone stock 17, that said my motor definitely needs a rebuild. Ended up getting the green light to build it as I want/can afford. I've been on a few different forums and have some ideas but I'd like to hear what builds everyone else has done and what HP was got. I'll be building for heavy weight, 7k and above, I believe up to 18k, dead sled, clay track. I'll be pulling transfer as well but I care more about the dead sled.
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who needs practical experience when you have a computer, a calculator and ideas? me.. dumb ideas get expensive fast.
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AintCheatnAintTryn
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Joined: 27 Feb 2025
Location: pennsylvania
Points: 22
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Posted: 21 Aug 2025 at 2:06pm |
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A few people have mentioned that d17s are no good for classes above 7000 pounds, while I won't say that they are all wrong, my family and I have had vastly different results. Every year two of my cousins pull d17s in the 9000 and unlimited classes and do very well, last month my brother even out pulled both of them on a d17 diesel weighting in at 16820. More farmall 400s and 450s get winched onto trailers and Allis's. (5 farmall, 0 allis). I can see about providing pictures and videos if anyone is skeptical.
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who needs practical experience when you have a computer, a calculator and ideas? me.. dumb ideas get expensive fast.
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WF owner
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Joined: 12 May 2013
Location: Bombay NY
Points: 5020
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Posted: 22 Aug 2025 at 6:07pm |
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You can pull any class you like for a while....
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tbran
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Joined: 14 Sep 2009
Location: Paris Tn
Points: 3523
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Posted: 23 Aug 2025 at 9:44am |
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Yes, sir, I painfully would like to see your D17 with 11,000 of weights slung on it.
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When told "it's not the money,it's the principle", remember, it's always the money..
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AintCheatnAintTryn
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Location: pennsylvania
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Posted: 24 Aug 2025 at 12:29pm |
https://imgur.com/a/8ed1wgwI hope imgur is okay. I'll be adding more pictures and videos later in the day.
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who needs practical experience when you have a computer, a calculator and ideas? me.. dumb ideas get expensive fast.
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DrAllis
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Joined: 12 Sep 2009
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Posted: 24 Aug 2025 at 8:39pm |
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It's been 30 years ago, but I saw an 88 Oliver break in half at a tractor pull. He only weighed 10,000 lbs, not 16,000. Whomever your insurance company is for these events must not ever show up to watch what they are liable for. And if they have watched what's going on, are totally ignorant of what could possibly happen.
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WF owner
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Posted: 25 Aug 2025 at 5:55am |
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I can't imagine any pull sponsor allowing something like this to happen. I hate to be rude, but even this is absolutely dangerous (and a few other things).
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AintCheatnAintTryn
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Posted: 25 Aug 2025 at 4:35pm |
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I don't mean to come across as rude in this comment or whole thread. I would like to make a few comments here. 1. I had asked about motor builds and suggestions. Dr Allis, you have recommend 100hp builds for d17s in 5000lb classes, with the bore and stroke you can get out of a 17 I can only assume these are high rpm motors running high compression. I haven't seen enough comments by WF owner to nitpick anything he specifically said by other things I've seen him recommend to people. Both of you have mentioned that pulling that heavy is dangerous and whatever "a few other things" implies and while I can't entirely disagree with the statement, we are running STOCK tractors, low compression and rpm, max of 2mph when pulling that heavy. There absolutely is a natural risk with any style of pulling but hot stock and modified tractors are far more likely to grenade a motor and send shrapnel. as of thus far the worst failure we've I've seen was a broken axel housing, while there is a risk of a tire hitting the driver in that event. Fortunately everyone that pulls in the heavy weight class has though of this in at least some aspect, wheely bars, weight brackets, and supports are in positions to catch the tractor and protect the driver. Please, if there is a concern with how our pulls are handled, wether it be in regards to the tractor we'll being or the drivers safety I would be more than happy to shed some light on how things are done at our pulls. Questions comments and concerns are welcome but it would be appreciated if it were more than just saying that it's dangerous and "a few other things"
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who needs practical experience when you have a computer, a calculator and ideas? me.. dumb ideas get expensive fast.
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steve(ill)
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Joined: 11 Sep 2009
Location: illinois
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Posted: 25 Aug 2025 at 6:55pm |
David, could you explain the rational for using a D17 in a 16,000 pound class with higher HP... I would think you would be worried about the final drives, trans, clutch, besides the engine... Why would one not use a D19 or D21, etc ??
are youi limited to engine displacement or ??? Not arguing, i just dont understand..
Edited by steve(ill) - 25 Aug 2025 at 6:59pm
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Like them all, but love the "B"s.
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DrAllis
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Posted: 25 Aug 2025 at 8:36pm |
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My engine builds for a gas D-17 are 400 cubes and 100+ HP at 2000 RPM. Not high speed. The guy that broke the Oliver in two pieces never expected anything like that to happen either. He was 100 HP back in those days. He fixed the tractor and never weighed it down that heavy ever again. I know for a fact Farmall M's would break rear axles when they had a mounted corn picker on them. It was a common failure. So best of luck to your pulling group and hope nothing ever happens.
Edited by DrAllis - 25 Aug 2025 at 8:40pm
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AintCheatnAintTryn
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Posted: 11 hours 17 minutes ago at 8:19pm |
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Were always worried about breaking some components. It really boils down to we just want to, things will wear out and break but so far neither I or any of my cousins or uncles that pull Allis have seen a d17 break when pulling. I couldn't tell you exact weights of tractor but offer the past 8 years there's been a d17 loaded to 14k-17k for our "king of the mountain" class.
The reason for the tractor model being a d17 and not a 19 or 21 id because the club I'm has a year limit, 1960 and older. The rules are pretty relaxed and basically boil down to "the tractor must appear stock". No motor swaps that weren't available at the time, to turbos, no injection unless a factory diesel motor.
What you do inside the block and transmission is essentially up to you.
That's the thought process behind wanting to build a 17. In my experience (4 years) and my uncle's who got me into this (12 years). A d17, even a series 1 has yet to have any issues that weren't clutch or motor related.
I know it can and will happen eventually but I'll cross that bridge down the line, I just want to know what it'll do before that. So far it's weighing in at just shy of 16k and pulling 21k.
Thank you for the question,
Dave
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who needs practical experience when you have a computer, a calculator and ideas? me.. dumb ideas get expensive fast.
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AintCheatnAintTryn
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Posted: 10 hours 54 minutes ago at 8:42pm |
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Dr Allis, a few things id like to say here, admittedly I don't know much about farmalls so I'm going to take your word on that information about the corn pickers, I know of one super M that runs a corn picker on occasion but I'm not sure if super M's have different axles or housing than a regular M. I will say though that I've seen a few M's and 400s crack hubs when pulling dead sled.
In regards to the Oliver 88, I could be wrong, I don't know Oliver's at all but I believe they have a lighter, thinner axel housing and axel. I've heard of 77s and I think super 77s breaking while plowing which is the only reason I didn't get one myself.
I would love to know what you did to get a d17 motor to 400 cubes and 100+ HP at only 2000rpm if you're willing to share the info and possibly bounce back ideas I think that would be great. I joined this form to learn but I'd doesn't seem like him I pull is liked by the forum.
I'm certainly not trying to start any arguments here but I hope you can understand how someone would get frustrated in my shoes. I completely understand that as so.e point I will break my tractor but that's part of the game for me, finding the weak link and making it stronger, personal experience and experience from those I know right now tell me it's the motor. I'll be watching out for the final drives as you've cautioned before but I'm playing this as it goes.
Thank you,
Dave
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who needs practical experience when you have a computer, a calculator and ideas? me.. dumb ideas get expensive fast.
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T Hunter
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Joined: 07 Jul 2019
Location: Kansas
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Posted: 7 hours 49 minutes ago at 11:47pm |
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Aintcheatn.....I don't participate regularly on here but have noticed a few things.
First off I was really looking forward to seeing the results of your post. I am sorry but in my eyes it " got hijacked ". If I were to break in a thread and ask an off color question or post something off subject I am sure I would be corrected /reprimanded.
Second it is your business what you do to your tractor as far as modification or treat it. I see people leave them for dead, scrap them, even put engines in them that were never intended to be in them.
Third I believe building a motor 2 times or more cube, 3 times the horse power and or exceeding designed rpm rating is no different than 2 or 3 times the wieght of ship wieght.
Forth we all know the dangers of motor sports. I only hope common sence will prevail, from the promoters, operators, and even the spectators. (Especially to protect lives)
I see people get criticism all the time on here, including myself. I only wish we could all just be happy that everyone on here has a common interest. From what I get told "maybe you could start a new thread" and leave your details out on weight so that you might get "non judged" information you are looking for.
I been around orange all my life, and love antique pulling. Wish I knew more about it. Unfortunately its a tight lipped click. I even considered paying to have an high dollar motor build for a 1500 dollar tractor to attempt to be competitive. Unfortunately they turn me sour when I get the cold shoulder.
In conclusion....
I just can't see a young person trying to learn and enjoy an old hobby get criticized....if there is positive comments on the subject of the title ....GREAT!
If not just do what what I always receive....SILENCE!
In conclusion...
Sorry to raid your post, and I hope you get the info you are searching for.
Enjoy your hobby.
I wish you the best of luck!
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