Description:
Billet Housing: Like the multiple spark, CD
ignition, MSD was the first to introduce a distributor housing machined
from billet aluminum. MSD uses state-of-the-art Computerized Numerical
Controlled (CNC) mills and lathes to create each housing. This procedure
produces a flawless, lightweight distributor housing that is accurate to
within 0.001''. The Billet and Pro-Billet offer the same performance
features with the only difference being the base of the distributor. The
Billet models feature a Dupont Rynite, glass reinforced base, while the
Pro-Billet models use a CNC-machined aluminum base.
Shaft and Ball Bearing Guide: The complete line of MSD
Distributors uses a polished steel shaft that receives a QPQ, or Tuftride
coating. This process produces a durable finish that reduces friction and
resists corrosion. To accurately guide this shaft, MSD uses a sealed ball
bearing located at the top of the housing. At the bottom of the housing,
an extra long sintered bushing controls the shaft. This combination keeps
the shaft spinning smooth and accurately throughout 10,000+ rpm.
Magnetic Pickup: All of the MSD Distributors (except crank
trigger models) use a high output magnetic pickup to trigger the ignition
system . This pickup is completely maintenance-free requiring no
adjustment ever. The pickup is mounted to the base of the distributor
housing and plugs directly into your MSD Ignition Control. A trigger
signal is created as a precision made reluctor (attached to the shaft)
passes by. The reluctor has a ''paddle'' for each cylinder and when the
paddle passes the pickup, a signal is created.
Adjustable Mechanical/Vacuum Advance: One of the most important
features of the MSD Distributors is the adjustable mechanical advance
assembly. The advance assembly allows you to accurately modify the advance
curve to match your specific application. To start with, the advance plate
is stamped and machined from chrome moly . Weight pins are then staked in
and tig welded in place. This assembly, along with the weights, then
receive a corrosion resistant QPQ coating. Nylon weight pads are installed
under the weights to ensure smooth movement as the weights are pushed out
from centrifugal force to advance the timing. The advance assembly is
mounted on top of every MSD Distributor making adjustments a breeze. A
variety of advance springs and stop bushings are supplied with each
distributor giving you the ability to set up to 24 different curves.
Installation: Most MSD Distributors must be used with an MSD
Blaster Ignition, 6, 7, 8 or 10 Series Ignition Control. Only the
Pro-Billet Ready-to-Run and Pro-Billet HEI Chevrolet models can be used
without an MSD Ignition.
