Toyota 2H Repair Manual page 117

E N G I N E M E C H A N I C A L
Repl ace
BO R I N G O F C Y L I N D E RS
N O T E :
•
B o re
d ia m e t er.
•
sized pistons.
1 . K E E P O V E R S I Z E D P I S TON
Oversized piston d i a m e t e r :
OIS 0 . 5 0
l a }
2 . C A L C U LATE A M O U N T TO BORE C Y L I N D E R
U s i n g a micrometer, measure t h e p i s t o n d i ameter a t
right
(0.9 4 1
edge.
Calculate
(bl
as f o l l o w s :
3 . BORE
D I M E N S I O N S
M a x i m u m honing:
CAUTI O N :
roundness.
-
a l l s i x
C y l i n d e r Block
cylinders f o r t h e ovef sized p i s t o n ' s outside
the p i s t o n rings w i t h ones to m a t c h the over­
2H 9 1 . 4 3 0
13.5996 -3.6008 in.!
1 2 H - T 9 1 .440 - 9
1 3 . 6000 - 3 . 60 1 2 i n . J
a g e \0
9
n l the p i s t o n pin hole center line,
(0. 3 5
in.l or m m
C
t h e a m O u n t each cylinder i s to be rebored
=
S i z e to be rebored
=
P P i ston d i a m e t e r
=
mm
P i s t o n c l earance
2 H 0.060 - 0 . 0 8 0
10.0024 - 0 . 0 0 3 2 in.l
1 2 H - T 0.060 - 0.070
1 0 . 0 0 2 0 - 0 . 0 0 2 8 in.l
=
H A l l ow a n c e f o r honing
0.02 (0.0008 i n . ) o r less
AND H O N E C Y L I N D E R S TO
m m
0 . 0 2
E x c e ss h o n i n g w i l l d e s t r o y the f i n i shed
E M- 1 0 7
-
1 4 m m
9 1 .460 mm
. 7 0
25
mm
i n . ) from t h e skirt bottom
C -
m m
m m
+
P H
C A L C U LATED
(0.0008 i n . )
a