Looking for Used Valve Seat Grinder Setup

bulletpruf said:

That’s problem #1 - the exhaust valve seats are 37.5 degrees. Have not found stones ground on that angle yet.

It would cost me $400 or so to get set up with Neway cutters for these heads but I can get cutters with the correct angle.

There seems to be three groups of interchangeability in the different stone grinders so that is something to watch. Sioux seems to have the strongest following.

Thanks

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I have the wheel truing fixture that uses a diamond tipped tool. You also can use it to change the angle of a stone. Typically you need 3 different stones so that you can raise or lower the seat contact area to match the center area of the valve face. Also some seats are spec'd at .5 degree difference to allow some wearing in and keeping a smaller contact area. I believe its supposed to keep the area cooler. I am not a 100% certain how mission critical it is though. Also you have to figure out what diameter stones you need because the pocket area of the head will only allow a certain size to fit in. And typically the size difference between the intakes and exhausts work out that you need different diameter stones for them, basically meaning you will need 6 different stones. I haven't done any diesel engine work, but from looking at the Goodson Tool site over the years I see that they have different stone composition for the super hard seats used in diesel engines. The $400 offer ^^^ seems like a great deal even paying the shipping from one side to the other.

I have the wheel truing fixture that uses a diamond tipped tool. You also can use it to change the angle of a stone. Typically you need 3 different stones so that you can raise or lower the seat contact area to match the center area of the valve face. Also some seats are spec'd at .5 degree difference to allow some wearing in and keeping a smaller contact area. I believe its supposed to keep the area cooler. I am not a 100% certain how mission critical it is though. Also you have to figure out what diameter stones you need because the pocket area of the head will only allow a certain size to fit in. And typically the size difference between the intakes and exhausts work out that you need different diameter stones for them, basically meaning you will need 6 different stones. I haven't done any diesel engine work, but from looking at the Goodson Tool site over the years I see that they have different stone composition for the super hard seats used in diesel engines. The $400 offer ^^^ seems like a great deal even paying the shipping from one side to the other.

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Post by Sawdoktor » Sat Jul 31, 2010 10:23 am

With that in mind, I started searching and sure enough the Army has a tech manual for my valve grinder as well. I couldn't readily find a free download of the manual, but I did locate a collection of Army manuals for sale which includes the one I need.
Sourcing actual replacement parts will be a separate exercise, but at least I have the operating instructions, machine specs, exploded views and parts lists to work with now.
gerry

Thanks everyone for your suggestions. I think I found exactly what I need for now. Several years ago, I got a US Army tech manual for my Southbend 10K which is actually the factory operating manual & parts list with an Army cover attached.With that in mind, I started searching and sure enough the Army has a tech manual for my valve grinder as well. I couldn't readily find a free download of the manual, but I did locate a collection of Army manuals for sale which includes the one I need. http://www.combatindex.com sells manuals for just about everything the Army has ever used. The set I got includes 206 manuals for shop tools and machines including parts lists...lathes, mills, grinders etc. It sells on CDRom for $17 plus $5 shipping. I may never have to locate another manual again! http://www.ci-datastore.com/workshop-eq ... tools.html Sourcing actual replacement parts will be a separate exercise, but at least I have the operating instructions, machine specs, exploded views and parts lists to work with now.gerry

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