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Singing the JD70 no power Blues!

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ToddF

07-30-2001 14:42:15




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My brother outpulled me by 20' last weekend with his 560; he spun out and I powered out in low gear. I know that sounds bad but it is better than I have been doing because he has been beating me by 40'. I put a new wires, points and condensor on and drained the oil out of the air cleaner. The air tube before the oil bath had a build up of crud around the inside that reduced the intake cross area by at least a 1/4". I turned the power valve on the carb out almost all the way, it was a quarter turn from the stop, is that normal? This was determined by trial runs hooked to the 4430 on the gravel driveway. Talk about a mismatch. Now here is my real question, how big can the block on this JD70 be bored, can it be sleeved, and who sells sleeves, pistons and what not to get it done? What about connecting rods, will the stock ones work, if not, why not and what is the solution? Actually maybe there are a couple more tuning tricks to try before going overboard here. At the moment both tractors are entirely stock.

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Gman

08-01-2001 19:37:44




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 Re: Singing the JD70 no power Blues! in reply to ToddF, 07-30-2001 14:42:15  
Todd is your 70 a Gas engine or an all-fuel? Gman



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ToddF

08-02-2001 06:05:13




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 Re: Re: Singing the JD70 no power Blues! in reply to Gman, 08-01-2001 19:37:44  
70 Gas. I forgot to mention above that I swapped a piece of 4" straight pipe for the stock muffler in addition to draining the oil out of the air cleaner. Is it generally acceptable to pull the stock air cleaner assembly off and replace it with a high flow paper element in stock classes?



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TP from Central PA

08-02-2001 09:28:33




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 Re: Re: Re: Singing the JD70 no power Blues! in reply to ToddF, 08-02-2001 06:05:13  
I don't know if the do that on the Green tractors but on the Farmalls it is an exceptable practice, I never got into changing air filters as it ruins the tractors appearence and the paper jobs wouldn't last a day in the field.



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Farmall43

07-31-2001 23:22:11




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 Re: Singing the JD70 no power Blues! in reply to ToddF, 07-30-2001 14:42:15  
Where are you at? At our club rules are stricly enforced and yes to the detriment of the green guys ( green with envy) we can use our T/A. It is after all STOCK equipment installed at the factory. Any ways the rest are right about one thing the 70 is geared way to high to be pulling with out engine mods. If you want to spend the money you can make it go but other than that buy yourself a nice SMTA,400,450,560. Good luck and good pullin'

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TP from Central PA

08-02-2001 09:33:49




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 Re: Re: Singing the JD70 no power Blues! in reply to Farmall43, 07-31-2001 23:22:11  
I agree he needs a SM-TA or a 400,450, or even better a 560, yet I have always like the awesome styling and look ot the JD 60 and 70- especially the JD 70D with a nice CHROME PIPE as a muffler replacement! Even if his 70 doesn't take 1st place home it is still a VERY COOL TRACTOR!!!



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Greg H.

07-31-2001 09:57:13




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 Re: Singing the JD70 no power Blues! in reply to ToddF, 07-30-2001 14:42:15  
I've never seen a 70 go out past 225 without powering out on a sticky track. I have however seen several 620-630, and 720-730 crawl on out past some pretty hot tractors in the 7500 and 9000 pound class. I guess it's that 1.5 mph first gear that keeps them going. I guess you could be just another chicken Sh** tractor puller and poke and stroke your prized old iron. You'd pull alot better, but at what cost to your tractor. Or be like the rest of us who pull stock, and just be happy when you get alittle payback for placing. anyway good luck. Greg H.

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jim funk

07-31-2001 09:32:01




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 Re: Singing the JD70 no power Blues! in reply to ToddF, 07-30-2001 14:42:15  
i have a john deere 70 and planed to pull it everyone in my famly loves john deeres we live on a 200 acre farm and farm close to 1000 acres but any way i got my 70 and first thing i did is paint it then new tires and that wasa it i took it to a local antiqe pull and putted out in 1 st gear so i turend a round and did the same thing on the other side i week later ther was a transfer pull i tried in 2 and didnt make it past 75 feet so i went back and put it in first and got 123.???? after i pulled are frend that has a johndeere a and g and 50 said that the johndeere 60&70 wernt ballanced right for pulling he said that farming there nice and another friend said they dont have enough top end speed curintly now mine is for sale and i own a farmall m&400with ta &560 diesl and there all beter than my old jd

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al

07-30-2001 22:10:44




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 Re: Singing the JD70 no power Blues! in reply to ToddF, 07-30-2001 14:42:15  
People claim 10+ hp by knocking out the divider casting inside the intake manifold that seperates the two barrels of the carb. This was said by two stroker 70's though.



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G Taylor

07-30-2001 20:09:44




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 Re: Singing the JD70 no power Blues! in reply to ToddF, 07-30-2001 14:42:15  
What class are you pulling in? A 70G rowcrop with 15.5x38 Firestone 23 degree tires is a tough contender in the 6500 lb class. Any heavier than that requires more tractor as the 2.5mph 1st gear is pretty fast, works great in the low gear only stock classes where everone else is down at 1 to 2 mph. What is the HP of the IH 560 what was his ground speed & tire type?



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ToddF

07-31-2001 09:11:54




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 Re: Re: Singing the JD70 no power Blues! in reply to G Taylor , 07-30-2001 20:09:44  
We were in the 7500# class. The other options were the 5500# or 9500#. I sit at 6200# bare, so I need to start a diet to get to the 5500#. I have 14.9 x 38 23 degree tires that are brand new but mismatched (I believe a Goodyear and a Safemark), they seem to work well together so far, maybe with more power I'll have to remedy that though. The IH560 we had on the dyno at 80 Hp. The book we had claimed it to be 58 Hp, to the best of our knowledge it is completely stock, other than turning the fuel up on the pump some. He pulled in 2nd gear, the TA ahead didn't quite have it, but when he pulled it back to prevent stalling she came back to life and went another 15-20' before spinning out. He has a set of 15.5 x 38 firestones F&R that are 75-80% used up. Other pullers seemed to think the track had a lot of bite. I haven't done it enough to really know, but like I said, I ran out of power.

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G Taylor

07-31-2001 13:47:22




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 Re: Re: Re: Singing the JD70 no power Blues! in reply to ToddF, 07-31-2001 09:11:54  
Can't win if you over match your tractor & compete in to heavy a class. A 58HP 720/730 diesel is a match for the 560 stock to stock. The 70 is 50HP on the pulley & 44HP on the drawbar. As far as modern options & usability compare the 560 to Deere's manufactured in the same time period. The 14.9x38's are taller than the 15.5x38's & will make it even faster. Dyno the engine & rebuild it if worn, use LP pistons & intake manifold if you have it apart plus a cam from Robert's.External mods for now, hollow out the muffler & have Albert dry filter convert the aircleaner. Stock engine will spin out on any track in 1st gear with 15.5x38's.2nd gear is way too fast for pulling. Even with the mods listed the 7500-8000 lb class will be max in 1st gear.

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TP from Central PA

07-31-2001 13:31:35




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 Re: Re: Re: Singing the JD70 no power Blues! in reply to ToddF, 07-31-2001 09:11:54  
Hey Todd where are you from? In my area Us Farmall Guys(Yes I bleed and Breathe red)aren't permitted to use the "TORQUE" or TA. I wish I could participate in a pull where the "TORQUE" was permitted to be used. We can use them here as it gives us and edge over everyone else. Boy, if I could pull my M-TA and use the "TORQUE" I would walk the tractor and sled out of the park together!!!!



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ToddF

07-31-2001 15:03:23




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 Re: Re: Re: Re: Singing the JD70 no power Blues! in reply to TP from Central PA, 07-31-2001 13:31:35  
Oneida County Boonville Fair in central NY. Near as I could tell any rules that existed were not enforced, and the couple of guys at the driver's meeting before hand that piped up were told to quit their belly aching. I pulled against the same tractors that hung around and pulled in the open class later that night, thats no joke! There were 21 tractors in the 7500# class in the afternoon, and 7 in the 7500# open class that night, 6 of them had pulled in the afternoon class. I haven't been to many pulls yet, maybe they do a better job of enforcing rules other places.

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