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Tractor Talk Discussion Forum

Valve Guides.

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Ken Farmall

02-27-2006 17:28:54




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I have a Farmall H, that is blowing oil out of the exhaust, I want to put new rings and valve guides in, what do I need to pull and replace the guides in the head? The tractor has run good for two years, but did smoke, but no knock, I am going to replace the rods and mains, rings and guides. Thanks for your help. Ken.




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retired farmer

02-28-2006 21:25:52




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 Re: Valve Guides. in reply to Ken Farmall, 02-27-2006 17:28:54  
If you don't know what you need to remove the guides, you would be better off to take the head to a qualified machine shop and have them do it. They can magniflux the head and check it for cracks and make sure the seats are ok and grind them. It will save you a lot of headaches. I have done a couple of Int. heads and a machine shop has saved me a lot of time and money.



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Bob

02-27-2006 19:11:29




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 Re: Valve Guides. in reply to Ken Farmall, 02-27-2006 17:28:54  
You need a "valve guide driver" to remove the old guides, and install the new ones. If you do not want to buy one from an outfit such as KO LEE or GOODSON, they are easy to make in the lathe.

However, do you have a valve seat grinder? The seats (if salvagable) will need to be ground to make them concentric with the new guides.

If you do not have a valve seat grinder, it will be money well spent to simply have a machine shop install the guides, then do a complete valve job.

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RustyFarmall

02-28-2006 08:38:10




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 Re: Valve Guides. in reply to Bob, 02-27-2006 19:11:29  
I took the head from my M to the local machine shop to install new guides, I don't remember now what he charged me, but I think it was well under $50? Maybe only $25 to $30. I thought it was well worth that, considering the fact that if the head had cracked or broken while in his shop, he would replace it.



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