Installation With Cable
For 289, 302 and 351W Engines
LOTS OF PICTURES, it may take a while to load...
|Also, visit the FAQ Page for more info on
5-Speed transmission installations.
|This page describes the conversion of a steel scattershield from original type linkage to cable clutch
|alignment studs here
|Thanks to Tom McWillie for the use of his scattershield, flywheel, clutch and T-5 transmission.
|The finished product, ready for installation into the car.
I need to check with the machine shop, though - I think they bored my block just a little too far...
The scattershield, originally designed for a toploader
4-speed, was first modified with an adapter plate for
the installation of a 5-speed T-5 transmission
Another view showing the scattershield and it's block
plate, flywheel, and clutch bolted to the rear of a 289
First real modification was to install the ball stud inside on the passenger side of the bellhousing. The new fork for the
cable clutch pivots from the stud as it is pulled forward by the cable. Alignment was straightforward. Just assemble the
scattershield onto the transmission, without the engine, and install the throwout bearing onto the clutch release fork. The
ballstud is screwed into a 1/2" nut and is clipped to the retainer spring on the release arm. Once everything is aligned (the
transmission aligns the throwout bearing) weld the 1/2" nut to the scattershield.
This is where the trial and error begins... You must install the clutch, scattershield and transmission onto the block to
determine the correct height for the ballstud. It should be adjusted so that there is a small amount of clearance between
the throwout bearing and the pressure plate when the release arm is at it's rearmost travel. This took three times,
removing the scattershield each time, to get it right.
This view shows the new 87-93 Mustang clutch
release fork mocked up on the new ballstud
positioned inside the scattershield.
|This shows that the larger size of the scattershield
makes for a tight fit. The release arm is actually
about 1/2" too short to be able to install the
|The red X's show the part that was added
|Another view showing the initial mock-up
This view shows the throwout bearing in position
during the initial mock-up
Additional bracing was added to the back side of the
release arm. The arm sees a lot of stress when
actuating the clutch, so it needs to be very strong.
1/4" thick steel overlapped each end of the sectioned
area of the arm and was welded securely in place.
Check for clearance between the extended arm and
any possible obstructions inside the scattershield.
Maximum rearward travel of the arm is a necessity.
It was decided that the release arm's geometry would be
better in relation to the cable if it was extended about 1/2".
This is the front side of the release arm AFTER it was
extended. The metal is too hard for a hacksaw, so a cutoff
wheel was used. Bracing was added to the rear of the arm
to bridge the resulting 1/2" gap. The angle of the outer
end was pushed slightly rearward to allow maximum travel
of the arm as the cable actuates it
Shows the 87-93 Mustang adjustable cable installed.
All that remains is to build a custom cover for the
cable and clutch release arm to keep dirt out.
Here is the final installation. A 5/8" hole was drilled in
the scattershield's flange to provide a stop for the clutch
cable housing. That position, with the extended release
arm, provided perfect alignment for the cable to actuate
the release arm.
This same type modification can be done if it is desired to install a cable clutch system on an original
Toploader or T-10 Mustang transmission. The only difference would be that no T-5 adapter plate would be
installed on the scattershield.
|Click HERE to view MustangSteve's Retrofit Quadrant cable clutch conversion parts for Mustang pedals.