JBA 1678SJT - Manual (Page 3)

Driver’s Side Header
5. Remove the three screws attaching the heat shield to the manifold. Now remove the heat shield.
6. Remove the nuts and studs attaching the manifold to the head. Remove the dipstick noting where it inserts
into block. Remove the manifold. (On some models it may be necessary to separate the steering shaft at the slip
joint near the firewall)
7. Clean the head surface of any carbon deposits with a scraper or wire brush (be careful not to gouge the head
surface).
8. Slip the header and dipstick into position. Install the header using the fasteners, lock washers and gaskets
provided.
9. Apply a small amount of anti-seize to the new headers bolts. Install the headers using the supplied bolts,
washers, and gaskets. Torque to 13 ft/lbs.
Passenger Side Header
10. Remove the three screws attaching the heat shield to the manifold. Remove the heat shield.
11. Disconnect the EGR tube from the rear of the manifold.
12. It will be necessary to removed the motor mount nut (under the frame) and raise the engine approx.. 1”.
Remove the nuts and studs attaching the manifold to the head. Remove the manifold.
13. Clean the head surface of any carbon deposits with a scraper or wire brush (be careful not to gouge the head
surface).
14. Slip the header into place, and loosely attach the EGR tube to the header. Replace motor mount nut. Tighten
the EGR tube.
15. Apply a small amount of anti-seize to the new headers bolts. Install the headers using the supplied bolts,
washers, and gaskets. Torque to 13 ft/lbs. Apply a small amount of Hi-temp RTV (sensor safe) to the exhaust
pipe flare and re attach the exhaust pipes to the headers.
16. Check to ensure that there is adequate clearance on all brake lines, wire looms, A/C lines, etc.
17. Install the inner fender panels and front wheels.
18. Reconnect the battery.
19. Re-check everything!
20. Start the engine, check for leaks and test drive. Then let engine cool and then re-torque the header bolts.
21. Periodically check and retighten the header bolts.