[DeTomaso] Clutch Master Cylinder and Shackle

Mon Jun 9 19:49:12 EDT 2008

The photo came from Goran's site. I sent it to Art when he was  doodling with 
his clutch.

SOBill  Taylor
sobill at aol.com  

In a message dated 6/9/2008 4:29:54 P.M. Pacific Daylight Time,  
Pantera007 at sbcglobal.net writes:

It  is just that I prefer to give credit where I can.  

So if anyone  recognizes "your" photo let me know!

I had two like this, and this was  the better one.  It was stashed in a misc
folder for a  while.

Chuck,
I think I may have sent that  picture along in the past,  but I think 
the picture originally came  from Goran?

Art

----- Original Message ----- 
From:  "ProvaMo.com" <Pantera007 at sbcglobal.net>
To: "'Art Stephens'"  <artstephens at charter.net>; <detomaso at realbig.com>
Sent: Monday,  June 09, 2008 4:15 PM
Subject: RE: [DeTomaso] Clutch Master Cylinder and  Shackle

> There is a photo of this access hole  at:
>
>  http://www.provamo.com/Members/TechInfo/ClutchMasterSlave.asp
>
>  Art, was this your photo?
>
>  Chuck
>
>
>
> -----Original Message-----
> From:  detomaso-bounces at realbig.com [mailto:detomaso-bounces at realbig.com] 
>  On
> Behalf Of Art Stephens
> Sent: Monday, June 09, 2008 3:48  PM
> To: detomaso at realbig.com
> Subject: Re: [DeTomaso] Clutch  Master Cylinder and Shackle
>
> Dan,
>      Using a hole saw to make an access hole in the passenger side of the
>  pedal box,  makes clutch master linkage work much easier.  I made  mine
> either 2 or 2.25 inches,  if I was to do it again,  I  would make it 2.5"
>
> Art
>
>
> ----- Original  Message ----- 
> From: "Daniel C Jones To: detomaso at realbig.com  List-Subscribe:"
>
<daniel.c.jones2 at gmail.comhttp://list.realbig.com/mailman/listinfo/detomaso>
>  ;
> "Sender: detomaso-bounces at realbig.com"
>  <mailto:detomaso-request at list.realbig.com?subject=subscribe>
>  Sent: Monday, June 09, 2008 9:18 AM
> Subject: [DeTomaso] Clutch Master  Cylinder and Shackle
>
>
>>I had finished setting timing  and installing the wide-band O2 last night
>>and
>> wanted  to take the Pantera for a drive to get some baseline air-fuel
>>  mixture
>> readings.  I'd made it to the interstate when the  clutch got very stiff 
>> at
>> the top of it's travel  (engaged, foot off the pedal).  I gave it a strong
>>  push
>> and suddenly I had no pedal.  I was maybe 20 miles from  home with a
>> bunch of lights and stop signs along the way.  30  years ago when I was
>> learning to drive, my dad had the foresight  to not only teach me how to
>> drive a manual transmission but also  how to shift without using clutch.
>> That came in handy last  night.  I managed to make it home only once 
>>  having
>> to start the car in gear at a light.  They've started  to install walk/no
>> walk
>> lights with timers that count  down to when the lights change which was
>> nice
>> for  timing the lights.
>>
>> When I got it home, I crawled under  the dash and found out what went
>> wrong.
>> The previous  owner had installed a CNC clutch master.  It had a fair bit
>>  of
>> free play before any resistance was felt and I found out  why.  It appears
>> the shackle was only threaded one or two  turns (threading it all the way
>> down would have taken up the free  play) and it stripped out.
>>
>> Several  questions:
>>
>> 1. Is the CNC clutch master metric or  SAE?  It appears the fitting on
>>    the hydraulic  line was replaced so I wonder if that was to convert
>>     from metric to SAE and a second 90 degree fitting added.  If  the
>> fitting
>>    on the CNC is SAE, then is  the stud also SAE?  Perhaps a thread
>>    mis-match  was why the shackle was only retained by a thread?  If  I
>>    re-flare the line to install an original clutch  master, what
>> fitting do I need
>>    and what  is the flare angle?
>>
>> 2. What is the thread size of the  shackle (would be the same as the
>>    stud on the back of  the original clutch master)?  I can thread a
>>     7x100 metric bolt several turns but the threads in the  shackle
>>    appear more coarse.  Perhaps the  previous owner ran an SAE tap
>>    through the  shackle?
>>
>> Getting the clevis back in looks like it's  going to be treat.
>> Does anything keep the stud from rotating on  the clutch master
>> (maybe just friction from the  piston)?
>>
>> Dan Jones
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