Dynoed my WC Video
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=56266
Printed Date: 06 Sep 2025 at 10:14am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: Dynoed my WC Video
Posted By: AaronSEIA
Subject: Dynoed my WC Video
Date Posted: 03 Sep 2012 at 7:16am
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Ran my 36 WC on the dyno at Old Threshers yesterday. According to the guy running the dyno she made 32 horse. Has 175 pistons on a 4" crank. Stock carb. I wanted to run my WD again to compare them on the same day/dyno but I forgot to bring my drawbar in. AaronSEIA [TUBE]http://youtu.be/ds01y3s8nCM[/TUBE]
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Replies:
Posted By: jlogli
Date Posted: 03 Sep 2012 at 3:30pm
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Thats pretty good! My series IV 17 did 50 horses. Some guy said that the live hyd pump takes ten extra horses away from the motor. Any truth to that? ------------- 1945 WC on full steel, WD wide front, WD45 power steering, 1966 D-17IVfactory 3 point.1967 D-17IV SC. 1973 rotobaler white top. orange top roto, model 90 combine,82S, four bottom plow.302 baler. |
Posted By: TramwayGuy
Date Posted: 03 Sep 2012 at 3:43pm
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175 pistons are designed for 4.5" stroke crankshaft. You would probably be better off with WC/WD pistons. Change to a wd45 crank and see what it does then! |
Posted By: R.W
Date Posted: 03 Sep 2012 at 3:52pm
| Nice! That's a sweet sounding old WC! |
Posted By: CTuckerNWIL
Date Posted: 03 Sep 2012 at 4:18pm
Sounds great except that GRRRR GRRR at the very end of the video
------------- http://www.ae-ta.com" rel="nofollow - http://www.ae-ta.com Lena 1935 WC12xxx, Willie 1951 CA6xx Dad bought new, 1954WD45 PS, 1960 D17 NF |
Posted By: AaronSEIA
Date Posted: 03 Sep 2012 at 6:03pm
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Yeah, I'm not happy about the find'em or grind'em clutch on the old girl. It's set up right, but seems to have some drag. As for the 175 pistons, that was a setup that Tom Obrian at Ellis imp in Coggon suggested for me. Claimed more power than stock pistons, but less than on a 4.5" crank. I'm not sure I'm man enough to roll her over with 175 pistons and a 45 crank. AaronSEIA
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Posted By: CTuckerNWIL
Date Posted: 03 Sep 2012 at 6:57pm
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175 pistons actually give you a lower compression ratio than stock WC-WD pistons. I have the 4 1/8 bore kit in my 35 and I don't crank much on her. Course I got an E start set up too. ------------- http://www.ae-ta.com" rel="nofollow - http://www.ae-ta.com Lena 1935 WC12xxx, Willie 1951 CA6xx Dad bought new, 1954WD45 PS, 1960 D17 NF |
Posted By: DrAllis
Date Posted: 03 Sep 2012 at 7:22pm
| AGCO OEM 4 inch bore model 175 pistons will pretty much equal WC/WD gas pistons in compression ratio and give you the Power Crater bowl for a little different sound. The fact that it has 32 HP instead of 28 HP would sure indicate that compression is just fine with a 4 inch stroke crank. |
Posted By: LouSWPA
Date Posted: 03 Sep 2012 at 7:30pm
------------- I am still confident of this; I will see the goodness of the Lord in the land of the living. Wait for the Lord; be strong and take heart and wait for the Lord. Ps 27 |
jlogli wrote:Posted By: AaronSEIA
Date Posted: 03 Sep 2012 at 7:37pm
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Thanks for the info, Dr Allis. I knew Tom wouldn't steer me too wrong, he bled orange 15 years ago when I put her together. it is an AGCO kit, so they are 4" 175 Power Crater pistons. Always wanted to put it on a dyno and see what it'd do. AaronSEIA |
Posted By: DrAllis
Date Posted: 03 Sep 2012 at 7:37pm
| Not 10 HP but 4 to 5 HP for sure....not 10. |
Posted By: CTuckerNWIL
Date Posted: 03 Sep 2012 at 8:47pm
So if you get the same CR with 226 pistons in a 201, how is you can get higher compression putting 201 pistons in a 226? Are you talking all fuel compression or gas engine compression? ------------- http://www.ae-ta.com" rel="nofollow - http://www.ae-ta.com Lena 1935 WC12xxx, Willie 1951 CA6xx Dad bought new, 1954WD45 PS, 1960 D17 NF |
Posted By: DrAllis
Date Posted: 03 Sep 2012 at 9:05pm
| When you install factory 175 pistons (that are 8.25 to 1 ratio with a 4 1/2" stroke and are 180 psi compression pressure) with a 4 inch stroke crankshaft, you are lowering that piston down to approx 5.75 to 1 ratio (gasoline) and 110 pounds pressure. Always remember valve protrusion and head gasket thickness have some affect on actual compression pressures. |
Posted By: Lonn
Date Posted: 04 Sep 2012 at 6:08am
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I agree 100% with DrAllis. I put 175 pistons in my WD using the stock 201 crankshaft. Never dynoed it but the compression ratio is around the 110 psi. The 175 pstion is about a 1/4" taller than the WD piston but with a cup that has just a bit over 1/4 depth to it. It works out to be about the same amount of material above the wrist pin and so about the same compression is achieved with the benefit of a power crater piston, if there is much benefit. Going a little off topic, some hot rod mopar magazine I read many years ago claimed an engine designed for a cupped piston gave better performance over an engine designed for a domed piston with all else being the same. The cupped piston would hold the exploding gasses better vs the domed piston letting more of the exploding gasses past the rings. Makes sense to me and I think the same would apply to a cupped piston vs a flat piston to a lesser degree. ------------- -- --- .... .- -- -- .- -.. / .-- .- ... / .- / -- ..- .-. -.. . .-. .. -. --. / -.-. .... .. .-.. -.. / .-. .- .--. .. ... - Wink I am a Russian Bot |
Posted By: TramwayGuy
Date Posted: 04 Sep 2012 at 6:25am
| Not to be nitpicky, but atmospheric pressure is 14.7 PSI, so if you have 5.75 compression ratio, the most you can get (theoretically) is 85 PSI. Usually there are some losses even then, so would be even less. |
Posted By: DrAllis
Date Posted: 04 Sep 2012 at 6:48am
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A-C repair manual spec is 110 psi for a WD with 5.75 to 1 compression pistons. |
Posted By: Bill_MN
Date Posted: 08 Sep 2012 at 8:58pm
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so...which combination of WD/WD45/175/D17components gives you the highest compression and/or horsepower? When I rebuild the WD I would like to add some power, thinking WD flat tops with a 45 crank? what would the ratios be? ------------- 1951 WD #78283, 1918 Case 28x50 Thresher #76738, Case Centennial B 2x16 Plow |
Posted By: mlpankey
Date Posted: 08 Sep 2012 at 9:12pm
------------- people if they don't already know it you can't tell them. quote yogi berra |
Posted By: DaveKamp
Date Posted: 08 Sep 2012 at 11:22pm
Now you guys did it... brought him in with his 'ring placement' soapbox again... ------------- Ten Amendments, Ten Commandments, and one Golden Rule solve most every problem. Citrus hand-cleaner with Pumice does the rest. |
Posted By: CTuckerNWIL
Date Posted: 09 Sep 2012 at 9:47am
Please explain in the simplest terms, how swapping things from left to right would make an engine run stronger. ------------- http://www.ae-ta.com" rel="nofollow - http://www.ae-ta.com Lena 1935 WC12xxx, Willie 1951 CA6xx Dad bought new, 1954WD45 PS, 1960 D17 NF |
Posted By: Rod B
Date Posted: 09 Sep 2012 at 9:54am
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Wrist pin offset. Maybe drill the camshaft full of holes to lighten it or get it timed right. He forgot the rest. Though he did say not to beleve everything you read. This applies to anything he posts Congrats on a nice running WC btw. ------------- for the money there is nothing better than provoking idiots and posers |
Posted By: mlpankey
Date Posted: 09 Sep 2012 at 2:34pm
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Its a dome piston swap side to side get the piston pin offset. pin offset .090 from factory emgine will rattle cold but goes awat when warm. Racers say its worth. 2 in a quarter in a 13 second ride. ------------- people if they don't already know it you can't tell them. quote yogi berra |
Posted By: Rod B
Date Posted: 09 Sep 2012 at 6:06pm
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Like I say. Wrist pin offset. Now for pankey's homework assignment. Find an original M&W piston for an Allis 201 or 226. M&W part AP46 or AP48 and measure the wrist pin offset. The M&W co was on to something. ------------- for the money there is nothing better than provoking idiots and posers |
Posted By: mlpankey
Date Posted: 09 Sep 2012 at 6:23pm
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M@w offset to be quiet to so tunning them 180 would make the the power to like it does on the mopar swaping sides no homework posted that before you came to forum.putting the piston so that the first compression ring is position the highest it can be in the bore makes compression and taking away pin offset does just that.forged pistons suppose to be noisy. If you believe in quench and squish a flat top does just that with the most piston top area to not to mention flame propegation is not impeeded across the flat either. if you like flames out the exhaust run dish pistons the fuel thats unburned do ti the insufficiency of the dish will do just that for you. ------------- people if they don't already know it you can't tell them. quote yogi berra |
Posted By: Rod B
Date Posted: 09 Sep 2012 at 6:41pm
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obviously you have not measured them and know verry little about the subject. When you have some solid info come back to play ------------- for the money there is nothing better than provoking idiots and posers |
Posted By: mlpankey
Date Posted: 09 Sep 2012 at 6:53pm
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dished pistons are ineffecient when compared to flat tops in combustion the flame out the exhaust from the unburned trap fuel by the dish pistons proves just that. mailto:m@w" rel="nofollow - m@w pistons in 4 1/8 overbore made 8 more hp on a wc according to their advertizement . thats verry little increase due to design of piston / pin location when you take the cubic inch increase away from the over bore. only two ways to make horsepower on a naturally aspirated engine. compression is one cubic inches is the second way.everything else is just to support those two things. ------------- people if they don't already know it you can't tell them. quote yogi berra |
Posted By: Rod B
Date Posted: 09 Sep 2012 at 6:59pm
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Carefull pank. What you may realize (if you learn enough) is that power comes from an efficient engine design. Part of that may be rod angle. It's going to be a trick assignment for you. But when you do find a piston to measure and come back with some solid info please tell us what the compression height of both an AP46 and AP48 are. As well as the pin offset. ------------- for the money there is nothing better than provoking idiots and posers |
Posted By: mlpankey
Date Posted: 09 Sep 2012 at 7:06pm
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short rods make more torque by achieving right angle sooner. long rods are for sustained 8000 rpms or more. all torque engines have low rod ratios its a trade for the increase cubic inches . The 800 inch big blocks have a low rod ratio its the facts of life . if high rod ratio is a power secret then the 201 should of made more hp than the 226 but it didnt did it. ------------- people if they don't already know it you can't tell them. quote yogi berra |
Posted By: Rod B
Date Posted: 09 Sep 2012 at 7:17pm
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The point I'm makeing is so far over pankey's head he fails to even realize it. Pointless to go any further with the subject. I didn't see you competeing in Eagleville pankey. Why not? Is it because you are your own mechanic and have nothing to compete with? ------------- for the money there is nothing better than provoking idiots and posers |
Posted By: mlpankey
Date Posted: 09 Sep 2012 at 7:22pm
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we havent been to eagleville in a while . how did you do . its not hard for me to txt tracy reed or call cody so no need to exagerate acomplishments. ------------- people if they don't already know it you can't tell them. quote yogi berra |
Posted By: Rod B
Date Posted: 09 Sep 2012 at 7:27pm
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Stick to texting them. They laugh at you in person and don't want to talk to you anyway. Texting takes the personality out of it and will save your feelings some pain ------------- for the money there is nothing better than provoking idiots and posers |
Posted By: mlpankey
Date Posted: 09 Sep 2012 at 7:34pm
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its obvious you dont know why i would txt tracy . he has a hard time reading lips or seeing signs tthrough the phone. So its obvious you havent pulled against him . so hows setting in the stands been ------------- people if they don't already know it you can't tell them. quote yogi berra |
Posted By: Rod B
Date Posted: 09 Sep 2012 at 7:49pm
Does this mean that I'm elevated to the same status as wi50? You are also his 'internet stalker' I don't pull anything there is a class fo Eagle.ville. I run with windmills and smoke ------------- for the money there is nothing better than provoking idiots and posers |
Posted By: mlpankey
Date Posted: 09 Sep 2012 at 7:59pm
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Most stalkers are spectators since your spectating pulls of wi and traveling to tn looming for me i would say you qualify as both of our stalkers.now quit high jacking Aarons posts ------------- people if they don't already know it you can't tell them. quote yogi berra |
Posted By: mlpankey
Date Posted: 10 Sep 2012 at 8:29pm
------------- people if they don't already know it you can't tell them. quote yogi berra |
Posted By: CTuckerNWIL
Date Posted: 10 Sep 2012 at 8:54pm
------------- http://www.ae-ta.com" rel="nofollow - http://www.ae-ta.com Lena 1935 WC12xxx, Willie 1951 CA6xx Dad bought new, 1954WD45 PS, 1960 D17 NF |
Posted By: mlpankey
Date Posted: 10 Sep 2012 at 9:00pm
------------- people if they don't already know it you can't tell them. quote yogi berra |
Posted By: DaveKamp
Date Posted: 11 Sep 2012 at 2:12am
Yep. ------------- Ten Amendments, Ten Commandments, and one Golden Rule solve most every problem. Citrus hand-cleaner with Pumice does the rest. |
Posted By: Lonn
Date Posted: 11 Sep 2012 at 6:28am
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I'm looking for a smiley face with a belly laugh.
------------- -- --- .... .- -- -- .- -.. / .-- .- ... / .- / -- ..- .-. -.. . .-. .. -. --. / -.-. .... .. .-.. -.. / .-. .- .--. .. ... - Wink I am a Russian Bot |
Posted By: Rod B
Date Posted: 11 Sep 2012 at 7:00am
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I watched pankey TRY and argue with wi50 about compression on these M&W pistons for 2 weeks one time. Finally pankey called a friend of mine, realized he was wrong and then changed his argument to something else. It was a simple case of A+B+1/2C=X and X is greater than the deck height of the 226 block. So pankey did you do your homework yet? ------------- for the money there is nothing better than provoking idiots and posers |
Posted By: mlpankey
Date Posted: 11 Sep 2012 at 8:12am
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No one changes topic better than rod. He managex to do it high jacking Aarons thread three times and still stalking. ------------- people if they don't already know it you can't tell them. quote yogi berra |