Valve facing, Seat Grinder... Learn me...

Ok.. so in a stroke of luck I picked up one of these..

At first I thought about cleaning it up and selling it.. but playing around with a junk valve.. pretty much everything seems to run true.. I can face a valve.. take it out.. chuck it back up.. and the machine seems to be spot on... the only part I have any concerns about is the side where you face the tip of the valve.. There seems to some amount of play in that assembly.. but given the nature of how it is constructed I assume some play is 'normal', and the operation isn't a nearest ten thou' operation anyway...

I even have all the stuff to grind seats.. ( minus the stones..)

And as far as selling it.. It seems they are bringing a decent amount.. (It is a Sioux 680) and I could make enough of a profit to pay for a valve job or two... But heck.. Even with having to buy a couple parts.. two or three heads.. and this baby is free.. (based on what it would bring.. not what I paid for it ) and will last me a lifetime..

So the questions are this..

What seat grinding stones should I buy? (most of my toys are 2.2 turbo mopar stuff)

I am tempted to just keep it simple and stick with basic valve job stuff.. Following the service manuals, that should be no problem. But why not grind a three angle? I know most shops these days cut multi angle jobs.. but grinding leaves a better finish anyway.. correct?

and what about backcutting the valves?

I have had it done... but never done it.. What sort of angle works best?

Speaking for now about freshening up old heads I have around just to make nice stock rebuilds.. I have just lapped valves and picked my 'best' head for way to long putting stuff back together... Not anymore

Any advice? What should I know?

Stone you really don't have to many choices theses days "Ruby Red" is about all thats available to cut hardened / unleaded seats. Goodson will have them in various diameters and angles. Did you get the stone dresser too? if not you'll need one. I've had a Blue Point version for 20+ years with BD vibocentric seat grinder. Haven't touched it in 10...

Yes I have the stone dresser...

I found this selection.. and prices seem decent enough?

http://www.cylinderheadsupply.com/valve-seat-grinding-seat-grinding-stones-sioux.html

I fear this is going to lead to "needing" tools to replace seats... and certainly going to need to clean up/replace old valve guides.. but yeah.. uh...

In reply to ronholm:

Cylinder head supply is who I used for stones and a new dresser when I borrowed a B&D.

The hard part is finding collets and pieces for modern import 6-8mm valve stems. The old machines are designed for 3/8" stems or something. They were HUGE.

I made my own adapter bits on the lathe. It was my first full valve job. They seal very well. Not sure if the standard 3 angles I used are optimal for my motor though.