PerTronix JBA Exhaust 1624S-2 - Manual (Page 3)

5. Unbolt the H-Pipe assembly from the collector flanges of the factory headers. Insure that no pressure is
placed on the O2 sensor wires, disconnect if necessary. The H-Pipe does not need to be removed.
6. Unbolt the dipstick tube bracket from the engine and remove the dipstick tube. Unbolt the engine lift brackets
and discard.
7. Unbolt the Driver’s side exhaust manifold and remove. Remove the gaskets and any gasket material or any
carbon deposits that remain on the head surface. The use of a gasket removal agent will ease the removal of
any gasket material. Use care not to get debris into ports or spark plug holes. Clean excess carbon deposits
from the H-Pipe mating flange.
8. It may be necessary to grind the Oil Dipstick tube mounting tab to clear the header tube. See Illustration
below. Once it is clearanced, insure that it is clean, apply a small amount of sensor safe silicone around the end
of the tube where it slip into the block and reinstall the tube.
9. From above, slip the header into position. Slide the gasket into place and install the supplied header bolts and
lock washers. Anti seize is recommended on aluminium heads. Torque the bolts to 25 ft. lbs. on iron heads, 23
ft.lbs. on Aluminum heads starting from the center and working out.
10. Remove the passenger side EGR tube from the stock manifold. Unbolt the passenger side manifold and
remove. Remove the gaskets and any gasket material or any carbon deposits that remain on the head surface.
The use of a gasket removal agent will ease the removal of any gasket material. Use care not to get debris into
ports or spark plug holes. Clean excess carbon deposits from the H-Pipe mating flange.
11.
From above, slip the header into position. Slide the gasket in to place and install the supplied header bolts
and lock washers. Anti seize is recommended on aluminium heads. Torque the bolts to 25 ft. lbs. on iron heads,
23 ft.lbs. on Aluminum heads starting from the center and working out. Use the 3/8” X 2” bolt with the spacer
in the rear most header bolt hole. The EGR Tube tab will bolt to this bolt to space the tube out from it’s original
location.
12. Apply a light coating of Sensor Safe Hi Temp Silicone to the collector dome on both headers. Install the sup
plied collector bolts into the collector flange holes from the topside. Have an assistant hold a wrench on the bolt
head from the topside when putting the nuts on and tightening from the bottom side. The procedure is the same
for both sides.
13. Reinstall the spark plug wires and looms taking care not to let any wires rest against the header tubes.
14. Reinstall the negative battery cable.
15. Check that all bolts are tight. Make sure that all wiring, fuel lines, transmissions lines, brake lines etc are clear
of the headers and the exhaust and relocate as necessary.
16. Start the engine and let it warm up. Check for leaks. Shut engine off and let it cool down. Check to make
sure all fasteners are tight
17. Periodically check and retighten the header bolts.