bowtie4.gif (2065 bytes) 1931 Chevrolet - Specifications Page 1
Carburetion
Carburetor
Float
Accel Pump

Ignition
Coil
Distributor
Spark Plugs

Valves
Adjustment
Timing

Fluids

Water
Oil
Fuel

Gauges
Oil
Temp
Amp
Gas

Wipers
Motor

Wheelbase
Length

Shocks
Seals

Flywheel
Ring Gear

Steering
Gear Ratio


Last Updated:  07/02/07

CARBURETION
Carburetor Carter - No. 150-S, Single barrel updraft
Idle Adjustment - 5/8 to 1 1/4 turns open; idle at 6 MPH, adjust in to make rich; Well Jet assembly - standard drill size 56 #(a)
Adjusts fuel flow up to approximately 18 mph. #(j)
Float Float Level - 3/4" measured from machined surface to top of float (while held upside-down) #(a)
Accelerator Pump Set plunger pin in hole marked "W" in pump arm to give longest stroke for cold weather.   Set pin in hole giving shorter stroke for hot weather driving. #(a)
"W" setting in pump arm for winter, "S" setting for summer, and "Center" setting for average conditions  #(f)
IGNITION
Coil Delco-Remy No 526-B #(a)
Bracket Mounting Bracket DR No. 1842364 #(a)
The original coil and bracket were all one unit.  The bracket was tack welded to the coil and it was not removable. The bracket listed above is for a later type of Delco-Remy coil which had a removable bracket.  This type of coil and bracket was a retrofit for 1931.  #(f)
Distributor Delco-Remy No. 633G, Firing Order 1-5-3-6-2-4 #(a)
Points Gap .018" to .024". 
Spark Plugs AC type G-12, Size 18mm, Gap .024" #(a)
The gap of .024" actually is the wrong gap for the 194 engine, especially when using the modern AC-C86 plugs.  At .024" gap the car will "pop" out the tail pipe at idle, however when the modern plugs are gapped to .040" the car idles smoothly with no popping, and the overall power is increased dramatically.  The same thing happens when the gap on the original AC-G12 plugs is increased.  When the spark plug gap is increased from .024" to .040", the timing should also be increased from the factory 12 degrees to about 18 degrees.  There is no 18 degree timing mark on the flywheel, so the 18 degrees is approximately when the 12 degree mark is just ready to disappear out of the timing hole on the advanced side.  Setting the timing here will also help to increase the power.  If the engine "pings" at this setting, then the distributor should be retarded slightly until the "pinging" goes away.  #(f)  
Ignition Timing 12 degrees BTDC ("UC" on the flywheel means "Upper Center" but it is equivalent to TDC) #(f)
A more recent opinion is to increase the spark plug gap to .035 or .040" and increase the timing to 18 degrees.  See here.
Lock Briggs & Stratton, Series C1501-1700, Key blank 42106 #(a)

VALVES

Adjustment

With engine at normal operating temperature, adjust Intake = .006", Exhaust = .008" #(a)
Timing Inlet valves open 4" after top dead center.   The flywheel is marked for No. 1 cylinder. #(a)
Valve Springs New design with variable pitch between coils.   Open pressure 80 lbs, closed pressure 44 lbs. #(b)

HEAD

Head Bolts Proper torque for the head bolts on a 1932 Chevrolet is 75 pounds. Be careful on original bolts however, because you could snap them off due to their age!  #(f)

FLUIDS

Water Capacity 12 quarts; radiator flow = 13.9 gallons per minute #(a)
Oil Capacity 5 quarts #(a)
Fuel Capacity 10 gallons; Mechanical Pump = AC Type B No. 855235 #(a)
Pump was a AC Type 405 pump without an air dome. (1932 used the same pump with an air dome). #(f)
Fuel Filter in glass bowl
     Recommended:  Napa FIL 3039.  Approx $6

GAUGES

Oil Oil Pressure gauge = AC No. 858680 #(a)
Temp Water Temp gauge = AC No. 859340 #(a)
Amp Ammeter = AC No. 857053 #(a)
Speedometer Speedometer = AC No. AC (Type H) No. 849010 #(a)
Gas AC Electric #(a)

WIPERS

Motor Windshield Wiper - Trico #(a)

WHEELBASE

Length 108 9/16 #(b)

SHOCKS

Seals Federal Mogul No. 254287, 0.875 x 1.250 x 0.250 #(e)

FLYWHEEL

Ring gear Finished inside diameter .020-.030 inches smaller than the shoulder on the flywheel.  Expand steel ring gear by heating to 400 degrees to permit assembly. #(b)

STEERING

Gear Ratio 12:1  #(b)

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Bellevue, WA, USA