Breaking in
an enigne with a roller camshaft is important.
Metal particles are created during break-in.
This is the biggest issue for the bearings in
the roller lifter.
Most
camshafts come with specific break-in
procedures. The following procedure could apply
to any roller camshaft. The specific
instructions for your camshaft may vary
slightly. Whenever possible, follow the
manufacturer's instructions.
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Installation Tips
• New
lifters are not always
required with a new
roller camshaft.
•
If
reusing lifters, clean
and inspect them
thoroughly to ensure
they are still good.
• Use
an Assembly/Break-In
Lube to coat the cam
lobes and distributor
gears.
• Use
Break-In Oil.
•
Be
sure to soak lifters in
the break-in oil.
• Use
a finer micron filter
during break-in.
• Do
not "pump up" hydraulic
lifters.
• Do
not exceed Recommended
Valve Spring Pressures.
•
Performance engines
using high valve spring
pressure should use a
lighter set of springs
for the break-in
procedure.
•
If you
have double or triple
springs, remove the
inner springs during the
break-in procedure.
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Procedure
1.
Install the Camshaft.
2.
Set
the Valve Lash or
Preload as recommended
by the manufacturer.
3.
Prime
the Oiling System.
4.
Set
the Initial Ignition
Timing.
5.
For
carbureted engines, make
sure fuel bowls are full
and any air is bled from
the fuel lines.
6.
Start
the engine and
immediately raise rpm to
3,000.
7.
Vary
rpm between 1,500 and
3,000 for the next 20-30
minutes.
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a.
Use a
slow, steady
acceleration/deceleration
pattern.
8.
Shut
down the engine and let
it cool.
9.
Drain
the oil and change the
oil filter.
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a.
This
removes any metal
particles from the
break-in process.
10.
Refill
the engine with break-in
oil.
The
initial break-in is now
complete. After the next 500
miles of normal driving, change
the oil and oil filter again.
•
If you
choose a synthetic oil,
we recommend putting
about 5,000 miles on the
camshaft with
conventional oil before
switching.
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Welcome to visit us
YuHuan
NewCams
Machinery
Manufacture Co.,Ltd.
We complete every process carefully and
provide the best service for
each vehicle.
