Agco pulling tractor engine ??????

Real Pro-Stocks are single turbo (unlimited size). 24.5 x 32 tires, 680 cubes max and 10,000 lbs. The brand that dominates this class is John Deere big block power.  When you say 8500 lbs Pro-Stock are you talking a 4.1 inch turbo inlet  and maybe 466 max cubes???

Edited by DrAllis - 26 Feb 2022 at 7:49am

Why thanks for being very obsevant ! Always like these girs ,, lol,, Yes I have got a sweet XT , One Eighty, and D21 all up and going , I doing ask alot of questions and always like to hear what ppl have done ,as expirence is key - have got great advise from you - thanks - for that, I always like to do all I can myself - I never give someone an open checkbook like others do , Ill always be true to Allis - but gotta stay competative too, as in Agco Allis, this pulling forum gets boring with nobody posting ,,, so thats another reason I ask questions and will be posting alot more !!!!!! Get ready !!!! LOL

Edited by DougG - 26 Feb 2022 at 3:06pm

Most of the National organizations do. Cummins and Dertoit series 40 (which is 100% a Navistar engine) were used in new AGCO/White models and therefore are called a replacement engine.

But, you've never specified WHAT Pro-Stock class??? 466 cubes with 4.1 turbo inlet at 8500 lbs ??

Ed is any information on the 8.3 for the bottom end? Knew earlier days they had issues keeping them together with high combustion pressures.

DrAllis wrote: The Detroit series 40/Navistar engines had a much different cylinder head on them. Intake air went in the top of the valve cover and no intake manifold on the left side. So, my question is are those newer Navistar engines bolting on an older IH cylinder head ?? Or are they using the newer design head that came with the engine ??

DrAllis wrote: Good to know. I always assumed the head bolt pattern probably stayed the same, as it seems a change like that affects the build cost of any new engine Your engine is metric hardware, correct ??

I remember the injection pump sitting up much higher on the Detroit series 40 (and it's Navistar brother) from the early to mid 1990's. The MW in-line pump was almost as high as the valve cover.

Don't know. I seem to remember an extra idler gear in the front end to get the pump raised up.

DrAllis wrote: I remember the injection pump sitting up much higher on the Detroit series 40 (and it's Navistar brother) from the early to mid 1990's. The MW in-line pump was almost as high as the valve cover.

Went to the Cowtown finals yesterday- only Allis there was a D 21 and it had a 5,9 Cummins- seemed an 8,3 L would be better in that one, but there again, not sure of the class as they did not go in the pulling order of itinerary and the cubic inch limit may have been close with the 5,9

Edited by DougG - 20 Mar 2022 at 6:48am

To clear this up - it was the 6000 light pro field class 361 ci engine limit, so the 5.9 Cummins was perfect- just seeing a 21 I was expecting a bigger engine- and sometimes i type before i think ! Lol,

I'd have more questions, but I'll tell you what I did for a friend back in 1977. He had a series three 190XT that he farmed with, and he too wanted to do a couple of county fairs thru the summer months. I installed a set of 7080 injector tips (set at 2500-2800 psi), bottomed out the leaf spring inside the injection pump (done by removing the pumps top cover) and turned up the high idle to 2800 RPM. Now, he still used it on the farm like that. We would turn the torque screw in to bring it down to no more than 100 HP at 2,200 RPM. The extra high idle was never used on the farm, only on the track. He got along fine and never tried pulling equipment any bigger than what he already had.  It's been a long time, but I think it would dyno 150 HP set up like that. Since those early days, I have made several water/alcohol injection systems, spraying the mixture into the air stream inside the air cleaner can. Out of sight, a trigger switch on the throttle so it turns on when you go the last inch on the throttle lever. That was usually good for another 30 to 40 HP.   In the 80's I set up a One-Eighty with a pump and injectors made for pulling. He would swap those parts every summer and then swap back in the fall with the farming parts. Turbo was off of a 200 or 7000 tractor and it stayed the same year round. Water/Alcohol injection was used too.   We felt his probably ran 220 to 240 HP.I also had another customer in the 1990's that we just turned his XT up to similar numbers (130-140) and he managed to rip the transmission to pieces because he was sure he could manage all the Xtra power without issue when farming with it.  I can also tell you stories of people who went to all the work to make the engine run well and get to the county fair and have the foot clutch or power director clutch slip and make zero use of the Xtra HP they added. It's a hobby I have participated in for 50 plus years and most of the time enjoyed it.

Edited by DrAllis - 03 May 2022 at 8:33pm

Thanks for ideals sound like i try some of them your the man.