# Cylinder Boring - Toyota 1HD-FT Repair Manual

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EG-BO
ENGINE - ENGINE MECHANICAL
--
CYLINDER BORING
EG
-
Sized Mark
Front Mark
(Arrow)
39.06
mm
HINT:
Bore all the 6 cylinders to the oversized piston
outside diameter.
Replace all the piston rings with ones to match
the oversized pistons.
1.
KEEP OVERSIZED PISTDNS
Over.ized piston diametar:
O/S 0.50
94.345 - 94.375
mm
(3.7U4 - 3.7155
in.)
2.
CALCULATE AMOUNT TO BORE CYLINDERS
(a)
Using a micrometer. measure the piston diameter at
right angles to the piston pin center line. 39.06 mm
(1.5378
in.) from
the piston head.
(b) Calculate the amount each cylinder is to be raborad as
follows:
Size to b. ,.bored
=
P
+
C - H
P
=
Pi.ton diemeter
C
=
Piston cle.rence
0.145 - 0.165
mm
(0.0057 - 0.0065 in.1
H
=
Allowance for honing
0.02
mm
(0.0008
in.) or
I•••
3.
BORE AND HONE CYLINDER TO CALCULATED
DIMENSIONS
Maximum honing:
0.02 mm (0.0008 in.)
NOTICE: Exc••• honing will d••troy the fini.h.d round-
n••••

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#### Comments to this Manuals

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##### Latest comments:
• Dibakar Kundu Aug 13, 2019 04:39:
much helf full to us,we hope will get this type of support in future.