Posted by super99 on January 09, 2008 at 01:33:27 from (75.107.167.170):
I will give some background and then ask your opinions. I have a 70 gas that I bought from a dealer 12 or 15 years ago. It had sat in a fence row for years and then they got it running and traded it off and I bought it for $850. It seemed a little weak, but did what I needed it to do. Last few years, it got weaker and weaker till it would hardly start, I tore the head off and pulled pistons to do a valve and ring job, but the top ring grooves are burned out of both pistons. A friend did the head and it is good and ready to go. I took the block out and took to a machine shop to get checked out and it is OK and will bore out to .045 alright. This site has .045 overbore pistons for about $445 so I think I will order a set for it. I plastiguaged the rod bearings before I took them out, and they had .004 play in them. Machinist checked old bearings and said they were standard with .001 wear in them. I should be alright to put standard bearings back into it, shouldn't I? He said the cylinders had .025 wear in them. I think I should take the crankshaft bearings out and check them for wear and possible replacement. Should I have the crank turned down to next size bearing available? Would you take out the camshaft and have it checked? For no more wear than the rods show, I would think the mains should be wore the same, wouldn't they? It is going to need a new flywheel, the old one is cracked all over, but splines on crank are good. I'll be honest, I AM CHEAP!!! This is going to cost more than I planned on, but I want it to run so I can use it, and with the price of corn I guess this is a good time to spend the $$$. I didn't intend to have new everything in this old girl, but I will never be any closer than I am right now, What would you guys do? I am not concerned about being good as or better than new, I just want to run it till I die. I would use it to pull a 4 row planter and spray 65 acres and run auger, maybe take a 3 bottom plow to a plow day if they ever have one close enough that I can drive to it. Should I try to find a higher compression piston, or go with the standard .045 overbore? The rest of the tractor works ok, and with better rear tires, it should run as long as I will be able to use it. Your thoughts and questions please. Chris
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Today's Featured Article - When Push Comes to Shove - by Dave Patterson. When I was a “kid” (still am to a deree) about two I guess, my parents couldn’t find me one day. They were horrified (we lived by the railroad), my mother thought the worst: "He’s been run over by a train, he’s gone forever!" Where did they find me? Perched up on the seat of the tractor. I’d probably plowed about 3000 acres (in my head anyway) by the time they found me. This is where my love for tractors started and has only gotten worse in my tender 50 yrs on this “green planet”. I’m par
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