PerTronix JBA Exhaust 1851S - Manual (Page 3)

3. Driver side: On air pump equipped vehicles remove the air tube from the manifold and slip it loose from the
rubber hose at rear of engine.
4. Remove the thru-bolt from the steering shaft, and slip the steering shaft apart. Now unbolt the manifolds from
the factory exhaust system.
5. Remove the six bolts holding the exhaust manifold to the head, then remove the manifold.
6. With the manifold out of the way, clean any carbon deposits left on the head using a small wire brush or simi-
lar instrument.
7. Install the new header using the supplied gaskets, bolts, and lock washers. Apply anti seize to the threads and
torque to 18 ft/lbs on Aluminum heads or 25 ft/lbs on Iron heads.
8. Reinstall the spark plug wires, reconnect steering shaft, reinstall air tube (if equipped) using gasket and fas-
teners provided.
9. Passenger Side: Remove the air tube (if equipped), remove plug wires and set aside. Disconnect the EGR
tube from the manifold if equipped, remove the bolt attaching the dipstick tube bracket to the head then remove
the dipstick tube.
10. Remove the six bolts attaching manifold to head, remove manifold.
11. Clean head surface as in step #6.
12. Install the new header using the supplied gaskets, bolts, and lock washers. Apply anti seize to the threads
and torque to 18 ft/lbs on Aluminum heads or 25 ft/lbs on Iron heads.
13 Reconnect the EGR tube if equipped using gasket and hardware supplied.
14. Reinstall dipstick tube, spark plug wires, and air tube (if equipped).
15. Using the supplied fasteners, reconnect the factory exhaust to the headers using the supplied gasket on the
driver’s side. We recommend that you apply a small amount of hi-temp silicone on the passenger side collector
dome.
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. Retorque after 100 miles. Periodically check and retighten the header bolts.