Valve Seat inserts

[8EL]

Originally Posted by 8EL

I have a Sioux valve seat ring cutter that I have not used for years, along with the valve seat grinder. As I recall you could buy different cutters, standard and over-sized from the stated nominal size. I have not looked to see if they are still available or if Sioux is even still in business. Makes you feel old when you out lived the life of your tools.....

Anyway how close do you think you are coming to the water jacket in the block going .010" deeper than the insert thickness? Does anyone know how much room we have here to the water.....Hate to find out the hard way, maybe someone else has??? Probably plenty of room but that nagging little question always arises anyway.......

Forgot to mention I used to use liquid Nitrogen (boils of at -320 DegF at sea level) to chill the inserts and they would drop in mostly on their own. Liquid carbon dioxide would probably work and is not as cold about -80 DegF so is a little safer to handle.....But either one will immediately cause frost bite or freeze your eyeball....wear a face shield Bubba.....

[History]

Originally Posted by 8EL

Forgot to mention I used to use liquid Nitrogen (boils of at -320 DegF at sea level) to chill the inserts and they would drop in mostly on their own. Liquid carbon dioxide would probably work and is not as cold about -80 DegF so is a little safer to handle.....But either one will immediately cause frost bite or freeze your eyeball....wear a face shield Bubba.....

We had a dairy farm and my dad did artificial insemination and we had a tank of liquid nitrogen, my brother and I would put different things in it to see the results . Rubber hoses after being dipped would be like ice in seconds and shatter when struck on the floor. I just watched a bus/motorhome video where the mechanic was using it to install bearing races in rear hubs on a large provost. He had a what looked like a baking pan placed in closed cell foam and would pour the liquid over the large race and it would boil, when it stopped boiling the race would free fall into its seat and as it warmed up was solid tight. Really cool stuff.

Forgot to add,,,, he would pour the stuff back into the storage bottle and reuse until it wouldn’t work anymore. I can’t remember the shelf life of the stuff or if I ever knew it.