S&S Cycle Cylinder Heads for Harley-Davidson Twin Cam 88 Engines - Manual (Page 8)

1. Cylinder head - All S&S for Twin Cam 88 ®
(See S&S catalog for replacement cylinder
heads, cylinder head sets, and kits.)
2. Valve
89cc chamber
Intake - 2.000” dia. . . . . . . . . . . . . . . . . .90-2000
Exhaust - 1.605” dia. . . . . . . . . . . . . . . .90-2001
Intake .085” longer - 2.000” dia. . . . . .90-2004
Exhaust .085” longer - 1.605” dia. . . . .90-2005
79cc chamber
Intake - 1.940” diameter. . . . . . . . . . . . .90-2025
Exhaust - 1.575” diameter. . . . . . . . . . .90-2026
3. Valve seat
89cc chamber
Intake - 2.000” diameter. . . . . . . . . . . . .90-2002
Exhaust - 1.605” diameter. . . . . . . . . . .90-2003
79cc chamber
Intake - 1.940” diameter. . . . . . . . . . . . .90-2027
Exhaust - 1.575” diameter. . . . . . . . . . .90-2028
4. Valve guide - Intake or Exhaust
All
Standard (H-D ® #18112-92) . . . . . . . . . .90-2210
+.001” (H-D ® #18130-83C) . . . . . . . . . . .90-2211
+.002” (H-D ® #18133-83A) . . . . . . . . . . .90-2212
+.003” (H-D ® #18131-83C) . . . . . . . . . . .90-2213
+.030” . . . . . . . . . . . . . . . . . . . . . . . . . . . .90-2219
5. Valve spring shim
.015” . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90-2086
.030” . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90-2087
6. Valve guide seal - Intake or Exhaust
(H-D ® #18001-83A) . . . . . . . . . . . . . . . . .90-2008
7. Valve spring kit
.640” lift - steel top collars . . . . . . . . . .90-2077
.640” lift - titanium top collars . . . . . . .90-2078
8. Head bolt assembly
All S&S Twin Cam 88 ® (includes head bolt
washer)
88”, 95”, 100” & 107” incl. washer #50-7088
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .93-3030
116” incl. washer #50-7091 . . . . . . . . . .93-3037
9. Head bolt washer
.100” . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50-7088
.250” (H-D ® #6016) . . . . . . . . . . . . . . . . .50-7091
10. Exhaust port stud - (H-D ® #16715-83)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50-8082
11. Nut, HSFH - 5 ⁄
16
-24 (H-D ® #7593) . . . . . .50-5025
12. Exhaust pipe gasket (H-D ® #65324-83)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .93-1005
13. Intake manifold -
(Refer to manifold section of S&S Catalog.)
14. Manifold mounting screw
SH - 5 ⁄
16
-18 x 1” (H-D ® #3201WA) . . . . .50-0101
HH - 5 ⁄
16
-18 x 1” (H-D ® #3987,4017) . . . .50-0108
15. Flat washer - 5 ⁄
16
” (H-D ® #6016,6702) . .50-7034
16. Manifold mounting flange
Front (H-D ® #27009-86A) . . . . . . . . . . . .16-0232
Rear (H-D ® #27010-86A) . . . . . . . . . . . . .16-0233
17. Manifold O-ring seal . . . . . . . . . . . . . . .16-0235
18. Head gasket -
3 3 ⁄
4
” x .046” . . . . . . . . . . . . . . . . . . . . . . .93-1045
3 7 ⁄
8
” x .046” . . . . . . . . . . . . . . . . . . . . . . . 93-1044
4” x .046” . . . . . . . . . . . . . . . . . . . . . . . .93-1043
19. Alignment dowel - base and head . . .50-8177
20. O-ring, Alignment dowel,
Base (All bore sizes)
Head (3 3 ⁄
4
” bore only)- . . . . . . . . . . . . .50-8008
21. Plug, HH - 14mm, . . . . . . . . . . . . . . . . . .90-4916
22. Washer, compression - 14mm
.507” x .705” x .047” . . . . . . . . . . . . . . .50-7094
23. Head mount bolt
3 ⁄
8
-16 x 1 1 ⁄
4
” - (H-D ® #4716W) . . . . . . . . .50-0168
24. Flat washer - 3 ⁄
8
” - (H-D ® #6019) . . . . . .50-7051
8
Replacement Parts for S&S ® Cylinder Heads for Harley-Davidson ® Twin Cam 88 ®
Use this line drawing to identify the replacement part number required. Parts interchangeable with stock Harley-Davidson ® parts are listed with the
Harley-Davidson ® number of the parts they replace. If no Harley-Davidson ® number is provided, the S&S part cannot be used as a direct replacement for
the Harley-Davidson ® part and vise versa. Year groups listed apply to S&S parts only; do not attempt to identify stock Harley-Davidson ® parts by these
groups. Abbreviation “NS” means part is not shown in diagram.
All reference to Harley-Davidson ® part numbers is for identification purposes only. We in no way are implying that any of S&S ® Cycle’s products are
original equipment parts or that they are equivalent to the corresponding Harley-Davidson ® part number shown.