SC brake calipers

[Boydskyking]

I have a 1969 912 that I am constructing a 911 RS. I am replacing the complete fron suspinspion with one from a 1974 911 S. They have the 3.5 bolt spacing.I have everything but the brake calipers.In the interest of saving money(the S calipers are expensive) would the SC calipers work on these struts and would they be as good. The car will not be raced just street

[Flieger]

You need A calipers to fit 3.5 inch spacing. I think those started on the Carreras, but maybe the SCs had them as well. You don't want M calipers.

[ShakinJoe]

I have a set from an 87 Carrera that gave 3.5 spacing. I have all four. PM me if interested.

Not all Carreras had 3.5 spacing, many of the Boge struts came at 3"

[Flieger]

He'll need to have the Carrera proportioning valve if he uses the rears.

[ShakinJoe]

Got that too!

[djdsc]

As I recall the only difference in the front SC and the Carerra's are a wider spacer. The pistons are the same but you can use the thicker rotors.

[Bill Verburg]

Originally Posted by Boydskyking

I have a 1969 912 that I am constructing a 911 RS. I am replacing the complete fron suspinspion with one from a 1974 911 S. They have the 3.5 bolt spacing.I have everything but the brake calipers.In the interest of saving money(the S calipers are expensive) would the SC calipers work on these struts and would they be as good. The car will not be raced just street

Yes, the aluminum S and iron A calipers have the same 3.5" mounts, As were used from '76 Carrera til '83SC, then from '84 the wider version of the A was used.

If you are using the '69-83 20mm front rotor you use the S or A front caliper. If you want you can also use the '84-89 wide A caliper but you also need to use the 24mm '84 -89 front rotors w/ them.

Do not use the '84-89 Carrera rears, these have pistons that are too big for most users to comfortably employ.