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©2005 Edelbrock Corporation
Rev. 1/05
Catalog #65912 &65913
DA/mc
Page 2 of 3
4. With wire ties, route any hoses, wires or lines
away from headers as necessary.
5. Re-install your factory heat riser valve using the
supplied flat gasket along with the factory
exhaust pipe and supplied 3/8 x 3 Hex bolts,
lockwashers and flatwashers. Do not
overtighten!
NOTE: If your vehicle has an early style heat
riser valve, without the tapered flange to seal
against the flare of the exhaust pipe, use the
donut gasket with the smallest I.D. steel ring on
the outlet of the heat riser, or you can purchase
the updated later model heat riser valve
#J3238998 from a Jeep dealer or Napa #600-
1828.
6. Install factory exhaust pipe onto left header
using supplied graphite donut gasket, 3/8 x 2
hex bolts, lockwashers, and flatwashers. Do
not overtighten!
FINAL INSPECTION
1. Check all lines (hydraulic, vacuum, air
conditioning and fuel) to ensure there is
adequate clearance to headers. Use wire ties as
needed.
2. Re-connect battery.
3. At this point, it is a good idea to look everything
over and make sure that nothing was missed in
assembly.
4. Start vehicle and bring up to normal operating
temperature. Check for possible leaks.
5. Turn engine off and let cool. Tighten all bolts
again. Flange bolts should be tightened starting
with the center bolts working out.
ASSEMBLY
1. Install flange gaskets and headers from top.
Install header bolts, lock washers, and thick flat
washers supplied (NOTE: Thick washers are to
be used on slotted holes of port flange.), ensure
proper alignment and tighten bolts starting with
the center working out towards ends of flange.
2. Re-install spark plug wires and dipstick tube
retainer bracket.
NOTE: The installation kit includes a 2-piece
clamp on heat stove assembly. Using the two
supplied hose clamps, it can be clamped to the
first primary tube on the passenger side header,
if needed.
3. Re-install air cleaner and cold air tube and install
supplied heat stove flex tube. Use supplied
adapter with clamp on air cleaner housing, if
needed.
DISASSEMBLY
1. Disconnect negative battery cable.
2. Raise vehicle and disconnect 02 sensor, if
equipped.
3. Unbolt stock exhaust pipes from manifolds.
4. Remove heat riser valve, clean and check for
proper operation. Replace, if necessary.
5. Remove cold air tube and heat stove hot air
tube, if equipped and remove air cleaner
assembly.
6. Disconnect and move spark plug wires out of
the way.
7. Remove dipstick tube retainer bracket attached
to valve cover bolt.
8. Unbolt and remove manifolds.
9. Clean exhaust flange gasket surfaces of cylinder
head thoroughly.
WARNING: The use of "Thermal Wrap" or any aftermarket coating process will void the warranty on your
headers. Those products can cause excessive heat and moisture buildup resulting in corrosion and early
failure of the system.
NOTE: High temperature spark plug wires and boots are recommended to withstand heat from Headers.