1930 dictator valve clearance

[pvstudebak]

Hi all;

Working on 1930, 221 ci. dictator 6. Some of the valves seem too close, some with excessive clearance. Does anyone have the specified clearance for the intake and exhaust valves?

thanks Virgil

[Guest stude8]

I have a 1925 to 1928-1/2 manual that says valve <span style="text-decoration: underline"><span style="font-weight: bold">stem</span></span> clearance for parts in service .004 int & exh.

Tappet clearance hot for cars Int & Exh is .006.

Stude8

[montrose]

Tappet clearance from Studebaker Service Bulletin 38 A:

Dictator 8 Exhaust Intake

Hot ---------- .006 .004

Cold---------- .007 .004

Joel

[montrose]

Woops, you did say you had a Dictator 6 and not an 8. Here is the information for the 6:

Tappet clearance from Studebaker Service Bulletin 38 A:

Dictator 6 Exhaust Intake

Hot ---------- .006 .006

Cold---------- .007 .006

The cold setting is considered room temperature or 70 degrees F while the hot temperature is considered approximately 150 degrees F or after the motor is thoroughly warmed up.

And answering your other question, the parts books shows the 6 and 8 as using the same valve springs.

Joel