Problem Fixed....Re: New Clutch slipping under load...WAS: [DeTomaso] NPC - ClutchDisengagment

Tue Sep 5 22:59:43 EDT 2006

Art, David and everyone who wrote...

  Problem fixed....It was just too much torque for the new clutch!!!! Okay, seriously DICK  found the problem right away when he came by tonight....the clutch slave cyl "RELEASE LEVER locking "NUT"  had vibrated lose and backed off while I was driving the Pantera yesterday.

  THANKS again to all who wrote multiple emails.....we re-torqued every engine, suspension and chassis nut and bolt one more time....will put some more miles on the engine over the next week and a half before Silver State and check everything again but everything looks like a GO..

  Mad Dawg eating humble pie for dinner! ;-]> 

Art Stephens <artstephens at charter.net> wrote:
  Dennis,
Do you have any free play at the pedal or at the lever on the trans? 
If you have no free play, the clutch may not be fully engaged resulting in 
clutch slip as well as prematurely wearing out the throwout bearing.
Art

----- Original Message ----- 
From: "Mad Dog Antenucci" 
To: "Will Kooiman" ; "Paul Timko" 
; 
Cc: 
Sent: Tuesday, September 05, 2006 10:13 AM
Subject: New Clutch slipping under load...WAS: [DeTomaso] NPC - 
ClutchDisengagment

> Will, Motown, Curt, All,
>
> I have another problem now...I had the same problem as Motown had and 
> it turned out to be the "master cyl" after replacing the engine,flywheel 
> and clutch....After installing a new master and clutch slave and 
> readjusting linkgage last week the gears and linkgage is right on....BUT 
> when I took the car out on the road
>
> I noticed that the clutch now wants to slip 'under load' like its 
> partially engaged ....again the flywheel and clutch are new so I think its 
> an adjustment issue but just don';t know where to adjust. The clutch 
> engagement is set pretty short to the floor...perhaps too short?
>
> MD
>
> Will Kooiman wrote:
> I'm just guessing here, but the release fork needs to move about 2" when
> measured where the slave attaches to the release fork. I'm not sure where
> the 1/10" is measured, but I doubt that's enough.
>
> -----Original Message-----
> From: detomaso-bounces at realbig.com
> [mailto:detomaso-bounces at realbig.com]On Behalf Of Paul Timko
> Sent: Monday, September 04, 2006 9:55 PM
> To: MikeLDrew at aol.com
> Cc: detomaso at realbig.com
> Subject: Re: [DeTomaso] NPC - Clutch Disengagment
>
>
> He says the pedal is heavy and the motion is similar to when it was
> working, so I would believe that it isn't air in the system. While it
> is difficult to measure the amount of movement at the clutch disc, he
> believes it is approximately 1/10". I would suspect that this is enough.
>
> Thanks
> Paul
> #9270
>
> MikeLDrew at aol.com wrote:
>
>>In a message dated 9/4/06 19:25:16, thedrol at pobox.com writes:
>>
>><< He checked and he is getting movement at the slave cylinder. There is
>>
>>a big lever arm that runs into the bell housing and that is moving too. >>
>>
>>
>>
>>>>>But is it moving ENOUGH, that's the question. Although the parts are
>>>>>
>>>>>
>>different from the Pantera, the idea is the same--master cylinder actuates
> slave
>>cylinder, which moves a lever which released the throwout bearing. Just
> like a
>>Pantera, if you get a bunch of air in the system, clutch master cylinder
>>movement will compress the air and you will only get a little bit of
> movement (or,
>>more precisely, not enough movement) at the slave cylinder, and thus the
>>clutch won't disengage properly.
>>
>>Another possibility is that the clutch master (or slave) is shot and
> leaking
>>internally.
>>
>>It's also remotely possible that the clutch is sticking, but I wouldn't 
>>bet
>>on that one.
>>
>>Mike
>>
>>
>>
>>
>
>
>
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Mad Dawg Antenucci 
Team Pantera Racing 
  The 1st & still the only vintage race team in open road racing 
www.teampanteraracing.com