When honing cylinder blocks, maintain the
specific dimensional surface finish and cross hatch
tolerances to obtain satisfactory oil control. The
tolerances specified are virtually the same as those
used for original bore finish at the factory, and can be
obtained with an automatic honing machine such as the
Sunnen CK-10. This machine has been evaluated and
found to give satisfactory results.
Due to the cost of suitable honing equipment, it
may be more expedient to have the honing done by a
shop equipped with a Sunnen CK-10 or equivalent.
The following Steps can prevent damage to the
block in transit to a shop.
Completely disassemble, but do not clean block.
The residual oil on the surface will prevent rust.
Enclose the block in an industrial plastic bag
and position it with the oil pan surface on a
suitable wood pallet or equivalent. Dimension
of a suitable wood pallet are shown.
Cover the block with 1/2 in. (12.7 mm) thick
plywood or equivalent, and band block to the
returned. To prevent rust, the block should not
be cleaned after honing, the film of honing oil
provides ample protection from rusting.
If blocks are to be stored for any
length of time, clean and anti-rust
assembling the engine, the cylinder block must be
cleaned and prepared according to the following
bearings must be removed to permit thorough
cleaning of the oil passages. To remove the
bearings, see the topic CAMSHAFT BEARINGS
REMOVAL AND INSTALLATION.
Use 1P3565 Chamfering Group, remove the
sharp comer at the bottom of the cylinder bores
as shown. This is essential to prevent scuffing
the piston skirts. The chamfer should be
approximately 10° x .09 in. (10° x 2.3 mm).
Avoid damage to the cylinder bore
surface or any other parts.
Using the 1P5580 Brush Group and a strong
following. areas of the block.
Main oil gallery and supply passage. Use
the IP5572 or 1P5573 Brush and stroke
several times while rotating the brush.
Camshaft bearing oil passages. Use the
1P5571 Brush and stroke several times
while rotating the brush.
Cylinder bores. Use the 1P5574 Brush
and stroke each bore for one minute while
rotating the brush at 1000 rpm.