S&S Cycle Stroker Kits 106 for Harley-Davidson Twin Cam 88 Engines - Manual (Page 5)

NOTES:
●
S&S ® recommends at least .060” clearance around periphery
of valve.
● S&S recommends at least .060” clearance between intake
valve and piston valve pocket recess, and .080” between
exhaust valve and piston valve pocket recess.
● When checking valve to piston clearance pushrods must be
adjusted so the hydraulic piston in tappet is bottomed in the
tappet bore or on the HL
2
T washer if used. This insures that
tappets can not bleed down so valve position will be
accurate for clearance check.
Insufficient clearance between piston and valves may cause
them to contact each other during operation resulting in
damage to piston and valve train components.
5. If insufficient clearance exists, machine piston until
proper clearance is achieved.
6. Disassemble top end and clean all parts for
final assembly.
3. Final assembly.
NOTE - Cleaning parts prior to and during assembly and keeping
parts clean after final assembly are imperative to minimize
contaminants that may circulate in oil and shorten engine life.
Many parts can be cleaned with soap and water first. Then,
reclean all internal parts and gasket mating surfaces using high
quality solvent that does not leave any harmful residues.
Be sure to read and follow manufacturer’s instruction label
before use. Use drill bits and compressed air to clean all oil
passageways of dirt, filings, etc. whenever possible. All iron or
steel parts should be coated with engine oil immediately after
cleaning to prevent rust. During actual final assembly, recoat all
internal parts with high quality engine oil.
Manufacturing chips, dirt and/or other contaminants
circulating in engine oil may possibly damage engine
components resulting in shorter engine life and possible
engine failure.
● Some solvents, degreasers and other chemicals are harmful to
skin, eyes and other body parts. Many items are flammable
and present a fire hazard. Read manufacturer’s instruction
label for proper use. Use in well ventilated area and wear
protective clothing when using them to avoid personal
injury.
● Compressed air and particles dislodged by compressed air
are harmful to eyes and body. Wear protective goggles
when using compressed air and always direct air stream
away from yourself and other people near you.
A. Head gasket surface flatness check. Before top end is
assembled, head gasket to cylinder mating surfaces
should be checked.
Incomplete contact between gasket surfaces of cylinders and
cylinder heads may cause combustion leakage possibly
resulting in damage to cylinders and/or other engine
components.
1. Thoroughly clean head and cylinder gasket
surfaces.
2. Place straight edge across head gasket surface at
different places around diameter to determine
flatness.
3. If unevenness is revealed, machine head gasket
surface just enough to make complete contact.
5
CAUTION
Picture 7
33-5339
18539-99A
33-5338
18539-99B
CAUTION
WARNING
CAUTION