Ariel JGI, Technical Manual

Page: 22 / 178

F
OR
M
ODELS
: JGI, JGM, JGN, JGP
AND
JGQ S
ECTION
1 - D
ESIGN
S
PECIFICATIONS
& D
ATA
PAGE 1-12 9/08
T
ABLE
1-7 P
ISTON TO
B
ORE
C
LEARANCE AND
C
ONVENTIONAL
P
ISTON
R
ING
E
ND
G
AP
, I
N
. (mm) - M, P & SP C
LASS
C
YLINDERS
BORE
DIAMETER
a
a. Conventional piston rings are standard for all M, P and SP Class Cylinders, except for 1-3/4M-FS
Class Cylinder with bore diameters of 1.625” (41mm) and 1.75” (44) where piston/rider rings are
standard. Piston/rider rings are optional for all other M, P and SP Class Cylinders.
PISTON TO BORE
CLEARANCE
PISTON RING END GAP - TFE
NEW MAXIMUM
2.0625 (52) 0.007 to 0.011 (0.18 to 0.28) 0.025 to 0.030 (0.64 to 0.76) 0.120 (3.05)
2.25 (57) 0.007 to 0.011 (0.18 to 0.28) 0.027 to 0.032 (0.69 to 0.81) 0.128 (3.18)
2.5 (64) 0.007 to 0.011 (0.18 to 0.28) 0.030 to 0.036 (0.76 to 0.91) 0.144 (3.66)
2.75 (70) 0.007 to 0.011 (0.18 to 0.28) 0.033 to 0.040 (0.84 to 1.02) 0.160 (3.71)
3 (76) 0.007 to 0.011 (0.18 to 0.28) 0.036 to 0.044 (0.91 to 1.12) 0.176 (4.47)
3.25 (83) 0.009 to 0.013 (0.23 to 0.33) 0.039 to 0.047 (0.99 to 1.19) 0.188 (4.76)
3.5 (89) 0.009 to 0.013 (0.23 to 0.33) 0.042 to 0.052 (1.07 to 1.30) 0.208 (5.28)
3.75 (95) 0.010 to 0.014 (0.25 to 0.36) 0.046 to 0.056 (0.17 to 1.42) 0.224 (5.69)
3.875 (98) 0.010 to 0.014 (0.25 to 0.36) 0.047 to 0.057 (0.19 to 1.45) 0.228 (5.79)
4.125 (105) 0.010 to 0.014 (0.25 to 0.36) 0.049 to 0.060 (1.24 to 1.52) 0.240 (6.10)
4.375 (111) 0.011 to 0.015 (0.28 to 0.38) 0.052 to 0.064 (1.32 to 1.63) 0.255 (6.48)
4.75 (121) 0.012 to 0.017 (0.30 to (0.43) 0.057 to 0.077 (1.45 to 1.96) 0.308 (7.82)
5.125 (130) 0.012 to 0.017 (0.30 to 0.43) 0.061 to 0.081 (1.55 to 2.06) 0.324 (8.23)
5.5 (140) 0.013 to 0.018 (0.33 to 0.46) 0.065 to 0.085 (1.65 to 2.16) 0.340 (8.64)
5.75 (146) 0.013 to 0.018 (0.33 to 0.46) 0.068 to 0.088 (1.73 to 2.24) 0.352 (8.94)
6.125 (156) 0.014 to 0.020 (0.36 to 0.51) 0.073 to 0.093 (1.85 to 2.36) 0.372 (9.45)
6.5 (165) 0.014 to 0.020 (0.36 to 0.51) 0.077 to 0.097 (1.96 to 2.46) 0.388 (9.86)
7.5 (191) 0.016 to 0.022 (0.41 to 0.56) 0.089 to 0.109 (2.26 to 2.77) 0.430 (10.92)
8 (203) 0.016 to 0.022 (0.41 to 0.56) 0.095 to 0.115 (2.41 to 2.87) 0.460 (11.68)
8.5 (216) 0.017 to 0.023 (0.43 to 0.58) 0.102 to 0.122 (2.59 to 3.10) 0.488 (12.40)
8.875 (225) 0.018 to 0.024 (0.46 to 0.61) 0.106 to 0.126 (2.69 to 3.20) 0.504 (12.80)
10.5 (267) 0.021 to 0.027 (0.53 to 0.69) 0.125 to 0.145 (3.18 to 3.68) 0.580 (14.73)
11 (279) 0.022 to 0.028 (0.56 to 0.71) 0.131 to 0.151 (3.33 to 3.84) 0.604 (15.34)
13 (330) 0.026 to 0.032 (0.66 to 0.81) 0.155 to 0.175 (3.94 to 4.45) 0.700 (17.78)
13.5 (343) 0.027 to 0.033 (0.69 to 0.84) 0.162 to 0.182 (4.12 to 4.63) 0.728 (18.49)