[DeTomaso] Any interest in dual (no booster) brake MC conversion?

Charles Engles cengles at cox.net
Wed Mar 28 22:46:15 EDT 2012


Dear Ken and Mike,


          I have long had interest in this mod, but I have been concerned
about exactly the problems that Mike describes.  In my informal survey and
questions of people who done the mod, the response ranges from "it works
great" to "it works OK".   I remain interested, but skeptical about how easy
it is to do and maintain excellent brake function from pedal effort to
stopping distance.   I hope that you have made a breakthrough.


                       Warmest regards,  Chuck Engles


-----Original Message-----
From: detomaso-bounces at realbig.com [mailto:detomaso-bounces at realbig.com] On
Behalf Of MikeLDrew at aol.com
Sent: Wednesday, March 28, 2012 9:37 PM
To: kenn_green at yahoo.com; detomaso at realbig.com
Subject: Re: [DeTomaso] Any interest in dual (no booster) brake MC
conversion?


In a message dated 3/28/12 19 18 38, kenn_green at yahoo.com writes:


> I can email photos to anyone interested.  It really cleans up the 
> front trunk.  Maybe not a good idea with stock calipers, but if you 
> have big brakes, seem like the way to go.
>  
> 

FWIW, Geoff Peters has been struggling to make his GT5 stop after he ditched
the brake booster to save weight (!?)

He's got six-piston Wilwoods on the front and four-piston in the rear.   He 
has gone through numerous different sized master cylinders in an attempt to 
get the car to stop properly, to no avail.   It still requires an enormous 
amount of pedal effort.   I drove the car from England to Modena and back, 
and it wasn't nearly as pleasant as it might have been otherwise.

The fundamental problem is that the pedal doesn't have enough mechanical 
advantage.   Normally when cars are available either with, or without power 
brakes, they have a different brake pedal depending on the application; the
one without power has a much higher leverage ratio.

What is your reasoning behind getting rid of the power assist?

Mike
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