INSTALLATION INSTRUCTIONS
** Installation recommendation: JBA recommends in most case that the vehicle be taken to a reputable exhaust shop for installation.
40-2653
‘65-‘70 Mustang V8 with JBA H-pipe
Parts List:
A. P/S intermediate pipe 1
B. D/S intermediate pipe 1
C. JBA muffler 2
D. 90º bend 2
E. P/S tail pipe 1
F. D/S tail pipe 1
G. 2-1/2” Clamp 8
H. Universal Muffler hanger 2
I. Tailpipe hanger 2
J. Turnout
2
I
H
A
E
J
G
C
D
B
F
H
I
Start:
the outlet tube of the muffler.
9. On 2653 systems, follow
Typically the stock exhaust
Mark the floorboard at
washer
above instructions except
system on early cars is long
onto the S/T screw, slip the
position tailpipe tips through
gone. These instructions con-
screw through the hanger at
holes in rear valance. Align and
template the installation of a
whichever hole you marked, slip
adjust for depth. Secure with
new JBA Exhaust System after
another fender washer on the
clamp to hanger.
the original exhaust system has
screw, and attach the hanger to
been removed. This system is
the floor pan. Fasten the hanger
10. Very Important- Once the
designed to work with a JBA H-
to the muffler using a supplied
tailpipes are secured with the
Pipe built for your application.
clamp. Do both sides; be sure
rear clamp, the tails of the
to match muffler heights
clamp bolts must be trimmed
1. Remove and inventory the
off so they don’t hang up on the
JBA Exhaust System.
6. The rear tail pipe hangers
leaf spring.
bolt through the rear frame
2. Disconnect the negative
where the shipping tie-down
11. Check the clearance of
battery cable and allow the
brackets bolt on. If your car has
exhaust to floor and rear axle
exhaust system to completely
these brackets, they must be
along the complete system. Se-
cool.
removed. Assemble the grom-
curely tighten all clamps. Tack
met onto the strap hanger. Slip
weld all slip joints
3. With the H-Pipe installed,
a fender washer onto the 3 1/2”
and all exhaust removed from
bolt. Slip the bolt through the
the car, slip the intermediate
frame at the forward hole. Slip
NOTES:
pipes onto the H-pipe. Orient
1.) All exhaust systems expand
them so the small single bend is
the hanger/grommet assy. onto
about 1” rearward whent exhaust
temperature rises.
the bolt. Add another fender
flat, and pointing to the outside
washer and a lock nut and
of the car. The int. pipe should
tighten until grommet just starts
be just below the seat belt bolt.
to compress.
If you have replaced your fac-
tory bolts, it may be necessary
7. Slip the tailpipes over the
to shorten an aftermarket bolt.
axle. Install the small 90º
Allow at least a quarter inch
bends, long side into the muf-
clearance on the bolt.
fle . Drop the tail pipe onto the
90* bend. Align the tailpipe
4. Slip a muffler clamp on each
so that it fits into the notch in
exhaust pipe. Slip the muff ers
the floor pan, just inside of the
on to the Int. pipe. Align muf-
shock. Allow at least 1/2” clear-
flers to be flat with the floor,
ance on the floo .
maintain alignment with forward
To get more power out of your Mustang, JBA offers easy to install
bend of the intermediate pipe.
8. On 2654 systems, position
Long tube and Mid-length headers. For more information about these
The muffler should have a min -
the end of the tailpipe approxi-
and other quality performance products from JBA visit us online at
mum 1/2” clearance to the front
mately 3/4” below the valance
www.jbaheaders.com
floor hump, and a minimum
panel and approximately 1/2”
11/4” clearance on top.
forward from the edge. (Adjust
front to rear position at back of
5. Support the muffler temp -
muffle .) “Atta justed” to clear
rarily. Universal hangers are
the 2 1/2” pipe and clamp. Usu-
supplied with the kit, or you
ally a good smack with your
can adapt your factory dual
hand against the tailpipe into
hangers. If using the universal
the gas tank will gain the neces-
hangers, self-tapping screws
sary clearance.
and fender washers are sup-
plied. Position the hanger on
JBA recommends taking the vehicle to a muff er shop and having all slip connections tack welded. 10.16.06
(1 pages)
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