This Set Of Big Block Chevy Race Heads Needed A Lot Of Work! Liquid Nitrogen and Specialized Tools

You can learn more about the history of Rimac and the Rimac Tools Big Blue valve spring tester at: bit.ly/3GGAA4z A special thank you to Rimac Tools for partnering with us on this video, but more importantly a special thank you to Rimac Tools for being an essential tool in machine shops like ours around the world since the early days of the industry itself!

Man I would be like a kid in a candy store if I had access to the equipment you guys have there. Thanks for taking us a long.

Quality work, those angles is where the powers at, nice job blending and unshrouding. A lot of shops could take a lesson from this bright young man.

Great work, I can appreciate the work and clean shop plus the editing to boot!

Love getting new tools! Awesome work as always 👊

Pro tip : magnetize a pocket screw driver, put some lithium grease on the grooves in the valve stem. Use the magenetized pocket screw driver to put the keeper in place. The lithium grease will hold the keeper in place as you slide the pocket screw driver up and off the keeper.

Excellent. I'm glad that the damage wasn't deep enough to require welding.

I have been hanging for ages for a full video like this again. Brilliant work! OK, so how is the new shop coming along? We have not had much update for a long time.

Just a note to let you know the content you create is both inspiring and informative. Having been a dealership tech my entire life now in retirement I have revisited machining ( i hated it as a 12 year old being forced to work summers in the old shop) playing with the equipment my grandfather had left me when he passed 30 years ago. When he passed due to monetary and space constraints, I was only able to keep a few pieces. I chose to keep the Sioux seat grinding set the Sioux valve refacing machine a Vanorman 570 and a Vanorman seat and guide machine. All the equipment was stored to the best of my ability over the years. The last few years I have restored all to operating condition. I have also added a 1980 530 Vanorman I got cheap (completely burned obsolete electrical boards) after upgrading to modern vfd it operates perfectly. Thank you for the content and the information you create. It is truly inspirational.

This was my job when I worked at Hendrick Motorsports. We had a dedicated honing tank. Done everything from installing seats and guides to honing and grinding and finishing and assembling heads. I retired last year but man I really miss doing the work.

That liquid nitrogen process is exactly the process we used at Douglas Aircraft in Malton, Ontario, Canada to install bushings into the globe ends of the DC10 wing spars way back in 1968. We used the power table lift of the mill we used to bore the globe end hole to push the bushings in with the wing mounted on a sine table and held in the air by two gantry cranes, it was a long sucker. That nitrogen process worked like a charm.

Got my dad one for Fathers Day. Great gift idea!

Always enjoy these longer videos. Educational and entertaining 😎👍

Forget the valve guides. I want to see a video on how to make that icecream!

I wanted to say thanks for turning me on to those ez-lok thread inserts, I ended up having an intake manifold come in the day after I watched that video that needed one, it worked perfect and was a fun little project on the Bridgeport

In 1973 we rebuilt our first car engine-a 1959MGA. Although it was a comedy of errors, as we had little experience other than single cylinder motorcycle engines, we did prevail. A few years later, I jumped in with both feet in the machining trade. I’ve loved it for the last 41 years. Great job!

Those heads are a beautiful as any piece of art I've ever seen. (And I was once an art major)

I truly enjoy seeing you and your father taking so much pride in your work I bet your customers love you guys

Someone that is actually installing valve guides correctly! Bravo! Very awesome! You also are supposed to install seats like this, prevents them from dropping later.

Its good to see that you guys have the ability and the patience to basically nurse these "Well Used" aluminum heads back into service again. A lot of shops would have just said "Save your $$ and put that towards porting a new set of heads and move on. These are toasted " Its scary what there getting for new a new set of QUALITY BBC Aluminum heads today. And thats if you can even find a set. Then comes all the custom work to make them do what you need them to be able to handle. Be it, Natural Asperated, Blower or Turbo (multiple) charged today.