The Very First S-Caliper?, an interesting look at one of DaveP's calipers Options

[Eric_Shea]

Thanks Murray,

(without a proporting valve in the mix as on stock 914)

Show me a proportioning valve on a stock 914 and I'll show you an emergency pressure regulator (it proportions nothing). (IMG:style_emoticons/default/biggrin.gif)

356C - 58:42
F 48mm
R 35mm

911 Regular through 68 - 58:42
F 48mm (M-Caliper)
R 35mm (L-Caliper)

911S, RS, 914-6 and Regular 911 through 83 - 56:44
F 48mm (M-Caliper, S-Caliper, A-Caliper)
R 38mm (Rear M-Caliper, 914-6 and GT Caliper and Wide L-Caliper)

914 - 56:44
F 42mm
R 33mm

Seems like they settled on the 56:44 ratio as the cars became more balanced. (IMG:style_emoticons/default/wink.gif)

I haven't delved into the other caliper ratios. Sorry. I believe there's a nice spreadsheet on Pelican that goes fairly deep.

[Eric_Shea]

Now on video. John and Dave, your calipers are stars! (IMG:style_emoticons/default/biggrin.gif)

[McMark]

Beautiful. You pronounce Versuch incorrectly, but you got the caliper right! (IMG:style_emoticons/default/cool.gif)


(IMG:style_emoticons/default/poke.gif)

[Eric_Shea]

What do you expect from a stupid American...? Fer-ZOOK it is. (IMG:style_emoticons/default/sad.gif)

[Eric_Shea]

Fixed.

[McMark]

Well now it's friggin' perfect. (IMG:style_emoticons/default/cool.gif) And the calipers are still (IMG:style_emoticons/default/drooley.gif) (IMG:style_emoticons/default/wub.gif)

Big (IMG:style_emoticons/default/thumb3d.gif) for undertaking this...

[Eric_Shea]

Danke Mark,

The credit goes to Dave Pateman who sent me his very valuable and very early 908 caliper. Without batting an eye and, without EVER asking when it would come back. It's a good feeling to have a project like this come to fruition. It will be a better feeling to get that caliper in a box on it's way back to Dave.

[ME733]

..........ERIC....add to the mix of wheel sizes, and possable caliper clearance (shaving) of O.E.M. brake installations.....The early 911,s 1965-thru at least 1967.....had as an option OR furnished on the car....J-14 X 5.5 inch FUCHs forged wheels....AND as another piece of history......."back in the Day" around 1977, when VINTAGE racing had just started, there were many older guys that showed up (in the paddock, pits) who actually owned or drove some of the famous racecars of the 1950,s and 1960,s...WELL my point is, EVERY guy I ever talked too who drove a 550 spyder/or derivitive.....said that those cars were a" handful , twichy and " treacherous " to drive near the limit, and under braking.....now bearing in mind those cars had drum brakes, larger and highly refined drum brakes.....POINT IS... those cars did not have a "Emergency pressure regulator" to provide braking stability....and of course as compaired to the 914 , they had a shorter wheelbase and smaller track.(and approximately 700 pounds less weight).....So once again we can see PORSCHE utilized racing feedback,to refine....In our case....the 914...the GRANDSON of the 550/718 et al, series of mid engine racecars.........murray.

[Eric_Shea]

Thanks Murray, Here's some video's I did last summer with those 14's (I'm saving a set for my trailer!) (IMG:style_emoticons/default/biggrin.gif) Not a problem fitting over stock S-Calipers of either variety. (IMG:style_emoticons/default/wink.gif)