Ya know Pete you and i both worked on I H tractors for a lot of years. around here we still have a bunch of older I h's still working for a living . I started seeing problems back in the early 80's with gas tractors. First it was a lot of plug fouling that looked somewhat like oil fouling but it was not . The one tractor that comes to mind that about drove me up the wall was a 641 ford that we did a complete major overhaul on with line bore decking of the block a total rebuild of crank and head both ends of the rods and OEM as per customer request parts wright from Canfield Tractor . When done it was run at the shop for a good 5-6 hours set to spec.'s and ran like new . I filled the tank with fuel out of my tank and it was running fine . Took the tractor out of the shop and parked it outside over night to see how it would start cold as it was in the teen's at that time Next morning i get to the shop and first thing was see IF the Ford would start , It started like summer and ran fine . Later that day i hauled it two miles to the customer and dropped it off and got paid for the job . Three days later i have one ticked off customer standing in the shop because his Ford would not start that morning . dropped everything and went to his mini Farm to see why we had a no start . YEp it would not start . It was 10 degrees and i am pulling plugs they were fouled . I put in a new set of Motor Crafts and it started but smoked but cleared out . Just figured he flooded it . He hauled is manure and parked it in the shed . Next day same thing fouled plugs , went back thru the carb to see if i screwed up . That was not it doubled checked everything . This went on for a week with a new set of different plugs . I could not figure out what was going on as it ran fine for him for two days then the problems started with it , he was not the only one with the same problems as i was at just about each of his neighbors with the same problems with the gas tractors of all colors . My buddy and i were there this one evening tryen to get this Ford running again and i said it has got to be your gas , so i went back to the shop and got ten gallon of what i was usen and drained what he was usen and put my ten in the ford. Ran fine FOR TWO DAYS and back to the same old thing when he put his FARM gas in it . And all he was doing was hauling two loads of manure a day from his massive herd of 12 cows he was milking with his mini spreader . So we took some of his gas put it in a bean can and threw a match to it , to the surprise of all standing there when the match went into the can that had been setting there while we tired to light the new SAFETY matches the match went out . To get this gas to burn we had to soak a old rag and light the rag then place it in the can of gas and it burned like a smudge pot . we tired the same with the gas i had and it flashed . we checked all that were having problems and it was the same . The difference was they were getting gas from the same supplier and i was not they were getting the cheap stuff where i was getting 93 . That spring the neighbor got a 766 gas and that was the first time we ran into the problem with it loosen power and trying to seize up . He was trying to plow with a set of 145 J D 4 x16 plows . When going down the hill it ran ok but turn and try to come back up the hill about half way she would start to miss , sometimes cough back and just plum die . When you would try and restart she was locked up . let it set for 10-15 min. she would restart and run fine so we thought . and the min. you tired to come UP the HILL in 4ht low with stick in high she would start to die and pull the crutch and get maybe 15-20 more feet and she would lock up . First we went thru the carb but found nothing . checked timing and it was dead on spec. went thru the valves they were a couple ths' out set them did change plugs as it did have D18's in it and dropped back to D15Y's , maybe a little help. but the problem was still there . at the time i had a late 706 same engine as Ronnie's 766 he was getting behind and i let him run my 706 with my fuel in it It was playen with them plows in first high . So we drained a half tank out and refilled with the 93 that i had and i took his 766 and hooked to my 710 4x16's and took it over ans started plowing with it i could pull a much heavier plow in 1st high with no loss of power or any sign of missing or bogging down or seizen . at the time we did not know the damage done by this but soon found out as the 766 was starten to suck oil .when that started it was not long before the first of many exhaust valves went to lunch and that was another problem that took awhile to get figured out and after a long talk with a man for Marion Ind. and seeing the Service bulletin that was about valve torchen and the use of oil that was not low ash . when we first pulled the head that is when we found the scoring of the sleeves and the damage to the top of the pistons above the top ring. Now that area above the top ring grove is .019-.020 smaller the the skirt are of the piston and according to the BOOK skirt to wall on new SHOULD be .0035 to .0045 clearance or RIBBON fit with x amount of pull on the blade . O Ronnies 766 w did a Clevit rebuild and just went the mic fit to each hole and did the head with the engine in chassy and new exhaust valves . Ronnie switched gas and oil and we had no more problems . I have lost track with out going back into records of the number of 706 gassers that i have bought from sales but there was not week that went by that i did not have atleast two setting on the lot to sell with one or two in the shop getting something done on them to make them ready to sell . My closest friends have one of the 706's that i bought and fixed up and they are in use each and everyday on dairy farms and one is just a play toy for the one guy . The one i sold to Bill R was the one that had the Org owners manual and that was when i fist saw the fuel rec. on them in black and white . But as for myself i have always run the hightest since i started driving . even back then where i worked we had GAS powered semi tractors and they were fed hightest 105 octane gas The B60 Mach that pulled the 50 Rogers lowboy got fed that way the old White Mustang got fed with it and the 549 I H 's got the same along with the 534 Fords. And so did my 56 Ford 292 T. Bird spec. with the dual quads and Isky 3/4 cam and until Eugen's 706 everything was fine Till he got that load of gas from a local fuel supplier that took not one BUT all 6 sleeves and pistons on a fresh engine with 35 hours on it . I stood behind my work but when i saw the new pistons looking like the ones i took out of Ronnies 766 i knew wright off what had happened and that is when we looked for a independent lab to test the gas and tell us for sure what was gong on . We found one in Columbus Ohio and for the small fee of 650 bucks they did just that . We DID NOT tell them who's gas it was or the octane , they told us and what was in the gas and what caused the melt down . Eugene still has a copy of the report and if i was as good on this magic box as i am fixen stuff and had a scanner i would put it on page by page . There are three or four of us that have made a living working on I H tractors and the rest of the guys on here just play with them and come running for answers but when you try and be nice they tell you you do not know what your talking about. And anymore i could really care less My feelings anymore about this is about as much a shooting a ground hog .
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Today's Featured Article - Maintaining Rubber Tires - by Staff. The broad use of rubber tires on farm tractors and machinery has resulted in a great saving in both time and operating costs since the time of steel wheels. There are, however, certain basic fundamentals in the care of tires that should be followed carefully if the owner is to derive maximum benefit from his or her investment. First and most important is to maintain proper pressure for the work at hand. Your best guide to proper inflation is the operator's manual or instruction book tha
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