PerTronix Dougs Headers D4470 User Manual
Page 2
Part No. 0110-003030
Page 2 of 3
REV.2 3-5-13 DSL
on. This cut must be made as close to the weld as possible, it can even be slightly into
the weld. Refer to figure 1 for exact position of the cut.
6.
Cut the driver side connector pipe at the weld in the center of the truck. This cut must
be made as close as possible to the weld and be on the down stream side of the weld.
The successful completion of this cut will leave the inlet pipe to the Catalytic Converter
without any of the weld bead present.
7.
Unbolt and remove the connector pipes.
8.
Remove both front wheels.
9.
Remove both inner fender panels.
10. Remove the exhaust manifold heat shields.
11. Remove the stock exhaust manifolds.
12. Remove all the exhaust manifold studs from the cylinder heads
13. Clean the cylinder heads. Make sure that all residue is removed and the mounting
surface has no carbon or gasket material remaining.
ASSEMBLY
1.
Match the header gaskets with the appropriate header. Make sure that the EGR port
on the header is aligned with the gasket.
2.
Apply a THIN film of Ultra Copper Hi-Temp Sensor-Safe Silicone Sealer to the header
side of the header gaskets. Stick the gasket to the appropriate header. Masking tape
can be used to help hold the gaskets to the headers.
3.
Apply a THIN film of Ultra Copper Hi-Temp Sensor-Safe Silicone Sealer to the cylinder
head side of the header gasket.
4.
Install both headers utilizing header bolts (w/a small amount of anti-seize) and lock
washers supplied. Install all the bolts finger tight then tighten the bolts evenly to about
25 foot pounds of torque.
5.
Install the inner fender panels.
6.
Install the front wheels and torque the lug nuts to factory specification.
7.
Install the driver side connector pipe onto the Catalytic Converter inlet pipe. Attach the
connector pipe to the header utilizing the metal doughnut gasket and fasteners supplied
with the headers. Do not tighten at this time.
8.
The passenger side connector pipe needs to slide into the converter. I
f it doesn’t, file or
grind clearance on the converter inlet to allow the pipe to fit.
9.
Slide the passenger side connector pipe into the Catalytic Converter.