Which 911 brakes are direct bolt-on?

[ViR2]

I'm thinking of swaping my brakes to better ones from other 911, because currently I'm missing one caliper so I may use it to upgrade...

Which brakes I could use without any additional modifications?

[Jaems]

In 67 they went to a vented rotor and the calipers were widen to work. Should be if you have all the parts a direct bolt on. In 69 they change the some of the front suspension and to use this caliper you will need to change some of the parts. Again if you have all the parts a direct bolt in. However, you will need to reline the front end. The 73 aluminum S Brake is the best and if you get all the related parts a direct bolt in, however very expensive.

Other than the S brakes, the brakes for any given year are the same for a 912 as for a 911.

[ViR2]

what about 930 turbo brakes? What should be changed additionally?

[Jaems]

Just put a SC suspension under the front and then they should bolt on. Unless you are going racing that will be more brake than you will need.

By the way 65 912's are rare. They were never shipped over here from the factory. The ones that are here were brought over by individuals. Most of the ones that were for the European market are gone now. The factory was still pushing the 65 356 SC. Officially, the 66 912 was the first imported 912 from the factory.

You will never get the money back you are putting in this one to make it like a 911. It was worth more as an original unmolested 65 912. Also the short wheel based of the 912 will be very tail happy with the extra heavy 911 engine. In 67 they put weights in the front to help counterbalance this problem. That is why they went to a longer wheel base in 69.

Just remember that if you get into a corner a little too hot. Leave you foot down on the gas and hope that car will hold. Otherwise, if you lift and try to brake. You may find yourself, on a off road experience, leaving the road backwards. SWB 911's were famous for this activity with inexperience drivers.

[ViR2]

I would keep it stock, though I already bought it modified, so I'm going to make it 911, because there 's no way back with it eitherway

What is SC? Which year is that?

[Jaems]

78-83

[ViR2]

never mind, I've found stock calipers

[atomman]

hello

I have a 65 912 and rebuilt the front calipers on the weekend and when i bolted them back on i managed to strip the thread on one of the banjo's

was planning on just tap'in it out for a m12 banjo but was also wondering what later parts are bolt on ?

reading above "if im treading right" that if i find some later M calipers and put vented disc's on that they will fit on my early front end ? and just bolt on ?

cheers

Gary

[djdsc]

The wide "M" calipers with the spacer used from about '69-'77 911's have 3" spacing on the mounting holes and are a direct bolt up for use with vented rotors. You will most likely need to replace the wheel lugs with longer ones too!

Having said that there is no difference in the brake pad area or the caliper piston diameter, you are only gaining what ever benefit there is of having the vented rotor for cooling.

Do the math:

2- rebuilt "M" calipers (that will most likely need a core charge) or a pair of cores that then need to be rebuilt plus the cost of 2 rebuild kits.

2-vented rotors

2-wheel seal kits

10- longer wheel studs

Your time and labor

= no notable difference in normal braking

vs. one stock caliper core used

[fbarrett]

Vir2:

Turbo brakes would be huge overkill. Years ago I put a set of early 911 front brakes on my '65 912, and after hundreds of autocrosses and track events--most of them at high altitude, where the brakes get a real workout due to thin air--everything's cool, and I'm still happy with them. Find front brakes from a '67-73 911, and you'll be happy. No need to do anything about the stock rears.

Frank