JBA 1628SJT User Manual

Corporate Ofce: PerTronix Inc. 440 E. Arrow Highway, San Dimas, California 91773 * Phone [phone] • FAX [phone]

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Installation Instructions

and Warranty Information

Part #1627S 1987-95 F-150/Bronco 5.0 L

Part #1627S-1 1996 F-150/Bronco 5.0L
Part #1628S 1986-96 F-150/F-250/Bronco 5.8L
Part #1628S-2 1993-95 5.8L Lightning
Part #1628S-3 1987-96 F-250 5.8L w/Port Air Inj.
Part #1628S-4 1987-96 F-250 5.8L w/Dual Air Inj.

CARB EO # D-57-27

Read all instructions carefully before attempting installation.

Rev. 3 2-28-13 DSL

PerTronix© thanks you for choosing JBA HEADERS, the best fitting, highest quality header on the market. In
order to realize the full potential of our good fit, please read and understand these instructions completely prior to
starting work.

Check to make sure you received the proper parts for your application. The header number will be stamped on the
engine flange. If you are unsure you have received the proper parts call before you start work.

Be sure to work safe! Whenever you work under the vehicle be sure that it is located on level, solid ground and is
supported by adequate safety stands! Remember: Hot asphalt will not support most jack stands!

Many factors affect the installation of headers, some of which are broken or aftermarket motor mounts, accidents
that impact the configuration of the frame, and/or the installation of different engines or aftermarket cylinder
heads.

Attention Customers breaking in new engines: Due to the extreme heat generated during the break-in process,
the appearance of the ceramic coating may be altered in certain areas. The protection characteristics and thermal
barrier properties of the coating is never compromised. It is recommended that a cast iron manifold or old set of
headers be used for this process.

Notice: The coating of these headers can be marred or scratched during installation. If the header needs to be re­turned and is damaged, you will be charged for recoat.

JBA uses sealing beads on all its headers. We have found that when installed correctly, the raised bead around each port
increases the pressure exerted on the gasket directly adjacent to the port and effectively prevents leaking gaskets. It is
normal for the flange to be raised off the cylinder head the thickness of the sealing bead. It is important when installing
the header, to install all bolts loosely, then tighten evenly to ensure the flat installation of the flange. The torque sequence
from one flange to another will vary, but generally every bolt on a header should be first fit snug, starting from the inside
of the flange working out, alternating from top to bottom so that the bolt connects the flange to the manifold to the point

where they barely touch. Second, using the same inside-out pattern, tighten each bolt until nished. This method will

help prevent leakage and will give the user the best possible performance out of their pair of headers.

1. Place vehicle in a location where the floor is solid and flat, with adequate lighting. Do not attempt to work on a hot en­gine. Heat causes metal to expand and makes removal of fasteners difficult. Disconnect the battery cables from the battery.

Raise the front of the vehicle to obtain adequate access to the bottom exhaust manifold anges. Use large-base jack stands

to support the vehicle. Do not rely on the jack! Block the tires to prevent the vehicle from rolling off the jack stands.

2. Disconnect the spark plug wires by grasping and gently twisting the spark plug wire boots. Do not pull on the wires!

Brush or blow any debris, which may have collected around the manifolds or spark plugs. This will help prevent foreign
matter from entering the combustion chamber when the manifolds are removed. Remove the Negative Battery cable from
the battery.

3. Apply penetrating oil on all accessible fasteners and fittings before attempting to remove them.

4. Unbolt the Y-Pipe assembly from the collector anges of the factory headers.

5. Unbolt the dipstick tube bracket from the engine. Carefully slide the dipstick tube upward to remove.

6. Unbolt the Driver’s side exhaust manifold and remove. 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. Use
care not to get debris into ports or spark plug holes. Clean excess carbon deposits from the Y-Pipe mating ange.

7. Apply anti-seize to the header bolts if installing on aluminum heads. Bolt the Driver’s side header to the head using the
supplied header gasket, header bolts, and lock washers. Torque to 30 lbs./ft on iron heads, 16 lbs./ft on alum.