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Farmall A Pistons/Rings

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tyler cohrs

09-05-2006 16:09:33

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Hi on my farmall A when it's running it smokes blue and blows some oil from the exhaust. I'm thinking it's the rings, and i want to put new pistons and sleeves in. Just want to know what I should put in to make it have alittle more power?

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ddg

09-05-2006 16:59:20

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Re: Farmall A Pistons/Rings in reply to tyler cohrs, 09-05-2006 16:09:33

Might as well take the head in and get it milled, & boiled out too. Have some new seats put in, some new valves, guides & maybe springs. Have them grind a new contour on the rockers where they contact the valve stem if it needs it. Since the pan's off, might stick in a new set of rod bearings. I did all this plus new mains on mine last year. I also put a new gasket in the oil pump, and hosed out some sludge that had accumulated in the block.

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magman

09-05-2006 16:39:08

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Re: Farmall A Pistons/Rings in reply to tyler cohrs, 09-05-2006 16:09:33

Yes tyler By putting The larger pistons and sleeves you will be making her into a SA. And they are actually easier to get and about the same pice as the stock size. If in the future you would like a price from me On my parts just yell hey Magman. JON

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Red Dave

09-05-2006 16:54:34

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Re: Farmall A Pistons/Rings in reply to magman, 09-05-2006 16:39:08

Magman, that is just not accurate. Pistons and sleeves will NOT make an A into a Super A. The Super A had the exact same 3 inch piston X 4 inch stroke that an A had. 113 cubic inches.

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magman

09-05-2006 18:40:50

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Re: Farmall A Pistons/Rings in reply to Red Dave, 09-05-2006 16:54:34

I AM SORRY, I did not mean that thats all it took to make a SA I know there is more involved in a super than just pistons. I was just saying about making it from a 113 to a 123. you can do that with the pistons and sleeves cant ya. JON

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magman

09-05-2006 18:54:05

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Re: Farmall A Pistons/Rings in reply to magman, 09-05-2006 18:40:50

Well what I just said would be wrong also. Wow I might as well quit while I am behind. OK this is what I am talikng about going to the 3 -1/8" piston. And getting more power there I know that one is right. LOL or it better be.and what was a SA 123 stock 1-1/4" bore? actually i am trying to figure out what fits in all those motors right now becuase I got a guy thats asking about it. I take it that a stock SA 123 sleeve will not fit in a Stock 113 block? JON

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Red Dave

09-06-2006 04:55:42

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Re: Farmall A Pistons/Rings in reply to magman, 09-05-2006 18:54:05

And you are going to be selling parts?

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magman

09-06-2006 06:40:30

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Re: Farmall A Pistons/Rings in reply to Red Dave, 09-06-2006 04:55:42

Yep Sure Am, And doing pretty darn good if I do say So My self. JON

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Jim Becker

09-05-2006 19:13:08

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Re: Farmall A Pistons/Rings in reply to magman, 09-05-2006 18:54:05

Jon,
What Red Dave is trying to tell you is that the Super A had the exact same 113 ci engine with 3" cylinders that the A had.

Actually, part way through Super A production they changed. Later Super A engines used the 123 block with sleeves that matched the outside profile of the 123 sleeves but still had a 3" bore.

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Red Dave

09-05-2006 16:27:25

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Re: Farmall A Pistons/Rings in reply to tyler cohrs, 09-05-2006 16:09:33

It certainly sounds like you have a problem, but I'd suggest a compression test to confirm it before you sink a lot of dollars into it.

For a Farmall A, you can put 3-1/8 pistons and sleeves in it. That is 1/8 inch oversize. You can also get those in a high compression (stepped head) piston. The IH brand name for them is Fire Craters (if I remember right). Several other manufacturers have their own version of them.

I used Clevite 3-1/8, stepped head pistons in my B (same engine) with good results.

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Charles McNelly III

09-05-2006 19:11:05

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Re: Farmall A Pistons/Rings in reply to Red Dave, 09-05-2006 16:27:25

Red Dave, Do you remember how tall the dome was on the step head pistons you used? Was it taller then 1/4"? How high is the compression? Charles

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Red Dave

09-06-2006 04:49:17

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Re: Farmall A Pistons/Rings in reply to Charles McNelly III, 09-05-2006 19:11:05

The dome on mine are about 3/8 inch high.

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HENRY E NC

09-05-2006 20:43:55

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Re: Farmall A Pistons/Rings in reply to Charles McNelly III, 09-05-2006 19:11:05

does all this require splitting the A and removing the crank? I have removed and had the head and valves all redone in the local shop and now must get the pistons and sleeves out. I have been told that I have to split the tractor to get the crankshaft out to be checked.

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Red Dave

09-06-2006 04:53:26

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Re: Farmall A Pistons/Rings in reply to HENRY E NC, 09-05-2006 20:43:55

I guess you could get the pistons and sleeves out without removing the crank, but that would be an awful lot of work to go to just to do a half-assed job. How would you know if the rod & main bearings fit?

Yes, you have to split the tractor to get the crankshaft out. Splitting one of these is not too hard to do though.

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