PerTronix JBA Exhaust 6651sinst - Manual (Page 3)

3. Typically the exhaust pipes in these early Vehicles are corroded to the extent that they
are difficult to modify for use with headers. These instructions contemplate the removal
of old components and the installation of a new exhaust system by an exhaust shop.
These instructions cover only the installation of the headers. The necessary exhaust
system modifications should be left to an exhaust shop.
4. Unbolt the Driver’s side exhaust manifold and remove. Using a small wire brush or
similar instrument, clean any carbon deposits left on the head.
5. If installing headers on aluminum cylinder heads, apply anti-seize to the header bolts.
(Small head 3/8” x 1” bolts & lock-washers included.). Bolt the header to the head.
Torque to factory specifications. Don’t forget the lock washers.
6. Unbolt the passenger side manifold and remove. As with the Driver side, apply anti-seize
and bolt the header to the engine.
7. Reinstall the spark plug wires and looms taking care not to let any wires rest against the
header tubes. Reinstall the battery cable. Make sure all rubber hoses and wires are kept
away from the headers. Otherwise, the heat will damage these components.
8. After the exhaust modification have been made to adapt the headers to your exhaust
system, recheck everything! Make sure all bolts are tight.
9. Start the engine and let it warm up. Check for leaks. Shut engine off and let it cool
down. Check to make sure all fasteners are tight.
10. Periodically check and retighten the header bolts.
Parts List:
(1) Driver’s Side Header Assembly
(1) Passenger’s Side Header Assembly
(16) 3/8” x 1” header bolts & lock washers
(2) Header gaskets (Header to Head flange)
Other recommend JBA products:
For best performance and authentic Mustang “DNA” sound JBA offers performance
exhaust system in a variety of configurations. Complete your Mustang’s exhaust with
matched exhaust components from JBA. For more information about these products visit
www.jbaheaders.com or call 800.830.3377.
Part No. Description
50-2650 65-70 Mustang, dual rear exit, aluminized with turn down tips (shown)
50-2652 65-70 Mustang, R-model style dual side exit, aluminized (shown)
50-2653 65-70 Mustang, dual rear exit through valance, aluminized, 3”trumpet tips
P/N 50-2650 P/N 50-2652