User Manual

200 BENCH PROCEDURES
Page 5-23
Figure 5-23 — Combustion Chamber Design
Refer to Figure 5-24.
The cast iron cylinder head is constructed using a
special iron alloy. The head contains cored inlet,
exhaust and coolant passages, drilled oil
passages, replaceable inlet and exhaust guides
and seats, various drilled passages and tapped
holes. Each cylinder head covers three cylinders
and has two inlet and two exhaust valves per
cylinder. Circular grooves correspond with the fire
ring bead on cylinder sleeves. This design sets
the fire ring over the liner, the lip and into groove
of the cylinder head while providing a positive
combustion pressure seal. Use a rotary brass-
wire brush to clean the circular groove.
1989/1990 E7 COMBUSTION SYSTEM
1991 AND LATER E7 COMBUSTION SYSTEM
ORIGINAL SWIRL
LEVEL
6-HOLE NOZZLE
TIPS
INCREASED SWIRL
LEVEL
8-HOLE VCO
NOZZLE TIPS
200285a
5-101.bk Page 23 Friday, March 17, 2006 11:05 AM