Tool Identification?

[Guest Crockett]

Hi Folks:

A new user here. I am trying to identify a tool that belonged to my grandfather who was an auto mechanic from the 40's to the 60's. I am pretty sure it is a valve seat cutter but that's about all I know. Specifically I would like to know the following;

- Who made it?

- When was it made?

- Was it hand powered?

- Does it have any value?

- How was it used?

 

If it is any help the cutters have the following etched on them "CR ENGP or R CO. CEDAR RAPIDS, IA

 

Here are some pictures. There is a second set of pilot shafts under the top set. The dial indicator has Starrett trademark.

 

Any info would be greatly appreciated.

[Owen_Dyneto]

Valve seat pilots and cutters.  The correctly sized pilot was selected to fit into the guide and then the correct size and angled cutter used to cut the seat.  Nice for historical purposes but more modern high speed stone seat grinders do a superior job.

[jan arnett (2)]

As you said you have a set of valve seat cutters and the long items are the ends that fit in the guides.  These were used as long as engines have been around and are still used.

[jan arnett (2)]

The ones you have were turned by hand and you have the handle in your box.

 

[Rusty_OToole]

Pro tip. If you decide to use them put a piece of newspaper between the cutter and valve seat. This prevents chatter and makes a smoother job.