PerTronix Dougs Headers D627-R - Manual (Page 2)

Part No. 0110-003082
Page 2 of 3
rev. 1 11-19-13 DSL
3. Remove bolts attaching stock manifolds to the head pipes.
4. Remove spark plug wires and spark plugs.
5. Remove the Oil Filter.
6. Remove the manifold bolts from each manifold.
7. Remove the manifolds or old headers from the car.
8. Remove the gaskets and any gasket material or any carbon deposits that remain on the
head surface. The use of a gasket removal agent will ease the removal of any gasket
material.
INSTALLATION
1. The #1 header tube on each side has a two bolt connector and the header flange has
been cut almost all the way through. We have done this to ease installation. In some
applications it is easier to cut the flange the remainder of the way and separate these
tubes to be installed individually.
2. The #4 header tube, which is the cross over is also cut almost all the way through at the
flange. These should be cut at the flange to separate and ease installation.
3. Once the header flanges have been cut, ease the main header into position from below.
This is a VERY tight fit and needs to be finessed in order to install. We recommend
removing the motor mounts and supporting the motor from below to allow the header to
slip into place.
4. Once you have the main header in place, insert the header gasket and install a couple
of bolts to support the header. We have included two header bolt lengths to help with
tight fitments. Repeat for the opposite side.
5. The # 1 tube (if removed) and the #4 tube on each side can now be fed into place and
bolted to their respective 2 bolt connector flanges and to the cylinder head.
6. Install all remaining bolts, with lock washers, and tighten evenly.
7. Reinstall motor mounts and double check clearances.
8. Reinstall spark plugs and wires, oil filter, and re-connect the negative battery cable.
IMPORTANT CHECK LIST
Be sure that all brake lines and fuel lines are clear of headers and/or connector pipes.
All spark plug wires, battery cables, or other electrical components should be clear of
headers and/or connector pipes.
STARTING THE ENGINE
Start the engine and allow it to warm up to operating temperature. Check for any unusual
noises or exhaust leaks. If every thing is OK, stop the engine and tighten all bolts while
the engine is still warm.
NOTE: Check the bolts periodically to make sure they have not loosened. Re-tighten
after the first 500 miles and then again at 1000 miles.