Thinking too hard?

[DK44H]

I have a farmall H thats turing 60hp. It has 12.4x38 armstrong tires that are well road worn and sometimes I have trouble powering out. I was wondering if going to a larger tire size such as13.6x38 or bigger could help this. My thought is that a bigger foot print would spread the weight of the tractor out over the dirt making it easier to get that little bit of slip I need to keep pulling and keep the engine from stalling. Do the narrow tires create too much down pressure in a small area? I'm curious because I read about 45 and 50 hp H's running 14.9x38s and spinning out. Either they are telling tales ore I need to run bigger tires.
It sounds backwards to me, but I thought I'd at least ask. Thanks

 

[Anonymous-0]

How about dropping down a gear?

 

[toot]

what gear are you pulling? no way a 60 hp H should choke out in first.

 

[LCB]

You have something wrong if you are running out of power in low gear if you have a true 60HP.Had a buddy ran 13.38S and done real well at 50HP.He would go to 4500 at Priction In.You dont find a track that bites any better.I would sugest put on a dyoine and retune and see if you can find your problem.

 

[LCB]

You have something wrong if you are running out of power in low gear if you have a true 60HP.Had a buddy ran 13.38S and done real well at 50HP.He would go to 4500 at Priction In.You dont find a track that bites any better.I would sugest put on a dyoine and retune and see if you can find your problem.

 

[DK44H]

Pulling low gear. It seems like the engine can't hold steady, like it gets a certain amount of load then just loses it. Will do a dyno check agian before the season starts. Last time I ran it on a dyno it would spike to 68 to 69 hp then back down and hold between 58 and 60. On loose (and I mean loose) tracks I can handle 4500 ok most of the time but on a track with good bite its all over, nose stands up and powers out. From reading on this site I should have a fairly strong H, but I can't figure out why I'm struggling with power on 12.4x38's. Sometimes 4000 can be a bit iffy. Thanks for all your help, I know you guys can help me figure this out. Thanks

 

[Mob]

I have an H farmall and I pull 1st gear and run 16.9X38s and my tractor dose not really start hooking up till 5000 lbs then I just keep adding weight and usually stop around 7500 lb class.Maybe you need to really fine tune your H.I can get down to 3750 class and add some weight and move on up and pull with those Bigger tractors and have some fun.Good luck with your H .

 

[CJ_1080]

I know a little about an H. It sure sounds to me like either there is slop or a problem in the governor, or you have opened the carb venturi to far (not enough vaccum signal to the main jet). E-mail me and I will try to help you out if you care not to share your engine info in public.

 

[Anonymous-0]

Im guessing you do not have a true 60 HP. There is the right way and the wrong way to check horsepower. Running the tractor at factory rpms and pulling to 540 pto speed will give a good idea on your hosrepower. Not pulling down till it quits gaining hps. We can make a stock 4430 look like 200 hp at work. All in how a person wants to read it. My two cents!!

 

[DK44H]

THis was done over several pulls at the correct PTO speed. Also, the builder said the same. In any case, I still think with the mods done it should be able to handle the 12.4s better. Mob, I'm curious as to how you are handling that big of a tire at that kind of weight? You must be putting down some serious HP. I don't need that much, I just want a little more in the 4000 to 4500lb classes. Thanks

 

[CJ_1080]

DK44H I run 15.5-38's on my H and Have never spun them. They really grip, about 1 1/2 inch lugs and not cut. With that horse and first gear they should be a real good combo of speed and grip. If it has 60 horse you should have a good setup with them.

 

[Anonymous-0]

My last H was 210cid 3.75x4.75. It put out an honest 60 hp at 540 PTO. Most of the tracks that I pulled on were good biting clay. I ran 15.5 and 14.9x38 different times. I never ran out of power in 4500 in low gear. How light is your H without the driver? How high and how far from the axle is your hitch point? Did you look at the drive train with you built the tractor? H's respond extremely well to good bearings in the tranny.

 

[DK44H]

My H is 3200lbs without me on it. My hitch is at 18 inches back and either 18 or 20 inches high as I pull with two different clubs. How do I tell if its a bearing issue? Is there any other way than tearing into it? I don't hear any whines or groans from it. Could this be a governor problem? Maybe its not opening the throttle all the way under load? I have a nice set of 15.5's I would really like to run but theres no way running like this! Thanks for all your help guys

 

[Anonymous-0]

Does it go straight down the track? Does it pop out of 5th gear going up or down a hill? Those would be signs of possible bearing issues.

The governor, you can test by putting the engine under a heavy load at 1/2 throttle and then opening the trottle full. Did you bore/stroke it to get where you are? What did you do to the head, cam, manifold/carb?

 

[DK44H]

Well my grandfather built this tractor many years ago. He then sold it due to health issues. I bought it back on a sale and all he could remember was that it had 303 combine pistons in it with a pulling grind cam, 10 to 1 comp ratio, 366 chevy valves and petronix ignition. He thought it was around 195 cu in. Oh and it has an M carb on it running av gas. Any thoughts? Maybe i need to bore and stroke some more?

 

[Anonymous-0]

More stroke is always a good thing. You could go through the water jacket and get more bore as well. If it were mine, I would look at the cam. If you have any of the data from the cam grinder, you could check the alignment with a degree wheel. Or you could pull it and send it to one of the many shops that different people talk about on this forum. I am also very fond of the roller rockers that Murphy's Motor Service makes, they were a good investment on my tractor. Another low cost check is to look at your distributor and check to see if the advance is working. Make small adjustments to your timing during another dyno session to see if you can flatten out your torque curve, it seems to be falling too fast.

 

[DK44H]

Thanks I will definatley look into those areas. Better get started soon pulling season will be here before I know it!