TCDS TC 5E-4

MODELS: Pratt & Whitney Military R-1830 Series I.C. NUMBER: SE-4 R-1830-94 Sea level 1100-2550- 1050-2550- 1100-2600- 1100-2550- 1100-2600- 1050-2550- Take-off (5 minutes), 43.5-S.L. 41.5-S.L. 43.5-S.L. 43.5-S.1. 43.5-S.I. 41.5-S. I.. Des a leven rpm, in.Hg.. at: 1200-2700- 1200-2700- 1350-2800- 1200-2700- 1350-2800- 1200-2700- 48.0 48.0 or 52.0 48.0 52.0 48.0 0x (with high impeller 1200-2750-47.0 8.47:1 8.47:1 (not 1200-2750-47.0 gear ratio) Maximum continuous, on - 94M2) bE. Ipm, in.Hg.. at: Critical altitude 1000-2700- 1000-2600- (ft.) 39.0-14500 41.5-14250 Iow critical 1000-2700- 1000-2600- altitude (ft.) 40.0-9000 42.2-10000 Fuel (minimum grade aviation gasoline) 100/130 91/96 100/130 91/9€ Fore and stroke, in. 5.5 × 5.5 Displacement, cu. in. 1830 height (dry), Its. Compression ratio 6-7:1 Model -90D: 1555 1490 1573 1500 1490 Model -86M2: 1442 1438 All others: 1500 1450 Fropeller shaft, SAE NO. 50 Carturetior. PD- 12F5 Or F8 ED- 1212 or F5 PD-12H1 OX H4 carturetor carburetor carbur et or Ceco Ignition, dual SF14LN-8 SF14LU-7 or SF 14 kN -8 or -8 01 magnetos -¿ magnetos magnetos Ignition timing, 25 (37 cruising) 25 25 25 degrees BTC (32 cruising) Maximum permissible temperatures are as follows: well type 475 degrees F. Cylinder base 335 inder head spark Elug washer 500 degrees F. degrees F.: NOTE 2. Pressure limits - normal operation: Maximum 1y per - with to ti Fuel pressure 16 [si 23 rsi prin oil pressure 100 psi 50 psi NOTE 3. The foliowing accessory provisions are available, except for -75 and -94: Direction Maximum Torque Maximum Overhar.g of **Speed Ratio (in. 1bs.) Moment Drives* of Drives Continuous Static (in. 1bs.) 2500 16500 200 Generator 600 6000 260 Vacuum or hydraulic pump Vacuum or hydraulic pump 1.4 125 1200 500 40 20 Fuel pump cc - 875 150 450 10 Governor • 958 100 Tachometer R. H. 60 L.H. 60 *"C" is clockwise viewing pad; "CC" is counter clockwise viewing pad. **Speed ratio is based on crankshaft speed. NOIE 4. The following accessory provisions are available for -75 and -94 only: Maximum Torque Maximum Overhang (in. 1ks.) Moment Continuous Static (in. lts.) Starter 2100 16500 220 Generator 3:1 300 1700 260 Vacuum or hydraulic pump Right rear 1. 4: 1 150 2250 40 Bottom rear 150 2250 40 side angular - right and left side 1:1 125 500 Fuel Fump cc - 875:1 150 450 Governor • 985:1 100 600 Tachometer R. H. • 5:1 100 600 L.H. - 5:1 20 60 *"c" is clockwise viewing pad; "CC" is counter clockwise viewing pad. **Speed ratio is based on crankshaft speed. NOTE S. The following engines incorporate the additional detailed characteristics: R-1830 Model Similar certificated Characteristics . -43 S3C4-G Incorporates a two-ppeed type supercharger housing, low ratio only, and the 16:9 spline coupled type reduction gear Using 20 degrees BTC ignition timing, the reduced ratings shown above for the -92 engine. 3С4- Similar to -43. 1C3- May incorporate either the spline or rigid coupled type 16:9 Interporates a rigid coupied 3:2 reduction auction bar assembly. reduction gear assembly. S1C3-G S1C3-G Incorporates the 16:9 spline coupled type reduction gear -61 S3C4-G Incorporates a two-speed type supercharger housing with the high ratio supercharger drive components, using 20 degrees BTC ignition timing, the reduced ratings for use with grade 91/96 is the same as the ratings shown above for the -92 engine for the low ratio. High ratio M.C.: 3Сц- Smiliar to -43. ЗC4- 2SC9-G Low ratio only. Reduced ratings for use with grade 91/96e reduction Incorporates 16:9 spline coupled 058c110.1. as follows: Low ratio M.C.: 1050 2550 Attitude - ft. 1050 2550 41.5 S.L. Similar to -43 except incorporates a rigid coupled 3:2 gear instead of a 16:9 spline coupled type reduction gear assembly. Has a -43 type supercharger and accessories case hut uses -90B S3C4-G Incorporates a two-speed supercharger housing with the high ratio supercharger drive components. Includes British type ignition catings for use with grade 91/9% Using 20 degrees BTC ignition timing, the reduced fuel is the same as shown above for the -92 engine for the low ratio. High ratio M.C.: - 90C S3C4-G Similar to -90B except incorporating American type ignition harness and the 16:9 spline coupled type reduction gear assembly. This engine may be converted to a -90D by removing the supercharge, drive clutches and high ratio gearing and (or reworked part 96669) gear assembly, 48236 shaft, bushing, 96280 selector valve cover, plus minor parts such as miscellaneous gaskets. - 90D S3C4-G Simiiar to -43. -92 Incorforates a 16:9 spline coupled type reduction gear assembly. - 92A S1C3-G incorcorates a screngcnenea nose section. - 94 2SC9-G In rate line courted detection ex assembly. Reduced ratings for use with grade 91/96 fuel follcws: Low ratio M.C.: 1050 02550 Altitude - ft. 1050 2550 41.5 S.L. High ratio M.C.: 1200 2550 37.5 16500 Take-off: 2700 47.0 S.L. Similar to -94 except incorporates -75 nose, power section, with the -94 supercharger section and part number 92536 accessory drive shaft. Similar to -75 with flower drive clutches removed and single Incorporates 16:9 spline coupled type reduction gear assembly and nose mcunted magnetos. NOT esignation. All models are eligible with -75 or -94 cylinders and associated changes and with no change in model when incorporated in certificated aircraft, the engine nameplate should be stamped "CAA Spec. No. SE-4." If there is no room for this information on the existing nameplate, such informatior. may be stamped or a clain thin metal plate attached beneath the existing Flate ky at least two of the mounting screws. ew model designation is required because of changes to the engine, the new designation should be added to the nameplate. NOTE 8. The following spark plugs are approved on these engines: *1587 ' 51300 IS88, 161, 171, 261, 271, 281 Autolite SI30, Champion C515, C3S, RESUS, R2155, A375-1, REA371 REA37N, KHA37E, RHB37E, REA37N, F11! and IS88 are not approved for use in the k-1830-75 and -94 series engines.