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TR6 Master Catalogue—Vol. 2 (Green)
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V2-105
TRIUMPH TR6
PLATE HB
HIGH-PERFORMANCE COMPONENTS
INTERNAL ENGINE COMPONENTS
HIGH-PERFORMANCE COMPONENTS--INTERNAL ENGINE COMPONENTS
HARDENED VALVE SEATS
HB17
Insert,
valve seat, intake valves, all TR6
6
HB18
Insert,
valve seat, exhaust valves, fitted up to
6
eng. no. CF1/CR1
Insert,
valve seat, exhaust valves, fitted after
6
eng. no. CF1/CR1
TEFLON VALVE SEATS,
manufactured by Richard
Good at Good Parts
HP
Valve Seat Kit,
Teflon seats; set of twelve
1
ROCKER SHAFT UPGRADES,
for stock rocker shafts
HB19
Rocker Shaft,
tuftrided; TRF's stock rocker shaft
1
has tuftrided surface such as other companies
sell as high-performance
HB20
139897/NB
Rocker,
no. 1, new rocker modified by installation
6
of replaceable oilite bushes
139896/NB
Rocker,
no.2, new rocker modified by installation
6
of replaceable oilite bushes
6
1090230B
Bush,
oilite; to replace bushes used in modified
12
rockers, as listed above; note that stock
rockers must be overbored if these are to be fitted
HP
Pedestal Kit;
heavy-duty clamping pedestals;
included on Roller Rocker Assemblies; may be
used with standard rockers with minor modification
HB21
Spacer Kit,
rocker shaft; solid steel tubes replace springs
1
to maintain positive location of rockers on the shaft
HB22
Shim,
rocker pedestal; used to maintain correct
A/R
rocker geometry with milled heads, high-lift
cams, and other modifications
Plate No.
Part No.
Description
No. Off
ROCKER SHAFT ASSEMBLIES,
rebuilt and upgraded
stock components; shafts are hard-chromed and
resized; rockers are rebored and rebushed; ready to
use; send old assembly, or pay refundable core charge
HB23
Rocker Shaft Assembly,
rebuilt and upgraded; as
1
stock aside from upgrades described above
ROLLER ROCKER ASSEMBLIES,
by Richard Good at
Good Parts
Roller Rocker Assembly,
1.55 : 1 ratio
1
Roller Rocker Assembly,
1.65 : 1 ratio
1
Note:
Roller rockers run with needle bearings on a
hardened rocker shaft.  The rocker contacts the
valve stem via a roller bearing on the rocker tip,
reducing side loads which wear valve stems and
guides.  Stock rockers have a ratio of 1.43 : 1,
and the higher ratio of Good Parts roller rockers
improves engine performance by opening valves
faster and farther.  This increases air and fuel
flow into the cylinders to provide a net
horsepower increase of as much as 10%.
ALLOY FRONT AND REAR ENGINE PLATES,
HB24
Engine Plate,
rear, high-performance alloy material,
1
HB25
Engine Plate,
front, high-performance alloy material,
1
all TR250, TR6, up to comm. no. CF35000,
Engine Plate,
front, high-performance alloy material,
1
after comm. no. CF35000, 1975-76`
Plate No.
Part No.
Description
No. Off








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