MSD 8211 Firewall Feed Thru, Red Installation - Manual

1. Choose a clear, flat location on the firewall, away from hot exhaust temperatures, for mounting the
Firewall Feed-Thru. Remember, the shorter the coil wire the less chance for spark loss.
2. At the center of the chosen location, make a 1 inch diameter
hole using either a hole-saw or a knock-out punch.
3. Place the Firewall Feed-Thru in the 1" hole and mark the
centers of the 4 mounting holes. You may also use Figure 1
as a template. Remove the Firewall Feed-Thru.
4. If the firewall is thick enough (1/4" or more), you can drill the
4 holes with a #29 drill bit and then tap them for 8-32 size
screws.
If the firewall is made of a thin piece of sheet metal or aluminum,
you will have to use screws with nuts on the back. In this case,
drill the 4 mounting holes with #15 drill bit and use #8 screws
with the proper nuts.
5. Install the Firewall Feed-Thru in the 1" hole using the mounting method that you selected. The
flange can go either side of the firewall as long as it seats against a flat surface. When you tighten
the screws, use Loctite and be careful not to crush the plastic. For a waterproof installation, squirt a
little silicon on the flange
before tightening the
screws.
6. Connect one coil wire
from the distributor to the
Firewall Feed-Thru and
another coil wire from
the Feed-Thru to the coil.
You must use 90 degree
spark plug style (HEI
style) boots and terminals
for connections on both
ends of the Firewall Feed-
Thru. See Figure 2.
MSD Firewall Feed-Thru
PN 8211
Parts Included In This Kit:
1-Firewall Feed-Thru
Figure 1
Figure 2
M S D
• W W W . M S D P E R F O R M A N C E . C O M • ( 9 1 5 ) 8 5 7 - 5 2 0 0 • F A X ( 9 1 5 ) 8 5 7 - 3 3 4 4