1.0 Specifications
DETROIT DIESEL 53
SPECIFICATIONS
used engine parts and still ensure satisfactory
Specifications, clearances and wear limits are listed
performance. It should be emphasized that the figures
below.
It should be specifically noted that the
given as "Limits" must be qualified by the judgement of
clearances apply only when all new parts are used at the
personnel responsible for installing new parts. These
point where the various specifications apply. This also
wear limits are, in general, listed only for the parts more
applies to references within the text of the manual. The
frequently replaced in engine overhaul work.
For
column entitled "Limits" in this chart lists the amount of
additional information, refer to the text.
wear or increase in clearance which can be tolerated in
TABLE OF SPECIFICATIONS, NEW CLEARANCES AND WEAR LIMITS
These limits also' apply to oversize and undersize parts
ENGINE PARTS (Standard Size, New)
MINIMUM
MAXIMUM
LIMITS
Cylinder Block
Block bore:
Diameter (top).......................................................................
4.5195"
4.5215"
4.5235"
Diameter (center) ..................................................................
4.4865"
4.4880"
4.4900"
Diameter (bottom).................................................................
4.3565"
4.3575"
4.3595"
Out-of-round .........................................................................
.0015"
Taper ....................................................................................
.0015"
Cylinder liner counterbore:
Diameter ...............................................................................
4.8200"
4.8350"
Depth ....................................................................................
.3000"
.3020"
Main bearing bore:
Inside diameter (vertical axis, V-tpe engine) .........................
3.7510"
3.7520"
Top surface of block:
Flatness--transverse (all) ......................................................
.0030"
Flatness--longitudinal (6 cyl.) ................................................
.0060"
Depth of counterbores (top surface):
Cylinder head seal strip groove .............................................
.0970"
.1070"
Water holes ..........................................................................
.1090"
.1150"
Oil holes ...............................................................................
.0920"
0980"
Cylinder Liner
Outside diameter (upper seal ring surface) ..................................
4.4850"
4.4860"
Outside diameter (lower seal ring surface) ..................................
4.3550"
4.3560"
Inside diameter ...........................................................................
3.8752"
3.8767"
Out-of-round (inside diameter) ....................................................
.0020"
.0030"
Taper (inside diameter) ...............................................................
.0010"
.0020"
Depth of flange BELOW block ....................................................
.0465"
.0500"
.0500"
Variation in depth between adjacent liners...................................
.0015"
.0015"
1972 General Motors Corp.
Page 4
