944Hybrids: 924/944/968 and 928 V8 Conversions
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HOW TO DO AN ADVANCED SEARCH.

Mon Jul 08, 2013 3:56 pm by Admin


For the benefit of 944Hybrids users there are two search functions available for you to use.
The purpose of this sticky is to explain the "Advanced Search" function because it is much more powerful and is the best choice when researching information.

When you log on to the site a list of options is shown in a line at the top of the page. One option is labelled "Search", use this option (NOT the search box lower down on the right).

After you click on the upper search option, a drop down box appears. At the bottom of this box is a radio button marked "Advanced …

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Hydraulic brake setups

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Hydraulic brake setups Empty Hydraulic brake setups

Post  whty8911 Wed Dec 25, 2013 4:23 pm

For those of you who track you car, what type of hydraulics are you using? Do they provide sufficient stop power? Any fade? Any failed setups that you have tried in the past?

I am trying to get my car finished for next season and currently have a manual brake setup from RH. As far as street driving the setup appears to be sufficient but am worried that it will not hold up at the track. Not so worried about the calipers/ rotors/ pads. More worried about master cylinder / bias issues? Also if the master cylinder will provide enough pressure for high speed stops with being accompanied by an assist.

whty8911

Posts : 33
Join date : 2013-07-14
Age : 35
Location : Chesterfield, VA

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Hydraulic brake setups Empty Re: Hydraulic brake setups

Post  whty8911 Wed Dec 25, 2013 4:24 pm

Just a little info on the setup. Its a 1987 porsche 944 turbo with rebuild factory calipers. New proportioning valve, new lines, rebuilt calipers, new performance rotors, hawk pads, etc. Master cylinder is from RH and came with the kit.

whty8911

Posts : 33
Join date : 2013-07-14
Age : 35
Location : Chesterfield, VA

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Hydraulic brake setups Empty Hydraulics

Post  simon123 Wed Dec 25, 2013 5:04 pm

I started with a tandem Willwood as specified in Sloan's book. Brakes were poor/heavy and needed quite a pedal push. I switched to a Mustang hydraboost/prop valve and now they are awesome. I have Boxster S Front rotors with LS 430 Calipers and 951 rear rotors and RX7 Calipers.
Not sure if the racer groups allow this

simon123

Posts : 125
Join date : 2013-07-26

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Hydraulic brake setups Empty Re: Hydraulic brake setups

Post  Lemming Wed Dec 25, 2013 5:33 pm

Check out a few threads in the brake section. I am happy with my DMC setup, but have had to upgrade my brakes and rotors for racing. I was using turbo s calipers on the front and turbo rears (with Hawk DTC 70/60's). Fronts are now 330mm cayenne rotors and wilwood 6r calipers. Rears are the same.
Lemming
Lemming

Posts : 855
Join date : 2011-05-30
Location : B'ham

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Post  whty8911 Wed Dec 25, 2013 8:31 pm

Lemming, who sells the dmc system you are using? I was thinking about a floor pedal assembly. Any experience with them?

whty8911

Posts : 33
Join date : 2013-07-14
Age : 35
Location : Chesterfield, VA

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Hydraulic brake setups Empty Re: Hydraulic brake setups

Post  Lemming Wed Dec 25, 2013 10:19 pm

whty8911 wrote:Lemming, who sells the dmc system you are using? I was thinking about a floor pedal assembly. Any experience with them?


Mine was made locally. The pedal systems are great, but the floor mount system will push you see back 3 inches. That put my head under the rollbar and I was not interested in being in that position. Measure carefully.
Lemming
Lemming

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Hydraulic brake setups Empty Re: Hydraulic brake setups

Post  whty8911 Wed Dec 25, 2013 11:28 pm

Right now my car is an empty shell and even for a big guy (6'1 240lbs) I sit close when I drive. So moving the seat back would not be an issue. I'm thinking a pedal system is my best option so far. Ideal pressure, stress removed from firewall, more room in engine bay, etc. I still have some time before that is a problem to address. Thanks for the input.

whty8911

Posts : 33
Join date : 2013-07-14
Age : 35
Location : Chesterfield, VA

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Hydraulic brake setups Empty Re: Hydraulic brake setups

Post  Lemming Thu Dec 26, 2013 6:47 am

Check out "Rich's LS powered 944 track car" thread in the member conversion area. Rich did a nice job of mounting a tilton floor pedal set.
Lemming
Lemming

Posts : 855
Join date : 2011-05-30
Location : B'ham

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Post  Rich L. Thu Dec 26, 2013 11:35 am

I made a floor plate from 3/8" aluminum and mounted a Tilton pedal box. Works great for me at 5'7", but I'm only 3 clicks forward on the seat rails from the back. Before the pedals I felt uncomfortably close to the dash and wheel.

https://944hybrids.forumotion.com/t1386p15-rich-s-ls-powered-944-track-car#17709

The mechanical balance bar works well for bias, brakes feel great. But the clutch is very heavy due to needing a 1" compact master to get clutch release.

Good luck with your build.

Rich
Rich L.
Rich L.

Posts : 900
Join date : 2011-05-30
Location : Seattle

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Hydraulic brake setups Empty Re: Hydraulic brake setups

Post  Lemming Thu Dec 26, 2013 7:12 pm

whty - make sure you check out the pics of Rich's vs. my rollbar. Mine is directly in line with the b-pillar and Rich's is behind. I'm 5'7" and the floor mounted system would not work for me.
Lemming
Lemming

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