2026 KPMI Full Catalog V1 - Flipbook - Page 282
TRIUMPH PRE-UNIT 500/ 650 1951-'62
®
TRIUMPH
Valves • Black Diamond™ • Black Nitroneg Stems • For Pre-Unit 650 1956-1962
Stem Diameter
Tulip
O. L.
Remarks
1.500"
0.3105"
R1.4
3.790"
Standard
1.343"
0.3100"
15º
3.775”
Standard
KPMI P/N
Type
Head Diameter
70-70380
Intake
38.10mm
70-70385
Exhaust
34.11mm
Welded tips (no lash caps required).
Valve Guides • C630 Bronze • Manganese Bronze
A
B
C
D
E
F
G
Intake / Exhaust
C630 Bronze
Manganese
0.3105” 0.5010” / Std.
70-0331
70-0331-M
+0.002”
70-0332
70-0332-M
+0.004”
70-0333
70-0333-M
+0.006”
70-0334
70-0334-M
+0.015”
70-0840
70-0840-M
Note : No seal required.
+0.050”
70-4033
70-4033-M
For sizing KPMI® Cast Iron and Manganese Bronze Valve guides please use Reamers #GR-3115. For a complete listing of hones and reamers please see
component section in back of catalog.
0.460”
0.610”
0.840”
1.390”
0.680”
A
B
C
D
E
F
G
0.315"
0.405"
0.820”
1.370"
0.680"
0.3105"
0.5010" / Std.
Valve Guides • Manganese Bronze
Intake
70-0331S
70-0332S
70-0333S
70-0334S
70-0840S
70-4033S
+0.002”
+0.004”
+0.006”
+0.015”
Machined for seal, seals sold separately.
Exhaust
+0.050”
Valve Guide Seals • Viton® • 6.00mm Coversion Systems
Stem Diameter
5/16”
O.L
0.465”
Seal O.D.
Seal Style
0.550”
1
A
0.500”±0.010”
Part Number
71012-4
71012-8
71012-16
71012-50
71012-100
Designed for these guide specs
B
C
D
0.445”
0.230”
0.280”
Quantity
Pkg. of 4
Pkg. of 8
Pkg. of 16
Pkg. of 50
Pkg. of 100
Type
Intake
Exhaust
Quantity Discount
0%
0%
Less- 10%
Less- 15%
Less- 20%
Thrust Washer • Transmission • C674 Bronze • For Pre-Unit 650’s 1960-1962
KPMI P/N
Material
O.D.
O.L
Thickness
Quantity
70-0474
Bronze
1.280”
0.880”
0.090"
Pkg. of 1
264
Note: Transmission thrust washer for needle bearing gearbox
order 650-557-2046
