Triumph TR6 PI Operation Manual page 82

ENGINE
VALVE SPRINGS
Engine No. Petrol Injection Engine
Carburelter Engine
Engine No.
Double springo; Single spring
From
Inner
From
Eng. No. - Free length 1'56 in (39'624 mm)
Eng. No.
CP 25001
- Solid length (compressed) 0'730 in (\ 8'542 mm) CC 25001
-- Outer diameter 0'730 in (\ 8'542 mm)
- Wire diameter
0'076 in (\ '930 mm)
I,'ree length
I '59 in (40386 mm)
to Eng. No.
- Rate when filted 28'51b/in
- Solid length (compressed) (l'96 in (24'384 mm)
to Eng. No.
CP 75000
-- Working coils 6
Inner diameter 0'795 in (20'193 mm)
CC 75000
Wire diameter 0'148 in (3'759 10m)
Outer
Rate when Iitted 235 Ih/in
- Free length
1'57 in (39'878 mm) Working coils
3'/2
- Solid length (compressed) 0'918 in (23'32 mm)
- Inner diameter
0'795 in (20'193 mm)
- Wire diameter
0'136 in (3'454 mm)
- Rate when Iitted 150 Ib/in
- Working coils 4
Single spring
From
- Free length
152 in (38'60 mm)
From
Eng. No.
- Solid length (compressed) 0875 in (22'22 mm)
Eng. No.
CP75001
- Inner diameter 0'795 in (20'19 mm)
CC75001
- Wire diameter 0'152 in (386 mm)
- Rate when fitted 240 Ib/in
- Working coils 3-~~
Double springs
I'rom
From
Inner
Eng. No.
Eng. No.
- Free length
1'14 in (28'96 mm)
CF I
CR I
- Solid length (compressed)
0'552 in (\4'021 mm)
- Inner diameter
0'578 in (\4'68 mm)
and future
- Wire diameter
0'92 in (23'68 mm)
and future
- Rate when fitted
85'61b/in
- Working coils
4
Outer
As single spring fitted from Engines No, CP 75001/CC 75001
.'
Valve seat inserts
Inlet
Outside diameter
Height
Exhaust
Outside diameter
Height
Cylinder head maching dimensions
Depth of bore into head - Dimension (A)
Inlet - dimension (8)
Exhaust - dimension (C)
Radius at base of pocket
Valve seat angle
Valve seat chamfer - dimension (D)
12.29.18 Sheet 5
1'4875 . I "4885 in (37'783 - 37'808 mm)
0'247 - 0'250 in (6'274 6'35 mm)
1'2845 - 1'2855 in (."l2'626 - 32'652 mm)
0'247 - 0'250 in (6'274 6'35 mm)
0'250 - 0'255 in (6'35 - 6"45 mm)
1'484 - 1·485 in dia. (37.69 - 37'72 mm)
1'281 - 1'282 in. dia. (32'54 - 32'56 mm)
0'03 in (0-76 mm)
89° inclusive
0-040 - 0·045 in (1·016 _. 1-143·mm)
Triumph TR6M.nual. Part Nl\. 545.277 Issue:!