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Begin OCR Text:
P ._
J FJJ
_ENE_AL
Typedesignation .............................................. B 18 A (4968O1 and 496814)'
OutpUL, b.h.p. at r.p.m. (SAE) .................................. 75./4_5OO
(DIN) .................................. G8,_'45DO
MaK. torQue, kgm (lb.ft) at r.p.m. (SAE> .......................... 14.O (1O1)..'2aOO
(DIN) .......................... 13.5 (98)/26OO
Compression pressure (warm engine) when turned over with starter
motor, 25O-3OO r.p.m., kg./cm' ................................ 11-13
Ib./SQ,ln ..,,._,......................... 156-185
Compression ratio ............................................ 8.5.1
NUmber Of CyllnderS .......................................... 4
Bore ........................................................ 84.1q mm (3.312'')
Stroke ...................................................... 8O mm (3.15'') _
Displacement ................................................ 1.78 litres
Weight, including electrical equipmentand carburettor ............ approK. 155 kg (341 Ib.)
CYLINDE_ _LOCK _
Material ...................................................... Specjal-al_oy cast iron
Bore, standard .............................................. 84.14mm(3.313'')
O.O2O'' OVerSIZe ........................................ 84.65mm(3.333'')
O.O3O'' ,, ........................................ 84.9Omm(3.342'') _
O.O4O'' ,, ........................................ 85.16mm(3.353'')
O.O5O'' ,, ........................................ 85.41 mm(3.362'')
Pl__ON_
Material .................................................... Ligft-alloy
Permiss_ible weight difference between pistons in same engine .... 1O grammes (O.35 oz.)
Height, overall, early production .............................. 83.5mm(3.29'')
Iate production ................................ 71.Omm(2.8O'')
Height from centr8 of gudgeon pin to piston crown .............. 46mm(1.81'')
Piston clearance .............................................. O.O2-O.O4'' (O.OOO8-O.OD16'')
Pl__ON _lN__ _
Piston ring gap measured in ring opening ........................ O.O25-O.5O mm (O.O1O-O.O2O'')
Piston ring oversizes .......................................... O.O2O'' O.O4O''
O.O3O'' O.O5O''
CO__f_SS'lO_ f'I_gS _
Marked ''TOP''. Upper ring on each piston cfromed.
Number of rings on each piston ................................ 2
Height ...................................................... 1.98mm (O.O78'')
Piston ring clearance in groove ................................ O.O54-O.O81 mm (O.OO21-O.OO32'')
O__ S_fo_ef fI_gS
Number on each piston ........................................ 1
Height ...................................................... 4.74mm |
