Brake upgrade question........

[Steve F]

Can anyone tell me what year and model brake system will bolt on to my 1967-912 with major modifications,please?Thank-you for your suggestions.

Steve

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1967 912 "in progress"

[Steve F]

Oops,I meant "without" major modifications.
Thanks again!

Steve

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1967 912 "in progress"

[dtw]

Just about any upgrade is going to require that you remove your struts with the 3" caliper bolt-hole spacing and replace them with 3.5" spacing struts.

Not MAJOR, but not so minor job either. Parts are cheap (~$100-150) from used parts houses. Requires that you do a bit of suspension work, and you'll need an alignment when you're done. You'll probably end up replacing ball joints and shocks too, ball joints are cheap and shocks vary depending on your needs. Then of course you have to decide what brakes you want; your options open up quite a bit then. Many go with SC or Carrera brakes.

-d

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Dave
1972 911T (E motor) RSR replica project
http://members.nbci.com/dtwinters/garage/

[Roland Kunz]

Hello

Simplest would be the 911T upgrade. Vented discs in front and maybe rear too ( Only S and Sportomatic ).

The complete "S" upgrade would be to expensive due the S calipers.

The adapterplate can be modified or made from a new thick sheet. Prefer tooling steel like C30.

Grüsse

[Roland Kunz]

Hello

UPS my mistake the 911 T came in 1968 and had the new struts.

You just need the 911 T on calipers and the ventet brake disc. I musst have to check the hubs but I think they are the same.

The T calipers are basically the 67on 912 calopers with spacers to widen them. Pre 67 have other pads 20008 later have 20011.

The old struts have bolt on adapters and the holes are fitting only for the "S" you need the S plate with wider pattern. Those plates are original forged.

Your splash shield will fit if you have a 66 with the retangular cutout then don´t cut them as those are NML. Get some later shields.

Not to forget the MBC and other brake stuff.

Grüsse

[Roland Kunz]

UPS, my mistake

[This message has been edited by Roland Kunz (edited 07-05-2001).]

[911pcars]

Roland,
The Euro 911s may have had a different setup than US models. The standard US 911T brakes in '68-'69 have solid rotors. Only the E and S models had vented rotors, plus they had the "S" aluminum calipers with the wider 3.5" bolt spacing. Later years had ventilated discs and the iron, "A" calipers with 3.5" mounting holes until '83. Beginning in '84, the Carreras used a slightly thicker (24mm) vented rotor with a 3mm spacer between the "A" caliper halves. Caliper spacers were not used prior to '84.

The only upgraded calipers I've heard of for the 3.0" mounting holes are the no-longer-made Bremtek 4-piston calipers which use the 69-83 vented rotor. You see them on the used market every once in a while. Steve, I think the logical first step is to locate a set of the proper struts. You might even wish to replace the entire front suspension as it's a bolt in.

Others on the list (e.g. Bill Verburg) may wish to verify or correct the above. Brake upgrades run the gamut. You can also perform a search on the forum for "brake upgrades" for a bunch of discussion and images on simple to exotic, affordable to "how thick is your wallet" projects.

Sherwood Lee
http://members.rennlist.org/911pcars

[Bill Verburg]

As Roland pointed out the best you can do without changing front struts to newer 3.5" ears is the M caliper off of various late 60's thru mid to late 70's 911, 911T, or 911E and a matching rear M caliper(you now have an even smaller L caliper). In the front this will give you the same 282x20mm vented rotors as used thru the 83 SC with a smaller lighter caliper(the M for 3" ears or A/S for 3.5"ears). In the back the M caliper and vented 290x20mm vented rotor as used thru 83 SC is a bolt on. Additionaly there are 2 mc choices almost all nonboosted 911's use the 19.05 mm Porsche # 901.355.012.02 i'm not sure what mc is on your 912 but my guess is ~17mm. in addition the early 69's used a 20.5mm Porsche # 901.355.012.04, ATE # 3.2120 - 3901.3 which is a nice upgrade(it will give a slightly higher firmer pedal than the 19.05) these 20.5mm mc 's are very difficult to acquire these days.
In addition I have heard of some sort of BMW caliper that can be used but I have no experience with it.

[ClayMcguill]

I've got a '66 912 that hs the same struts as your '67-upgrades for these are limited, as the previous posts show. Updating to the later struts with the wider bolt spacing is pretty much the way to go. Check out these sites for a little more brake upgrade info...

http://www.rennsportsystems.com/~porsche/1-sf.html

http://www.vehiclecraft.com/Brakes/vciweb4.htm

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Clay McGuill '66 912, '97 Jeep Cherokee www.geocities.com/the912guy

[This message has been edited by ClayMcguill (edited 07-06-2001).]

[Steve F]

Gentleman, Thank-you all very much for your input.Very informative!

Happy Motoring,Steve

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1967 912 "in progress"

[Roland Kunz]

Hello

AFIR in 66 came the S witch had the first ventet discs on a street car, Front and Rear. In 67 came the first T´s with the 912 axles and in 68 the T got the ventet front discs but with the M calipers. In 69 the sportomatic came and all sportos have ventet discs front and rear. In 69 also the new front axle came. The S calipers came with all S and al Boge Niveaumat. Pre 68 Cars had the 356 Caliper follow up.

So up to 69 there are some combos around but the caliper adapterplate is mountet to the strut on early cars.

One ting is that in 67 the front strut changed from the not adjusting to the adjusting shock tower. The split was i think the 67 to 68 MY.

Actually in germany most old cars got an ventet disc upgrade over the years.

The simplest thing is to upgrade into 69 on M calipers used up to the 77 2,7. ( 1200 kg 165 HP )

No need for big red or other 4 piston things.

Grüsse