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In order to fit the Turbo S calipers on your '85.5.. you will need to utilize the '86 Turbo spindles and get the adapter blocks to mount of the bigger Turbo S caliper.
A Turbo S spindle is not only very expensive, but will not fit your car right due to the offset differences.
Also speaking from some experience, i think the bigger Turbo S caliper is overkill for the 8v n/a cars. I have the regular turbo 4-pistons on my car and its more than adequete stopping power. The Turbo S calipers would only really benefit you if you do some very heavy track use and are in upper run groups.
It takes some getting used to the Turbo calipers on a non-ABS car like mine.. i had to relearn braking pressure because i was locking them up excessivley.. the Turbo S calipers will be even worse unless you run some very wide rubber on the front or have ABS (which your '85.5 probably dosent).
I was able to fade the single pistons by the last few runs at auto-x, that was properly bled, good pads and good fluid. Ive yet to be able to fade the turbo calipers.
Also remember, to run any of the 4-pistons, you need to run a minimum of a 16-inch wheel.
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Jon
1988 Granite Green 911 3.4L
2005 Arctic Silver 996 GT3
Past worth mentioning - 1987 924S, 1987 944, 1988 944T with 5.7L LS1
Last edited by Techno Duck; 11-03-2006 at 06:42 AM..
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