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Registered
Join Date: Jan 2007
Location: PARIS & BURGUNDY....FRANCE
Posts: 449
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Brakes upgrade......
I've got 996 TT big red calipers with adapters and 322 mm discs on my 930 SE and I'm still unhappy with the braking of the car......rear wheels are not enough braking and front are blocking on big braking......
So, is there a way to upgrade the master cylinder, or separate front/rear braking...?.... I've installed a manual "valve" with 4 position, but wich is only "stopping" +/- the brake fluid for the front.....but not sending more to the rear.... Does someone did something to improve that...? Thanks, Serge
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Serge, Gentleman Driver https://www.facebook.com/photo.php?fbid=10207116408000968&set=gm.1723624077 855805&type=3&theater |
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10-22-2007, 02:09 PM
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Registered
Join Date: Oct 2003
Location: Mount Pleasant, South Carolina
Posts: 14,330
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Do you have 996TT or 99TT Big Reds? The 993TT brakes have a 320 mm rotor IIRC. You can plumb in a manual brake bias valve to the front or rear brakes to adjust them. Also, check for kinked lines.
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10-22-2007, 05:01 PM
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Registered
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Pads can make a bigger difference than disks or calipers, what pads are you running.
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2014 Cayman S (track rat w/GT4 suspension) 1979 930 (475 rwhp at 0.95 bar) |
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10-22-2007, 05:01 PM
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Me like track days
Join Date: Sep 2003
Location: Kirkland, WA
Posts: 10,209
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Stock rear brakes?
I'd bet you have way too much front bias, ie the front piston area way exceeds the norm. You have the proportioning valve hooked to the FRONT brakes?!? These are for the rears only --
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- Craig 3.4L, SC heads, 964 cams, B&B headers, K27 HF ZC turbo, Ruf IC. WUR & RPM switch, IA fuel head, Zork, G50/50 5 speed. 438 RWHP / 413 RWTQ - "930 is the wild slut you sleep with who tries to kill you every time you "get it on" - Quote by Gabe Movie: 930 on the dyno |
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10-22-2007, 05:23 PM
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Registered
Join Date: Jan 2007
Location: PARIS & BURGUNDY....FRANCE
Posts: 449
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Quote:
FRONT  REAR  But, a lot of my friends told me that the 930's are often "blocking" on front wheels......
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Serge, Gentleman Driver https://www.facebook.com/photo.php?fbid=10207116408000968&set=gm.1723624077 855805&type=3&theater |
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10-23-2007, 03:26 PM
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Me like track days
Join Date: Sep 2003
Location: Kirkland, WA
Posts: 10,209
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You might try 944 Turbo fronts on the rears - you need way more rear bias.
Ask Bill Verburg -
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- Craig 3.4L, SC heads, 964 cams, B&B headers, K27 HF ZC turbo, Ruf IC. WUR & RPM switch, IA fuel head, Zork, G50/50 5 speed. 438 RWHP / 413 RWTQ - "930 is the wild slut you sleep with who tries to kill you every time you "get it on" - Quote by Gabe Movie: 930 on the dyno |
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10-23-2007, 04:23 PM
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A fellow Pelacanite
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You can get the 930 fronts on the rear with some swapping of parts.
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1981 UK 930. G50/01 shortened, 964 3.8RS Fibreglass Body Kit, 18" Alloys 8.5" F & 10" R, 225's F & 285's R, Special Colour Metallic Blue Paint, FIA Sparco Evo's, A/C and Air Pump removed, Electronic Boost Controller, GHL Headers, Tial46 WG. Fitting - New service kit. Needs Fitting - Innovate XD-16 Kit, Kokeln IC. Stephen's K27 HFS, EVO Intake Assy & his Modded USA Fuel Head. 1983 UK 911 3.2 Carrera Sport Coupe. Black, Black Leather with Red Piping, Black Alloy Gear Knob, K&N Air Filter Element, Turbo Tie rods. Needs Fitting - K&N CO Sensor, Round A/F Dial Gauge, Factory Short Shift Kit. http://www.danasoft.com/sig/Iamnotanumber.jpg |
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10-23-2007, 05:18 PM
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Registered
Join Date: Apr 2003
Location: Terre Haute, IN
Posts: 2,949
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Doesn't Instant G sell a kit to bolt front and rears on? I have all intentions to run 996TT on front and rear. I've already own them and discussed this with Dr. Timmons with positive reviews. Have you thought of running dual MC/s with balance shaft to help free up adjustments. I second the importance of pad choice. I understand your thought pattern, but I've never heard of anyone using the "restrictive" style proportioning valve on the fronts.
BOL
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Luke S. 72 RS spirit 2.7mfi, 73 3.2 Hotrod on steelies, 76 993 3.3efi TT, 86 trackrat, 91 C4s widebody,02 OLA winning 6GT2, 07 997TT, 72 914 v8,03 900 rwhp 996TT |
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10-23-2007, 05:37 PM
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1979 Porsche 930 3.4
