JBA 1528SJT 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

2007-2011 Jeep Wrangler 3.8

Part # 1528S

CARB EO # D57-28

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.

NOTE: Installation of this product requires an adequate workspace, general mechanic’s tools, general me-

chanical “know-how” and a reasonable degree of experience. Most auto enthusiasts with these resources will

have little difficulty installing these headers. However, you should carefully read these instructions before
attempting to install these headers. If in doubt, consult a professional mechanic. (Better to do it now than to
get stuck halfway through the installation.)

By installing your JBA Performance Exhaust product, you indicate that you have read this document and
agree with the following terms. The Purchaser is responsible for following all installation instructions and
safety guidelines supplied with JBA Performance Exhaust products.

PerTronix© assumes no responsibility for damages resulting from improper operation, misuse, abuse, or lack
of responsible care, or any problems resulting from incompatibility with other manufacturer’s products.

Included with your installation instructions is a copy of the product warranty. Please read it carefully before
you begin any work on your vehicle.

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, ac-

cidents that impact the configuration of the frame, and/or the installation of different engines or aftermarket
cylinder heads.

Customers breaking in new engines: Due to the extreme heat generated during the break-in process, the ap-

pearance 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 important when installing the header, to install all bolts loosely, then tighten evenly to
ensure the flat installation of the flange. It is normal for the flange to be raised off the cylinder head the thick­ness of the sealing bead.

To prevent leakage, it is important to tighten the flanges on any set of JBA headers carefully by using the
proper procedure. 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.