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  • engine conpression

    hello again

    does anyone have an idea of the real conpresion of a 36 dictator 3a 6 cylinder...


    thanks mike[8D][8D]

    http://i219.photobucket.com/albums/c...e/HPIM0572.jpg

  • #2
    It's a low compression engine,about 6.3 to 1.

    63VY4 Leakin' Lena Hagerstown MD

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    • #3
      what is that in pounds

      http://i219.photobucket.com/albums/c...e/HPIM0572.jpg

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      • #4
        Here's some slightly later spec's, but most of them should be similar...
        source: http://www.secondchancegarage.com/public/445.cfm
        ENGINE SPECS

        1947 Studebaker 226 Six Engine Specs
        GENERAL SPECIFICATIONS
        Model Designation: Commander 6: 14A
        Wheel base: 119 (on Land Cruisers, 123")
        Valve Location: In block
        Bore and Stroke: 3-5/16 x 4-3/8
        Piston displacement, Cubic Inches: 226.6
        Compression ratio: 6.50
        Maximum Brake Horsepower: 94 @ 3600 RPM
        Maximum Torque Lbs.Ft. @ RPM: 176 @ 1600 RPM
        Normal Oil Pressure Pounds: 40
        TUNE UP SPECIFICATIONS
        Spark Plug Make: Champion J9
        Spark Plug Gap, Inch: .025
        Firing Order: 153624
        Ignition Timing: IGN on Vib. Damp.
        Engine Idle Speed, RPM: 500
        Cylinder Head Torque Lbs.Ft.: 83
        Compression Pressure & Cranking Speed: 105 Min.
        Voltage & Polarity: 6 volts, positive ground
        PISTON AND RING SPECIFICATIONS
        Fitting Pistons with Scale:
        Shim Thickness to use: .002 (1 inch wide feeler);
        Pounds Pull on Scale:: 15 to 20
        Ring End Gap: (Fit rings in tapered bores for clearance shown in tightest portion of ring travel.)
        Compression: .009
        Oil: .009
        Clearance in Groove: Compression: .002-.0025; Oil: .0015-.002
        Wristpin Diameter, Inch: .8741-.8745
        VALVE SPECIFICATIONS
        Operating Clearance:
        Intake: .016 Cold Exhaust: .016 Cold
        Valve Seat Angle, degrees: 45
        Valve Timing: (BTDC = before top dead center; ATDC = after top dead center)
        Intake opens: 15 degrees BTDC
        Exhaust Closes: 10 ATDC
        Valve Spring Pressure Pounds at Inches Length:
        Inner Spring: 54 @ 2-3/32
        Valve Stem Clearance: Intake: .0015-.0035; Exhaust: .0015-.0035
        Clearance for Timing Intake: .020
        ENGINE BEARING SPECIFICATIONS
        Connecting Rod Bearings:
        Journal Diameter, Inches: 2.18675-2.18775
        Bearing Clearance, Inch: .0005-.002
        Rod End Play, Inch: .005-.009
        Rod Bolt Tension: Lbs.Ft.: 50-55
        Main Bearings:
        Journal Diameter, Inches: 2.4995-2.5000
        Bearing clearance: .0005-.0025
        Shaft End Play: .003-.006 (Thrust on front bearing)
        Main Bolt Tension: Lbs.Ft.: 90-95
        CAPACITY DATA
        Cooling System:
        Without heater: 13 quarts
        With heater: 14-1/2 quarts
        Fuel Tank: 17 gallons
        Engine Oil: 6 quarts
        Transmission: w/out overdrive: 2-1/4 pint; with overdrive: 3
        Rear Axle: 3 pints
        AUTO-LITE DISTRIBUTOR SPECIFICATIONS
        Distributor part number: 1GC-4802 (distributor rotates counter-clockwise when viewed from top)
        Cam Angle, degrees: 39
        Breaker Point opening, Inch: .020 (plus or minus .002)
        Condenser Capacity: .20-.25 Mfds.
        Breaker Arm Spring Tension: 17-21 Oz.
        Centrifugal Advance: (degrees at RPM of distributor)
        Advance starts: 1 degrees @ 500
        Full Advance: 10 degrees @ 1400
        Vacuum Advance Data (degrees @ In. of Mercury):
        Advance starts: 1 @ 4
        Full Advance: 6 @ 12
        AUTO_LITE GENERATOR SPECIFICATIONS
        Generator Number: GDZ-4804A, GDZ-4805A (generator rotates clockwise, 6 volts, positive ground)
        Generator output: 35 amps @ 2000 RPM
        Brush Spring Tension: 35-53 oz.
        Field Current: 1.3 - 1.5 at 5 volts
        AUTO-LITE REGULATOR SPECIFICATIONS
        Regulator Number: VRP-6001A
        Cutout Relay:
        Voltage to close points: 6.5
        Reverse Current to Open Points: 4-6 amps
        Armature Air Gap: .031
        Voltage Regulator Setting: 7.3 volts
        Current Regulator Setting: 35 amps
        Current and voltage armature air gap, Inch: .048
        AUTO-LITE STARTING MOTOR SPECIFICATIONS
        Part number: MZ-4136 (starter rotates clockwise)
        Bush Spring Tension, Ounces: 42-53
        No Load Test: 68 amps, 5.0 volts @ 4000 RPM
        Torque Test: 280 Amps, 2.0 volts, Torque, Lbs.Ft.: 4.4



        quote:Originally posted by doughboywoodmike

        what is that in pounds

        http://i219.photobucket.com/albums/c...e/HPIM0572.jpg
        [img]http://i77.photobucket.com/albums/j54/deepnhock/1937CEBearfoot
        HTIH (Hope The Info Helps)

        Jeff


        Get your facts first, and then you can distort them as much as you please. Mark Twain



        Note: SDC# 070190 (and earlier...)

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        • #5
          What exactly are you trying to diagnose? This engine was 90 hp new in a 2910-3120 lb automobile.Do your compression check dry,if the cylinders are all about the same you should be ok,if not add a shot of oil in the low ones and retest,if they come up it's ring time,if not look for burned valves or blown head gasket. Nice pic

          63VY4 Leakin' Lena Hagerstown MD

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          • #6
            Ideally, it would come in at 105lbs. or very close. But something less can still provide a respectable performance. What's key is that all the readings are within a 15% range of variance.
            Another key point is that the car's cranking system is up to snuff so that the engine spins adequately while doing the compression check.
            As has been reviewed here numerous times, these 6volt vehicles often end up with a wrong-sized battery or starter cable thru the years and that (or dirty connections) can make a dramatic effect on the way an engine spins with the starter. Low cranking speed can make a difference in the readings you get while doing a compression test. [^]

            Miscreant Studebaker nut in California's central valley.

            1957 Transtar 1/2ton
            1960 Larkvertible V8
            1958 Provincial wagon
            1953 Commander coupe
            1957 President two door

            No deceptive flags to prove I'm patriotic - no biblical BS to impress - just ME and Studebakers - as it should be.

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