Allis-chalmers 220

Your information is pretty vague, at best. Your injectors might be .020", not .20 (which is nearly 1/4" inch... and how many holes do they have?? Who did your injection pump work?????? and how many cc's of fuel were you told it delivered?? Did you change the drive shaft for the injection pump?? if not, there is a bigger/better pump than what you have, so yours isn't the biggest if you have the stock driveshaft. You say nothing about a different turbo. There are big improvements to be made there. You have done nothing about the clutch ?? What weight classes are you running??? Have you even pulled it yet ??  What are the Rules you will be expected to deal with ?? like speed limit, RPM's, tire size, weight, etc etc etc.

Soooo, the 220 I used to have would run 6th gear in the 11,000 pound class with 20.8 x 38 radials and at 3,000 RPM with 10 MPH top speed.  Always figured it was around 375 to 400 HP.  I wouldn't think it could have handled 7th gear at 9,000 lbs, but surely  a gear between 6th and 7th if there wasn't a speed limit.  What gear are the best Farmall 1066's running??? That is a measure of how much HP you're going to need to be competitive.  Don't waste your time and $$$ trying to change your compressor wheel. Get a good modern turbo. Your clutch will not hold much over 250 HP depending on its condition.

6th gear will compare well to the High 2nd on the Farmall. Stock clutch disc with 4 pads only (not 6 pads) and extra springs inside of the existing pressure plate springs. Absolutely no need for a double-disk clutch in this application, unless you want to spend $$$$ uselessly. I used an HX-50 turbo, so I'd guess an HX45 is a bit smaller.

No such thing as an HX45 that I know of. Goes from HX40 - HX50, 52, 55, 60 and up. In my mind you are needing somewhere between a 40 and a 50. Something with a 2.3 - 2.4 inlet with a 2.4 - 2.6 outlet. Borg Warner has a nice, small S300 turbo in this category also. Intercoolers are awesome if you can use them. Cheapest HP ever.

I will say this, at least it sounds like you are in a situation where you can compete with what you have to work with. Some day there will be some cobb roller with a Farmall that will install a 500 plus cc pump and run in a gear that is flirting with road gear and the party might be over. Until then you should be able to run with any IH in high 2nd.

Something else that if you can do yourself doesn't cost much is a light port job on the cylinder head. Practice on a junk head if you have one. No big reshape here, just knock the bumps out of the valve pocket area so things are as round and smooth as you can get them. Be sure the short side radius is of a nice consistent shape. Do a nice valve job. No crazy valve spring pressures. Also, when you overhaul it there is no need for new pistons and sleeves. Find nice, used parts, clean them well, and assemble them with new rings and you are good to go.

D.I.S does good work, but talk to InjpumpEd. He can make a pretty juicy Roosa Master.

Good luck. Nice to hear of a young kid wanting to do it.

Edited by O.P.S. Heads - 22 Jan 2014 at 6:20pm

first, it's going to be very hard to get a 220 to 9000 lb. 11,000 would be better suited to keeping it "farm stock". A 220 is a little heavier than a 210. Our 210 Agent Orange has been "heavily" stripped to get to 8500#, not sure what weight class Injection Pump Ed pulls his 210 in but dought it is 9000. Second as Ed said be sure you go with bigger injection lines or you will seize that 450 head and have an expensive door stop when done (got one). Third, do some research before you buy a turbo ( and you will need to buy one ) as there are some that will work good for your combination. Call Ed or some performance shops for oppinions and get a few oppinions. Good luck   Doyle

thanks for all the very helpful advice everyone,you have no idea how much i appreciate it!! I still have some questions though. i have found it really hard to find any performance parts for my allis..where do i go or talk to? my concern about buying a turbo is if it fits or not and its hard too tell by just looking online. 

The turbo choice you make depends a lot on how much fuel you're giving it. You haven't told us how many cc's of fuel your pump is set for or the exact size of the injectors.   Your description of "biggest rotary I could get" doesn't do much for me when it comes to fuel delivery.

 i know a lot of these guys don't like them but a 3lm with a 2.30 inlet will bolt to your stock exhaust manifold and should cost around 200-300 dollars with exchange. i have one on my d-21 and with a 3000 rpm limit ,450 head ,big lines and my injectors lasered to match by st joe diesel it shows between 40-45 pounds of boost in 6th gear. there are probably better turbos but if you're on a budget this one has worked well for me.  also it's not all about horsepower. good tires , hitch and balance make a bigger differance than what most people think. my brothers and i have won against bigger cubes ,bigger pumps and bigger turbos because our opponents machines are not putting their power on the ground. my d-21 weighs 7500 lbs. with the driver and no weights in this class and 6 out of 8 hooks this year took 1st and i think took 2nd the other 2 times.this tractor balances well. do the rules say stock or stock appearing frames . those rails can be made out of lighter steel or aluminum and painted to appear stock, that heavy cast that they are talking about can be a box made out of 1/2 in. steel and lose that heavy 220 wide front and replace it with a 200, 190, 180 or even a 170 wide front. pressed steel wheels on the back and you have a light weight 220 . it all depends on what the rulebook says you can do

My 220 weighed 8,500. 20.8×38. Front cast around radiator. A-pump @ 400cc, H2 holeset charger. I ran 7th gear in 9,500lb. Class.

i should have cleared this up before i got my injection pump built as big as i could and still be able to turn it back down to stock. its right around 200cc's of fuel. you guys think i need more??

Just a little info for you here. I have a 200+cc roosa pump on a 301 in my 190 and I'm not near the hottest thing in the farm stock 7500 and 8500 classes. I would think you would want more than that on your 426.

If you are going to turn it into a full time puller and the rules will allow it, go to an injection pump that will allow you to grow as time goes on. I suggest a P series pump again - if rules allow it.