# TCDS E-123: Pratt & Whitney Division - Type: Type certificate data sheet - Status: Current - Holder: Pratt & Whitney Division - Revision: 14 - Revised: July 15, 1966 - Product: Engine - Data sheet PDF: https://openairdocs.org/files/sha256/0c/82/0c82e70f4ed210e1d5242b7286bc8203c3fbf2957ffbfe1449ed04945d0efd9e - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/8C23CF4CA942EAB58525670D005524CC.0001 - Page: https://openairdocs.org/tcds/E-123 ## Models (7) As the data sheet lists them. - Wasp Jr. T1B3 - Wasp Jr. B-4 - Wasp Jr. SB-3 - Wasp Jr. T1B2 - Wasp Jr. SB - Wasp Jr. SB-2 - Wasp Jr. B-5 ## What the data sheet says From the PDF's text layer, line by line; tables lose their columns. The PDF is the record. ```text Page No. 1 2 3 Rev. No. 14 14 14 FEDERAL AVIATION AGENCY E-123 Revision 14 PRATT & WHITNEY Wasp Jr. SB, SB-2, SB-3 TIB2, TIB3 B-4, B-5 July 15, 1966 TYPE CERTIFICATE DATA SHEET NO. E-123 Engines of models described herein conforming with this data sheet (which is a part of type certificate No. E-123) and other approved data on file with the Federal Aviation Agency, meet the minimum standards for use in certificated aircraft in accordance with pertinent aircraft data sheets and applicable portions of the Civil Air Regulations provided they are installed, operated and maintained as prescribed by the approved manufacturer's manuals and other approved instructions. Manufacturer Pratt & Whitney Aircraft Division of United Aircraft Corporation East Hartford, Connecticut 06108 Model Wasp Jr. SB, -2, -3 T1B2, 3 B-4 B-5 Type 9RA - Direct drive - - - - - - Rating Max. cont., hp., r.p.m., in. Hg., at: Critical alt. (ft.) 400-2200-33.5-5000 450-2300-37.0-1500 450-2300-36.5-2300 (See NOTE 9) Sea level pressure alt. (ft) 400-2200-34.5-S.L. 450-2300-37.5-S.L. 450-2300-37.0-S.L. (See NOTE 9) Takeoff (five minutes), hp., r.p.m., in. Hg. 400-2200-34.5 450-2300-37.5 452-2300-37.0 - - 450-2300-36.5 Fuel (minimum grade aviation gasoline) Grade 80/87 - - - - - - Lubricating Oil See P&WA S.B. #1183 - - - - - - Bore and stroke, in. 5 3/16 x 5 3/16 - - - - - - Displacement, cu. in. 985 - - - - - - Compression ratio 6:1 - - - - - - Weight (dry), lb. 640, 653, 668 653, 674 684 682 C.G. location (dry) Fwd. of mounting face, in. 7.3, 7.3, 6.7 7.3, 6.7 6.6 6.7 Below crankshaft C.L., in. .2 - - - - - - Propeller shaft, SAE No. 30 - - - - - - Supercharging (Imp. gear ratio) 10:1 - - - - - - Carburetion Stromberg NA-R9B or NA-R9C2 carburetor - - Stromberg NA-R9B-19 carburetor - - Venturi diameter, in. 2 3/4 2 5/8 2 3/4 - - Ignition, dual Scintilla VAG-9D, VAG-9DR, SB9R or Bosch SB9R-U2, SB9R-U3 magnetos - - Bosch SB9R-U3 or Scintilla SB9R magnetos - - Ignition timing, °BTC 25 - - - - - - Spark plugs See NOTE 8 - - - - - - NOTES 1,2,3,4,5,6,8 1,2,4,5,8 1,2,4,8 1,2,4,8,9 Certification basis Type Certificate No. 123 Production basis Production Certificate No. 2 E-123 2 NOTE 1. Maximum permissible cylinder head, barrel and oil inlet temperatures, 550°F, 335°F and 200°F, respectively, except cylinder head for B-4 which is 500°F. NOTE 2. The following accessory drives are provided: Direction of Rotation (Clockwise or Speed Ratio Maximum Torque Maximum Counter- (Times Crank (in. -lb.) Overhang Clockwise) shaft Speed) Continuous Static (in. -lb.) Starter CC 1.0 2200 10000 180 Generator (None on B-4) C 1.5 100 300 160 Generator (opt. on all models - P&WA Service Bulletin No. 1118 C 2.0 150 900 183 * Fuel pump CC 1.0 150 450 10 Vacuum pump (SB, SB2, TIB-2 only) C 1.5 100 800 10 * Hydraulic or vacuum pump (SB-3, TIB-3, B-5) C 1.5 100 300 10 Hydraulic or vacuum pump (B-4, only) C 1.5 100 800 10 Vertical auxiliaries (2 provided) CC 1.0 150 450 10 Prop. governor (use vertical aux. drive) * NOTE. For SB-3 and TIB-3 engines, maximum torque loading on these drives should not exceed 150 in. -lb. combined load. Wasp Jr. SB and early SB2 engines incorporate tongue and groove type fuel and vacuum pump drives and all engines have splined type drives. NOTE 3. When Grade 80/87 is not used, Aviation Grade 80 is suitable for a maximum of 400 hp. and Grade 91 should be used when higher power is attained. NOTE 4. These engine models differ additionally in the following respects: Model Valve Rocker Lubrication Method Hydraulic Propeller Provisions* 8B Manual greasing and oiling system C.S. or T.P. 8B-2 External automatic C.S., T.P., or F. TIB2 External automatic C.S., T.P., or F. 8B-3, B-5 Internal automatic C.S., T.P., or F. TIB3 Internal automatic C.S., T.P., or F. B-4 Internal automatic None - this engine used with extension shaft and is mounted with the crankshaft vertical. * Some model 8B-3 engines may bear the serial No. suffix "NH" (non-feathering) in which cases modification of the crankshaft is necessary before a feathering propeller can be used. This modification is also possible on other Wasp Jr. engines. (C.S. - constant speed; T.P. - two position; F. - feathering). NOTE 5. Model SB-3 and those TIB3 engines having serial numbers above 9257, as originally manufactured involve a possible maximum weight increase of 40 lbs. due to the substitution of aluminum for magnesium in the nose, blower and rear sections. Since any one or all of these sections may be substituted, the weight increase stated is the maximum. NOTE 6. Includes Model SB engines Nos. Y-22 and Y-23 (R.C.A.F. Nos. 1594 and 1595). NOTE 7. Deleted February 10, 1954. NOTE 8. The following spark plugs are approved on these engines: AC S-86R, SR-83P, HSR-86, HSR-83P, SR-97, HSR-87. Auto-Lite SH-2K, SH-2M, SH-20, SH-20A. BG 417S, 706SR, RB485S, SS485A. Champion C26S, C27S, ED41N, EM41N, RC26S, RED39N, RHD39N, REM39N, RHM39N, REM40E, RHM40E. NOTE 9. When the B-5 engine is operated at full rich power mixture settings, the following rating applies: 3 E-123 Maximum continuous, hp., r.p.m., in. Hg. at Rated pressure alt. (ft.) 450-2300-35.5-2300 Sea level pressure alt. (ft.) 450-2300-37.0-S.L. When the B-5 engine is operated at best power mixture settings, the following rating applies: Maximum continuous, hp., r.p.m., in. Hg. at: Rated pressure alt. (ft.) 450-2300-35.5-3500 Sea level pressure alt. (ft.) 450-2300-36.5-S.L. NOTE 10. Fuel pressure limit: Max. Min. Pressure System 6 p.s.i. 2 p.s.i. Gravity feed 6 p.s.i. 1 p.s.i. with required carburetor setting ....END.... ``` ## ADs (7, in force first) - [AD 78-08-07](https://openairdocs.org/ad/78-08-07): Cylinder Head Separation · Pratt & Whitney Division Military R-985 Series, Wasp Jr. A, Wasp Jr. B-4 and 10 more. Effective May 2, 1978 - [AD 68-09-01](https://openairdocs.org/ad/68-09-01): Crankshaft Flyweight Liners · Pratt & Whitney Division Military R-985 Series, Wasp Jr. A, Wasp Jr. B-4 and 10 more. Effective Jan 17, 1973 - [AD 70-10-02](https://openairdocs.org/ad/70-10-02): Gerotor Pump Drive Pin/Fuel Injector Filter · Pratt & Whitney R-985 engine and ATI fuel injection (Staggerwing Museum Foundation STC SE1-391). Effective Jun 9, 1970 - [AD 66-14-04](https://openairdocs.org/ad/66-14-04): Cam Reduction Drive Gear Assembly · Pratt & Whitney Division Military R-985 Series, Wasp Jr. A, Wasp Jr. B-4 and 10 more. Effective Jul 9, 1966 - [AD 56-06-02](https://openairdocs.org/ad/56-06-02): Cylinder Flange Attaching Stud · Pratt & Whitney Division Double Wasp CA15, Double Wasp CA17, Double Wasp CA18 and 115 more - [AD 57-05-04](https://openairdocs.org/ad/57-05-04): Crankshaft · Pratt & Whitney Division Military R-985 Series, Wasp Jr. A, Wasp Jr. B-4 and 10 more - [AD 56-26-03](https://openairdocs.org/ad/56-26-03) (historical): Crankshaft · Pratt & Whitney Division Military R-985 Series, Wasp Jr. A, Wasp Jr. B-4 and 10 more ## STCs approved under this data sheet (22) - [STC SE04651CH](https://openairdocs.org/stc/SE04651CH): To allow use of l00R grade aviation fuel meeting Swift Fuel, LLC specification SPEC-l00R-22. Swift Fuels LLC - [STC SE27WE](https://openairdocs.org/stc/SE27WE): Installation of two Bendix-Stromberg Model PS-5C carburetors. AvComp LLC - [STC SE01966WI](https://openairdocs.org/stc/SE01966WI): Use of GAMI G100UL High Octane Unleaded Avgas in spark ignition piston aircraft engines. General Aviation Modifications Inc. - [STC SE5189NM](https://openairdocs.org/stc/SE5189NM): Installation of chip detector light system.. A & L Aircraft Parts Inc - [STC SE02505SE](https://openairdocs.org/stc/SE02505SE): Installation of a Kenmore flyweight screw. Kenmore Air Harbor LLC - [STC SE3-612](https://openairdocs.org/stc/SE3-612): Installation of Bendix Model RS-10DD-1 single point fuel injection system to replace the Bendix-Stromberg NAR-9B carburetor.. Textron Aviation Inc - [STC SE31WE](https://openairdocs.org/stc/SE31WE): Installation of Electro-Coatings, Inc. piston rings P/N 251822, 251824, and 251825 on Pratt and Whitney R-985 piston P/N 27056 for use with Channelcromium plated R-985 engine cylinders. Continental Motors, Inc. - [STC SA4005NM](https://openairdocs.org/stc/SA4005NM): Precise Flight Inc. Pulselite Control System. Precise Flight Inc - [STC SE808GL](https://openairdocs.org/stc/SE808GL): Installation of a fuel flow transducer.. Shadin Avionics - [STC SE4-864](https://openairdocs.org/stc/SE4-864): Increase in impeller drive ratio from 10:1 to 12:1.. Covington Aircraft Engines, Inc. - [STC SE5141NM](https://openairdocs.org/stc/SE5141NM): Installation of the SOL 3503 exhaust gasket.. SOL Company - [STC SE6069NM](https://openairdocs.org/stc/SE6069NM): Removal of inverted flight check valve from Stromberg NA-R9B and NA-Y9E1 series carburetors.. Aero Engines Inc. - [STC SE1860CE](https://openairdocs.org/stc/SE1860CE): Add the following approved fuel; unleaded automotive gasoline 87 minimum antiknock index and leded automotive gasoine, 98 minimum aniknock incex, (ron- mon)/2. Petersen Aviation Inc - [STC SE1210SW](https://openairdocs.org/stc/SE1210SW): Bronze bushings.. Aircraft Engine Service Inc - [STC SE10WE](https://openairdocs.org/stc/SE10WE): Bendix fuel injection system, RS-10B2.. Aviation Power Supply Inc - [STC SE297SW](https://openairdocs.org/stc/SE297SW): Modification of exhaust valve 71166.. Seale Avn Supply Co Inc - [STC SE4-1136](https://openairdocs.org/stc/SE4-1136): Fuel injection system.. Bendix Aviation Corporation - [STC SE483SW](https://openairdocs.org/stc/SE483SW): Modification to R-985 cam assembly and cam drive gears.. Spartan Aircraft Company - [STC SE563SW](https://openairdocs.org/stc/SE563SW): R-985 cylinders modified to accept R-1830 Series rocker shaft bushings and R-1830 rocker shaft.. Spartan Aircraft Company - [STC SE741SW](https://openairdocs.org/stc/SE741SW): R-1830 rockershaft assemblies.. Southwest Airmotive Co - [STC SE7WE](https://openairdocs.org/stc/SE7WE): Replace Pratt & Whitney engine adapter 16487 and Bendix body adapter 2642-727.. Jobmaster Company - [STC SEW-11](https://openairdocs.org/stc/SEW-11): Manufacture of piston pin A-56009, and piston pin and plug assembly.. Fresno Airmotive Co --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.