Owners manual

INS5401
140 Blaze Industrial Parkway, Berea, OH 44017 l P: 440.891.0999 F: 440.891.1868
7
10/1/2017
[e-mail] l www.corsaperformance.com
2015-2017 FORD MUSTANG GT 5.0L V8
Long Tube Headers: 1.875” Primary, 3.0” Collector
Part #: 16017, 16117
REMOVAL INSTRUCTIONS
FACTORY MANIFOLD
16. Safely lift the engine within the vehicle. There are several ways to complete this step:
We suggestion the use of a transmission jack or an engine hoist from the top side of the engine bay.
CORSA Performance defers the decision to the installer and their preference.
The engine needs to be lifted at least an inch but more is better. The transmission housing will contact
the tunnel and firewall preventing the engine from being lifted too high. NOTE: This instruction sheet
assumes the engine is lifted straight and equally on both sides. If necessary, it is possible to complete
the install on one side at a time.
Alternatively, a solid lifting point for a screw jack, or similar device, is located near where the
transmission meets the engine block to either side of the oil pan. If this area is used it will rock the
engine side to side, making it possible to: remove the factory manifold from one side, install the header,
lower the engine, and repeat on the opposite side
17. Remove the engine mounts from both sides of
the engine using a 3/8” drive ratchet (3”
extension if necessary), 13mm deep and shallow
sockets. One bolt on the passenger side is
“blind” and has a 15mm nut on it to secure a
ground strap to the stud. Save bolt and 15mm
nut for reinstallation (Install Step 10).
18. Using a 13mm socket and ratchet or ratcheting
wrench, remove eight nuts on each side securing
the factory manifolds to the heads. (Save nuts to
return vehicle to stock). WARNING: Take care
when removing the factory manifolds from
the vehicle. The O2 sensors are still in place
and can be easily damaged.
19. Remove the 8 studs on each side of the head
using the E8 Torx socket and ratchet. Save one
stud for Install Step 3. WARNING: Take care
when removing them as the heads are aluminum
and the studs are steel. One stud on the
passenger side in the front may require the use
of a 6mm ratcheting wrench to remove.
WARNING: This is not ideal as it could easily
round off the Torx pattern on the end of the stud.
We recommend a “jam nut” process. Thread
two nuts onto the stud with the flat flanges facing
each other. Loosen the stud by turning only the
nut closest to the head as it will lock/stop against
the nut near the end of the stud.
20. Remove the O2 sensors from the factory
manifolds and catalytic converters using an O2
sensor socket and ratchet or 22mm wrench.
PRO TIP: Label the location of each sensor so
they can be installed into the same location
within the CORSA Performance headers.
This concludes the removal of the factory
exhaust manifolds.