Owners manual

INS5402
140 Blaze Industrial Parkway, Berea, OH 44017 l P: 440.891.0999 F: 440.891.1868
10
10/1/2017
[e-mail] l www.corsaperformance.com
Long Tube Headers
1.875” Primary, 3.0” Collector
2014-18 Corvette C7/Z06
PN 16004, 16104
0
Installation Instructions
CORSA EXHAUST
8. Connect the wires for the front O2 sensors at this time. Ensure the front sensors have been installed in the
collectors.
9. Begin tightening the header bolts on both sides of the
engine. PRO TIP: Tighten all bolts to 7.5ft-lb (90in-lb)
first using the torque wrench and socket.
DIAGRAM TO LEFT: Start by tightening the bolts in
the middle of the flange and working outwards to the
front and rear.
Return to the middle, this time tightening to 15ft-lb
(180in-lb) working outwards to the front and rear.
Check to make sure the headers are roughly even and
level within the car. NOTE: The header bolts should
be checked and re-torqued if necessary after the first
heat cycle and periodically after.
10. Locate the two header adapter elbow pipes with O2
bungs, two 3” clamps, and the rear O2 sensors. Install
the sensors into the pipes using a 22mm wrench or
O2 sensor socket and ratchet. Note which sensor
goes on which side of the vehicle. The pipes are
designed to position the sensors vertically in the
vehicle cavity. ONLY work on one side at a time.
Slide the clamp over the adapter’s expanded end
with the bolt nearest the engine. Slide the adapters
onto the header collectors. Plug the O2 sensors into
the vehicle harness. Use zip ties or similar material to
ensure the wires will not contact the exhaust.
11. Install the CORSA X-Pipe (part number 14761) by
referring to the instructions included in the 14761 kit,
then continue at Install Step 13 on this instruction
sheet. If reinstalling the factory X-Pipe, continue to
Install Step 12.
12. IF USING FACTORY X-PIPE: Use a small flathead
screwdriver, or a similar tool, to remove the factory
donut gaskets from the factory X-Pipe. Reinstall the
X-Pipe onto the axle pipes. Support them with a jack
stand, screw jack, or similar device.
Reinstall the two bolts from Removal Step 20 into
the transmission bellhousing. Install the two donut
gaskets supplied in header gasket kit. Align the X-Pipe
with the adapter elbows and flanges. Reinstall the
nuts retained from Removal Step 18 on the X-Pipe
studs but DO NOT tighten them at this time.
13. This step will be easier with the help of another
person. Align the adapter elbows (with installed O2
sensors) so the flared end of the adapter meets the
X-Pipe straight. WARNING: Align adapters so that the
sensors DO NOT rub on any lines, heat shields, or the
body. The overlap on the driver or passenger side slip
fit may need to be adjusted to make sure the X-Pipe
is centered in the cavity.
While one person aligns the X-Pipe in the cavity, the
other person should tighten the nuts/studs on the
factory X-Pipe or nuts/bolts on the CORSA X-Pipe.
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