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AERONCA Engine Handbook Table of Contents Previous Section Next Section Index Home
SPECIFICATIONS OF AERONCA ENGINES A.T.C. -- 71 71 71
E-113A
MODEL E-107A E-113 E-113B E-113C
RATING
Fuel-Aviation Gasoline
(73 Octane)
Rated Power 30 HP 36 HP* 36 HP* 36 HP* 40 HP*
Rated Speed 2500 2400* 2400* 2400* 2540*
* Dept. of Commerce Rating
GENERAL FORM
Cylinder Arrangement Horizontal Horizontal Horizontal Horiztonal
Number Cylinders 2 2 2 2
Cooling Air Air Air Air
Bore 4-1/8" 4-1/4" 4-1/4" 4-1/4"
Stroke 4" 4" 4" 4"
Piston displancement 107 113.5 113.5 113.5
(CUin)
Compression Ratio 4:1 5.1:1 5.4:1 5.4:1
CRANKSHART
Type 2 throw 2 throw 2 throw 2 throw
Main Bearings Roller Roller Roller Roller
Thrust Bearings Ball Ball Ball Ball
Connecting Rod Bearings Roller Roller Roller Plain
(Ci-Si-Cu)
CONNECTING RODS
Form I-section I-section I-section I-section
Crankpin bearing type Split Split Split Split
CYLINDERS
Barrel Cast Iron Steel Steel Steel
Head Alum alloy Alum alloy Alum allow Alum allow
Cooling fins Integral Integral Integral Integral
VALVES
Number per cylinder 2 2 2 2
Lift - Inlet & Exhaust .4375" .4531" .3750" .3750"
Dia. valve ports 1.75" 1.50" 1.4375" 1.4375"
Cold tappet clearance .010" .005" .005" .005"
VALVE TIMING
Inlet opens 6°30' BTC 5° BTC 5° BTC 5° BTC
Inlet closes 6°30' ATC 5° ATC 5° ATC 5° ATC
Exhaust opens 56°30' BBC 55° BBC 55° BBC 55° BBC
Exhaust closes 56°30' ABC 55° ABC 55° ABC 55° ABC
Timing Tappet clear .010" .030" .030" .030"
E-113A
OIL PUMP E-107A E-113 E-113B E-113C
Type Gear Gear Gear Gear
Number of sections 2 2 2 ** 2
Oil Pressure req'd 8-10 lbs 15-20 lbs 15-20 lbs 55-60 lbs
(at 120° F)
**When Cuno Oil Filter is used, oil pressure is 9-13 lbs gauge.
All E-113B engines require a 9-13 lb oil pressure
MAGNETO
Type (Bosch)FF2AR FF2AR FF2AR FF2AR
Impulse Coupling (Bosch)C-123 C-123 C-123 C-123
Timing-Full Adv 30° BTC 36° BTC 36° BTC 36° BTC
Rotation (from front
of engine) Clockwise Clockwise Clockwise Clockwise
Automatic spark control - - Yes Yes
SPARK PLUGS
Type Aircraft Aircraft Aircraft Aircraft
(No. 6 or 7) (No. 4) (No. 4) (No. 4)
Thread 18m/m 18m/m 18m/m 18m/m
TACHOMETER DRIVE
Type SAE Std SAE Std SAE Std SAE Std
Rotation (from rear
of engine) Clockwise Clockwise Clockwise Clockwise
Speed 1/2 C/shft 1/2 C/shft 1/2 C/shft 1/2 C/shft
CARBURETOR
Make Zenith 1½" Zenith 1½" Zenith 1½" Stromberg
Model No. 156 AL No. 156 AL No. 156 AL NAS-2
WEIGHT Complete engine 113 lbs 118 lbs 121 lbs 121 lbs Shipping wt (domestic) 190 lbs 194 lbs 197 lbs 197 lbs ACCESSORIES Short exhaust stacks Optional Optional Optional Optional Air Cleaner Optional Optional Optional Optional
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