Case 770 EX - Page 36

Engine-Engineandcrankcase
Exhaustvalves(For770EX/EXMagnum)
Valveheaddiameter
41.00–41.25mm(1.61–
1.62in)
Valvestemdiameter
7.985–8.000mm(0.314–
0.315in)
Faceangle
45°30’±7’
Tappetclearance(Cold)0.300mm(0.012in)
Camlift
6.1277mm(0.2412in)
Valvelift
10.8679mm(0.4279in)
Intakevalves(For770EX/EXMagnum)
Valveheaddiameter
43.300–45.500mm(1.705–
1.791in)
Valvestemdiameter
7.985–8.000mm(0.314–
0.315in)
Faceangle
60°30’±7’
Tappetclearance(cold)0.300mm(0.012in)
Camlift
5.8885mm(0.2318in)
Valvelift
10.4437mm(0.4112in)
Valvesprings(For770EX/EXMagnum)
Numberpervalve
1
Freelength
44.600mm(1.756in)
Lengthloadedat26.1–28.9kg(57.5–63.7lb)34.000mm(1.339in)
Lengthloadedat51.2–56.5kg(112.9–124.6lb)23.800mm(0.937in)
Valvetiming(For770EX/EXMagnum)
Intakeopening(beforetopdeadcentre)
15°
Intakeclosing(afterbottomdeadcentre)
45°
Exhaustopening(beforebottomdeadcentre)
56°
Exhaustclosing(aftertopdeadcentre)
26°
Valveinserts(For770EX/EXMagnum)
ValveguideOD
13.933–14.016mm(0.549–
0.552in)
Valveguideoversize
0.200mm(0.008in)
Valveguideinterferencetinhousingcylinderhead
0.0050–0.0500mm(0.0002–
0.0020in)
ValveguidettedIDafterreaming
8.023–8.043mm(0.316–
0.317in)
Valvestemclearanceinguide
0.0230–0.0580mm(0.0009–
0.0023in)
Maximumwearclearance
0.130mm(0.005in)
Maximumvalvestemeccentricityoveronerevolutionwithstylusonsealingface0.030mm(0.001in)
Engine-Torque
Tighteningtorques
Description
Threadsize
Torque
Angle
Capscrew,cylinderhead(C1)
M12X1.25
40N·m(354lbin)
130°±5+140°±5
Capscrew,mainbearingcaps(C2)
M14X1.25
80N·m(708lbin)
90°
Capscrew,timingcoverandcase(C3)
M12X1.25
40N·m(354lbin)
-
Capscrew,connectingrodcaps(C4)
M11X1.25
40N·m(354lbin)
60°
Capscrew,ywheel(C5)
M12X1.25
40N·m(354lbin)
60°
4819054426/09/2017
10.1[10.001]/4