What kind of calipers are these? Options

[tornik550]

These are from a 911 however I do not know the year. I think it was somewhere in the 80's. What kind of caliper are they. If I am going to use them (I have a 911 suspension) what rotors do I buy?

[colingreene]

Could you take the spacer out and run the more narrow rotors though?

[Eric_Shea]

Could you take the spacer out and run the more narrow rotors though?

Yes, this is a common question probably because of the "Bird in Hand" theory.

You can take the spacers out entirely and run a solid rotor but, you'll need shorter fasteners as the stock M9 (no longer available in any head style) fasteners will bottom out. I'm sure putting a solid rotor on is not the desired goal here regardless, especially with that size pad. You can warp a solid rotor fairly easily with too much friction and, you'll end up with fade.

The fact is, it never really works out for you unless you can find that one individual that has a set of 7mm SC spacers and fasteners with no calipers to go along with them. Let's see why "bird in hand" doesn't really play out with caliper spacers:

All you need are spacers and fasteners right?:

Who has just those items? - Basically, nobody. I'm sure "someone" does but, they usually have calipers to go along with them. Bird in hand now becomes needle in haystack.

Where do they come from? - The spacers and fasteners you need have to come "out" of a pair of core calipers. Best to just buy the set of core calipers and sell the current set of cores you don't need. $0 exchange.

I could shave these down to 7mm. - You could. Not that this would matter much to anyone but, you'd ruin a set of Carrera spacers that someone who needs a Carrera caliper could use. Then you'd have machining costs (unless you have a mill) and extra long fasteners that will come close to bottoming out before they torque up to spec. M7 and M9 stuff is basically non-existent. Colin at Superformance in the UK has some but they're around $7 (x8 plus shipping from the UK).

When you get down to the meat and potatoes, you've gotta use your noddle or you could lose your bread. (IMG:style_emoticons/default/wink.gif)