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Case Tractors Discussion Forum
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The right tool amkes the difference

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Bret4207

07-16-2007 14:22:38




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I've been working on my 811B gasser. It had 1 bad exhaust valve in each head and I finally got around to taking it apart and sending them out for work. Meanwhile, back at the ranch, I decided I'd re-ring it as long as the heads were off. This isn't going to be a primo restoration, just a work tractor. There was a considerable ridge in each cylinder and I broke my neighbors ridge reamer trying to get at them. I bought a new ridge reamer and it had the same issue as the old one I broke- the cutter didn't extend down past the ridge enough to cut the whole ridge out. I was to the point of checking on sleeve kits, but my,my,my they are expensive. I mentioned this to a guy at the parts store/rebuild shop where I bought the ridge reamer. He said, "Try mine". Well his is a Lisle that climbs a screw as you turn the reamer. Viola! Less than an hour and all 4 cylinders are ridge free.

I know I should spend the $1100-1200.00 and re-sleeve it, but it holds great oil pressure and it's just a chore tractor so I'll do some measuring and see if .010 over rings will fit. If it looks close I'll stick with standard.

Sure is nice to find the right tool when you need it.

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Jiles

07-17-2007 07:32:33




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 Re: The right tool amkes the difference in reply to Bret4207, 07-16-2007 14:22:38  
Was you trying to cut all the ridge with one pass?



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Bret4207

07-17-2007 17:41:41




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 Re: The right tool amkes the difference in reply to Jiles, 07-17-2007 07:32:33  
Nope, the cutter for the ridge reamer wasn't long enough to hit all the ridge. The way the engine is designed the top ring stops about 1/2-5/8" from the deck. The ridge reamer cutter would only go down about 3/8" so it wasn't cutting all the ridge. The Lisle reamer lets you set it well below the ridge and as you turn it, it climbs and cuts the ridge. Took about 3 passes for each hole.



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Doc Larry

07-17-2007 04:08:10




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 Re: The right tool amkes the difference in reply to Bret4207, 07-16-2007 14:22:38  
Did you check taper in the bores? You might check into the cost of boring the sleeves out .010, maybe that would be less than buying new ones....just a thought.

Larry



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RN

07-16-2007 15:02:45




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 Re: The right tool amkes the difference in reply to Bret4207, 07-16-2007 14:22:38  
Sometimes can find 'service' rings- about .005-008 over standard and a .002 thicker. Meant as replacement for partially worn cylinders, first re-ring. End gap is another thing to check- .010 rings with a groove shim may be tighter gap than .003+- per inch bore, file one end and check again. RN



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