valve seat cutter question

Ok, life got in the way and this got put way back on the back burner. I bought a cheap India made cutter and cleaned up the seats. They cleaned up pretty nice surprisingly except for one exhaust valve. I kept working on it and totally lost focus,once it cleaned up, it has a lot larger "land" (not sure what to call it) than the other valves. I had a spec sheet that i now can't find naturally, that i thought called for that "land" to be 3/64? Question is, if it's too wide what can i do to rectify my blunder? I have all new guides,valves,springs etc and ready to put it back together. On a side note. what can i use to clean the exhaust and intake ports 70 years worth of crud? I have die grinders i can use,
 
You can have a valve seat insert installed. That's expensive, very expensive.

Drop a couple of valves in the exhaust seats. If there isn't to much difference, I wouldn't worry about it.

Rotary wire brush to clean up intake and exhaust ports. The ports on engine that I have seen were never milled after the block was cast.
 
the valve should "seat" in the middle of the valve face, if it seats at the edge of the valve it will not last long and burn, you can try and find a larger valve if the seat is now to big and the valve face can be cut down to fit correctly, to replace the seat the block would have to be stripped down and machined for a new seat that is pressed in
 
Glen":2zlzgpfw said:
Hi,
If you grind valve seats that are pitted too much, the valve will be too low in the seat before the seat is smooth again.
The valve seats, which are part of the block, may need replacing with new seats, if they are pitted too much.
The shop has to cut the block, and install seats in the places they cut to the right size in the block.

Below is a page from the Cub service manual, showing how valves should fit in the seats. :)

http://www.farmallcub.info/manuals/gss- ... 001-24.jpg
Click to expand...


Not sure how i missed this ! Just the info i needed. Thanks

Thanks to all that replied
 
Do you have a Vocational school in your area, when I went at night for welding the automotive shop was always looking for things to work on. TJ
 
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