Era Replica Automobiles 427 ROADSTER, Assembly And Service Manual

Page: 145 / 165

SECTION H -FINAL OPERATIONS -
145
INSTALL WIPER ARMS
Without the arms installed, cycle the motor through high
and low speed. When you turn off the switch, check to see
that the drive posts return to the far right (passenger’s side)
position.
Press the arm onto the post so that the blade falls at the base
of the windshield, just above the frame. See above.
Check the sweep of the wiper and adjust if necessary.
Removal:
Use a screwdriver to pry between the post base and the
edge of the arm, opposite to the blade.
SUSPENSION ADJUSTMENTS
CHASSIS HEIGHT
After setting the springs as described on page 54, the car
should be driven to settle everything in. Don't change the
spring heights before driving the car at least 50 miles.
COIL-OVER
ADJUSTMENT
Front : When you raise both
sides of the coil spring collar
by X (thereby compressing the
spring more), the chassis
height will change by roughly
1.4 x X. In other words, to
raise the ride height by 1”,
move the spring collar up by
about 0.7”.
Rear (with Jag) : For small
changes, you can adjust only
one spring per side. The ride
height will change roughly ½
the collar change. For larger
changes, change all four of the
collar positions equally. The
ride height will then change
roughly equal to the collar
height change.
FRONT
The specifications for the standard front spring preload are
on page 54. This will result in about 7-
1 /
2
" from the ground
to the bottom of the front crossmember (5 1 /
4
" to the front of
the main rails). The specifications shown below are
predicated on the standard tire sizes: 235-60 and 295-50-
15. You may change the front height to suit personal taste
but be aware that the
oil cooler scoop will be the first to
contact pavement if the car is too low.
Once the height is correct, tighten the front upper control
arm pivot bolts. See page 97.
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REAR
If you have adjustable spring collar shocks, the rear height
can be adjusted to taste. E.R.A. recommends that the main
chassis rails be raked about
1 /
4
" to 1 /
2
" from front to back.