Hangar Capability Upgrade: Sioux 645 Valve face grinder.

Builders:

New addition to the hangar tool collection, an important upgrade in valve refacing. Old school equipment like this is capable of very good work, and you can buy parts like grinding wheels for them from a number of sources. This is an indication that shops that need accurate work, still get it from classic equipment.

.

This refaced is older than I am. The fact it can grind valve faces to increments of 1/4 of a degree, and it is fully adjustable, allows the initial set up of the seat/face angles in a valve job to address factors like aircraft engines having to run at times of 100LL fuel, which leaves deposits, that are better dealt with by slight angular differences between the surfaces.

.

I learned a lot about precision valve work when I was 19-21 years old, working under the instruction of Jack Puhack, at Speed World, 1400 Stuyvesant Ave, Irvington N.J. …….. I used a valve refacer identical to this one.

.

.

Above, the Sioux 645 sitting next to my refurbished Sunen LBA-650. Both of these tools are part of my long term goal to have nearly all of the machine work in rebuilding Corvair engine components in house.

.

William

.

Leave a Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.

%d bloggers like this: