I shared ti's video with my buddy Randy Stephens owner of Stephens and Hull Automotive in Cecil Ohio. He has done Engine machine work for about 40 years on anything you can think of. Now builds alot of race engines mostly circle track. He does have a Dyno. He said what you are doing looks good He has used that machine along time ago. He said IDI stands for Ingenious Devices Limited. Made I Canada until Winona bought them out.

He also just told me that Sunnen bought out thier valve refacers but he didn't care for them. He it picky and knows alot about equipment. I you ever have any questions about anything. Let me know. Thanks for the video

Hey Billy, great video! Can you make one to show us the most common sizes of drill / reamer guides , and tapered washes / cones , you use for Ford heads? I have an IDL but no tooling so I’m at a loss for what exact tooling I’d need for mostly Ford heads? Thanks . Also what speed do you set your machine at?

Now he also tells me Sunnen quit making the valve refacers and copied buy Comec from Italy. He still doesn't like them.

I need to ask i know you are a cleveland expert, valvespring outer diameter on a 4v iron clevo head i have a solid roller 586/604 lift just wondering what you suggest thank you