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About SD6788

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    Advanced Member
  • Birthday 07/09/1983

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  • Location
    South Dakota
  • Interests
    Restoring and collecting IH's.

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  1. SD6788

    Original 88 series specs

    Isn't the main problem the bronze washers that's sat in the cross in the housing? I thought that's why they went to needle bearing and the problem was solved.
  2. SD6788

    Original 88 series specs

    This was an original article published in the SAE journal. Thought you guys may enjoy. I always thought the 50 and 52 had different diffs and final drive ratio's. Now this is straight from IH and it looks like they are the same. Wonder why 5088s shelled them out faster at lower hp levels.
  3. SD6788

    PTO horsepower ratings

    We had a 1971 1066 when I was young and my uncle had a 1974 model. The power and smoothness of the later model was very noticeable. The late one had a completely different feel to it and I would bet 20-30 hp more than the early one. Neither of them were turned up. When the black handles came out there was a difference that I could tell.
  4. SD6788

    PTO horsepower ratings

    Not sure but they came a little bit hotter then 125. There was a run in 1973 where a few tens got a 436 installed instead of a 414. Guess they ran short of engines and used the 436. It very well could have 152. Guess we just have to take the owners word for it.
  5. SD6788

    2+2 power distribution

    Hi guys. The 2+2 was designed with a 54% front and 46% rear weight distribution. Power is always transmitted to the axle with the most weight. Plowing can transfer 1-2000 lbs of weight but that only gets you around 50-50. So how did engineers send more power to the rear axle instead of the front ? Did ih run a lead like every 4wd pickup needs in order to not tear themselves apart? With a 6788 at 170 hp how did that front axle take 85 hp and more weight than the back?
  6. SD6788

    Early 1066 vs late 1066

    Cool report. Didn't know the 10 had all those changes. Where it says 15 tooth pinion is that on the ring and pinion or the cross gears in the diff? From what I've gathered it sounds like the 10 got a lot of the upgrades that they discovered testing for the 1456. They turned up a 1256 to test for the 1456 and where and what they beefed up are the same spots as the 10 received. Like I said before. The 10s had less drivetrain failures then the 14s.
  7. SD6788

    Early 1066 vs late 1066

    Been doing some reading and talking with an old district rep. He was telling me about how the later 1066 (73-76') was a lot more of a tractor than the early ones. Apparently the late tractors got a bit of a beef up after John Deere released the 30 series in 73'. We all know they changed rpm ratings but on the 10 they also changed a few bearings in the speed and range transmission. This was done to push the hp a little more than what they did early on. 135-140 was where most of them came off the truck. I have had a few of these tractors and I feel the black handled tractors did have a lot more snort to them then the gray handle early ones. What's your guys thought on this.
  8. SD6788

    5388 getting updated 😎

    This should be about the top project that redpower has seen. Were the 5388 panels actually made or just stickers on old sheet metal.
  9. SD6788

    IH 30 series Tractors

    One from last year. The 466 is as smooth and quiet as they come.
  10. SD6788

    IH 30 series Tractors

    Well it seems the rain doesn't want to stop. Its about enough to drive a man crazy! How about a good old picture posting session. Show us your 30-3688 tractors. It feels like this series is always over looked by the 50's. They actually were very nice to drive and had good reliability.
  11. SD6788

    Cast duals? Who runs them?

    How many of you guys run cast duals? I have only seen a few setups on 52 and 5488s. I am sure they got the heft to handle them but anyone run them on 56-86 series? Talked to an IH rep and he says they were available. He also said that they weren't needed because ih had enough working weight built into them.
  12. SD6788

    1086 vs 1486 - Same From Engine Back?

    IH knew they were at their max hp with these 2 tractors. It's kinda crazy but there were 1066s running 140-150 hp that had less failures then 14XXs. I also know that there was a run in 1973 where 1066s ended up with 436s engines in them because they couldn't keep up with production. Guess I don't know how that faired but I bet they were fine.
  13. SD6788

    1086 vs 1486 - Same From Engine Back?

    Guys. The 1086 and 1486 had the exact same 14" clutch. The brakes weren't any different in the 86 series. They went to wet brakes and the 8" became sufficient for the 14 final drive. I would bet most of the 10s ran 150 out of the factory. The 436 in the 14 had a little more torque and got pushed a little harder. I did calculations off the Nebraska tractor test and came out to the 10 and 14 pushing max torque of 172 I think. The ten ran 131 and had more torque rise than the 14 at 145. Can't remember my equation but both were at 172