- PREVIOUS
- NEXT
478
Stock Replacement Valves
Sifton
TM
V- Twin
TM
Model & Year Type
OEM
Stainless Nitrate Steel Nitrate Chrome Stainless Stainless
Steel
Steel
Steel
Steel Steel
Steel
Nitrate
Shovel
Intake 18075-81
Exhaust 18086-81
Panhead
1948-65
Intake
1
/
8
" O.S.
Exhaust
1
/
8
" O.S.
Shovel
1966-85
Intake
1
/
8
" O.S.
Exhaust
1
/
8
" O.S.
Shovel 1966-85 Intake 18074-66
11-2000
by Crane
Exhaust 18082-57
Model
Melonite Titanium
Melonite
and
Application
Roller Hard Special Nitride Roller Hard Special Black
Racing Razor
Year
Burnish Chrome Black Gold Coat Burnish Chrome Black Diamond
TM
Black
Stem (1) Stem (2) Stem (3) Stem (4) Stem (1) Stem (2) Stem (3) (6)
(4)
(5)
11-6000
11-6027
11-6111
11-6015
11-6028
11-6111
11-6016
11-6089
11-6090
Panhead
1948-1965
Shovelhead
1966
and
Later
Shovelhead
1984-84
E xhau st
18 08 2-5 7
1/ 16 " O .S .
I n t ake
1 80 71 -4 8
I nt ake
18 07 4-6 6
5 / 32 " O. S .
1 / 16 " O .S .
Exh aust
1 808 6- 81
5 / 32 " O .S .
I n t ake
1 80 75 -8 1
Exh aust
1 80 86 -81
ROWE VALVES
PRECISION MACHINE
Forged & Shot Peened Head
Fully Machined Head
Stainless
Panhead 1948-65
VT No. Type Head Dia. Stem Dia. OEM
11-9028 Int. 1
3
/
4
stock .3765 stock 18074-48
11-9011 Exh. 1
3
/
4
stock .3745 stock 18082-57
Note: Ni is Nitrate finish.
Manley Stainless Valve machined from 1-piece forging with a
swirl polished finish & chrome plated stem. Sold pairs.
VT No. Type Head Dia. Stem Dia. OEM
Shovelhead 1966-85
11-9012 Int. 1
1 5
/
16
stock .3765 stock 18074-66
11-9013 Ni Int. 1
1 5
/
16
stock .3765 stock 18074-66
11-9011 Exh. 1
3
/
4
stock
.3745 stock 18082-57
11-9014 Ni Exh. 1
3
/
4
stock
.3745 stock 18082-57
Valves by Rowe or Precision Machining (Kibblewhite). Intake valves are made of 8645 heat treated valve steel and the exhaust valves are made
of 21-2N heat treated non-magnetic stainless steel. These valves are available with the following stems and heads:
(1) Roller Burnished Stem: Roller burnishing smooths the finest grind finish (16 microinch) to a 4 microinch.
(2) Hard Chromed Stem: Very slick and hard. The standard in wear resistance.
(3) Melonite, Special Black Stem: This is a heat treating process developed and patented in Germany. Gives the valve a Black Smokey look.
Very hard and slipper y. Currently being used on O.E.M. valves available in Rowe or Black Diamond brands.
(4) Racing by Kibble White Precision Machining feature a sharper profile angle to maximize flow, 11-6015 has 2.00 head, 11-6016 has
(5) Razor Back by Kibble White are one piece forged EV-8 stainless steel, fully CNC machined with hard chrome stems.
(6) Black Diamond: One piece stainless steel valve with a stellite tip and black nitrone impregnated stem to improve wear properties and
reduce friction.
Manley's Street Master" intake & exhaust valves feature stainless
steel construction, chrome plated stems, hard tips, smooth turned
underhead angle & radius, forged combustion dish & machined
combustion face r im.
VT No. Type Head Dia.
Stem Dia. OEM
Shovelhead 1966-85
11-9020 Int. 1 15/16" stock .3765 stock 18074-66
11-9021 Exh. 13/4" stock
.3745 stock 18082-57
1948-84 FL, 74 & 80 Thin Stem Stainless
11-9038 Exh. 1.780 o/s .3385 u/s
Note: 11-9038 has steep tulip shape head design for
maximum flow in rpm engines. Thin stem valves use smaller than
stock stem diameters to achieve tighter inertia weight and
increased flow, requiring special valve guides, valve keys and col-
lars. Both are .030" longer than stock to accommodate increased
valve lift & travel.
Thin Stem Hardware for Pan/Shovel 1948-81
VT No. Description
11-9614 Chrome Moly Valve Keys (Set of 8)