JBA 1650SJT User Manual

Corporate Ofce: PerTronix Inc. 440 E. Arrow Highway, San Dimas, California 91773 * Phone 909.599.5955 • FAX 909.599.6424
Installation Instructions
and Warranty Information
19641/2 to 73 260/289/302/5.0L EFI Ford Mustang/Mercury Cougar
Part # 1650S (will not t GT40P head)
Part # 1650S-2 (WILL t GT40P head)
Read all instructions carefully before attempting installation.
Rev. 3 4-13-13DSL
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 finished. This method will help prevent leakage and will give the user the best possible performance out of their pair of headers.
NOTE:
• 1964 1/2 -65 Cars must update motor mount to frame brackets to 1966 and later frame brackets in order for the motor to sit correctly
for these headers
•Lakewood bell housings will require clearancing for tubes
•Head ange will need clearance grinding when used with head studs or head bolts with hardened washers.
•It is recommended that a C5ZZ16A052E “Export Brace ”be installed, especially if the shock mounts center to center dimension is less that 33-3/4”
•We recommend using JBA PowerCables™ Ignition Wires part# 06209
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 at best. Disconnect the negative battery cable from the battery. Raise the front of the vehicle and remove the front tires to obtain adequate access to the bottom exhaust manifold flanges. 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. Spray WD-40 or some type of penetrating oil on all accessible fasteners and fittings before attempting to remove them.
3. Typically the exhaust pipes in these early Vehicles are long gone. These instructions assume the removal of all old components and the installation of a new exhaust system from JBA or by a competent exhaust shop. JBA manufactures a wide variety of H Pipes and exhaust systems to work with these headers. Contaact your JBA Dealer for more information.
4. On stick Shift cars, remove the Clutch equalizer bar “Z-bar ”and lower rod *Note there were several different Z-bars used on the
Mustang. See explanation on next page.
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