ka24de cam install Instructions Faq

[lodownlv]

Hello all This is to everyone to needs it and to the people that could not give me a straight answer to cam instalation. This is for the ka24de with with dual chains on cams. Credit is Deserved

CAMSHAFT REMOVAL INSTRUCTIONS
FOR NISSAN KA24DE ENGINES
W/DOUBLE ROW CHAIN

1. Remove the plug wires, and valve cover from the engine.
Use caution not to drop anything into the engine.
2. With the parking brake on, and the car out of gear
(neutral), rotate the crankshaft clockwise until #1 cylinder
is at TDC (top dead center) with all of it’s valve
closed. To insure that this is correct, look at the crank pulley
(TDC is the second mark from the left, it will usually be
marked with yellow paint). Also check that the cam lobes on
#1 cylinder are pointing away from the center of the motor,
if they are pointing toward the center, rotate the motor one
full rotation clockwise. Again check the crank pulley to see
that it is on TDC.
3. Before removing the cam sprockets, the sprocket bolts
must be loosened. Using a 24 M.M. (15/16ths“) wrench or
socket on the bolt and a 1” open end wrench on the cam
hex (in front of the front lobe), break loose but don’t remove
the bolts.
4. Carefully mark the chain links that are aligned with the dots
on the gears. The dots and the marked links
should be exactly the same after installing the
cams (unless JWT adjustable sprockets
are used). It is impossible for the chain to jump
on the lower sprocket because their isn’t
enough room between the sprocket and cover.
5. If the chain tensioner does not have a shoe retainer
(early KA24DE engines), it must be
locked by inserting a locking pin made from a
piece of wire that fits in the pin hole on the front
of the tensioner. The shoe may pop out and
have to be reinserted if this is not done.
6. Remove the upper chain guide above the cam
sprockets (not used on later KA24DE). Remove
the previously loosened cam sprocket
bolts and pull the sprockets away from the
cams. Let the chain/sprockets lay relaxed away.


CAMSHAFT INSTALLATION INSTRUCTIONS
FOR NISSAN KA24DE ENGINES
W/DOUBLE ROW CHAIN
1.Note the positions of the
dowel pin on each cam, the cams
must be installed at the same positions.
2. Mark the cam bearing caps if not already
marked on both the intake and exhaust
sides and note that the arrows are pointing
to the front of the engine. Evenly remove
the bearing caps one turn of each
bolt at a time until all are free of tension.
Remove the bearing caps and place
them in a clean area in the same order they are
removed. Remove the cams, caution should
be taken to insure that they don’t bind on the
thrust surfaces of the first journal (this is also critical
when installing the new cams).
3. Measure the thickness of each follower shim and
write it down in case you need to change it later if
the clearance is not within the acceptable range.
4. Finaly clean and check for any damage or burrs that may have occurred. Oil gallery plugs MUST BE installed in the rear of each cam !
5. Apply a coating of assembly
lube or motor oil to all journals and lobes. Carefully
lay the cams in their correct positions. Note that
some cams have two dowel pin holes to facilitate
their use as either an intake or an exhaust cam. The in-take cam is the one that has the dowel pin aligned with the #1 lobe (see
diagram).
6.Reinstall all of the bearing caps. Evenly tighten 1/2 turn at a time on each bolt
until all of the caps are snug (1.4 ft-lb and again to 4.3 ft-lb). Then final torque
the bolts from the center bolts outward to 6.7 to 8.7 ft-lb.
7.Attach the sprockets to the cams and screw the bolts
in by hand. If you have positioned the cams dowels correctly,
only a slight rotation of the cams will be needed to
engage the dowel and sprocket. Check to see that the
sprocket is fully seated against the cam before torquing
the bolt tight. Always use a 26 m.m. or 1” wrench on the
cam hex to back up your torque wrench (never use the
chain for resistance)! Torque the cam sprocket bolts to
101 to 116 ft-lb.
8.Check that your original chain marks still
align with the dots on the sprockets and the lobes still
point away from the center of the engine. Reinstall the upper chain rail (if used)
and remove the tensioner locking wire you installed (if used). If the first lobe oneither cam is pointing straight up, you probably have the cams on the wrongside of the engine!
9.Inspect your work carefully. Recheck the cam timing, the crank should be onthe TDC mark.