[DeTomaso] 485.8 RWHP & TRIPLE DISC CLUTCH????

[Kirby Schrader]

Paul,

Unless MD abuses it, my personal belief is the ZF will handle the HP  
and TQ he's at right now.

I have an ex-Pantera ZF in my GT40 (only change is a .653 5th) and I  
feel confident
that it will handle the 536HP/530ftlb that my engine dyno'd at. Time  
will tell, of course.

Gooey slicks and dropping the clutch off the line at 5000rpm, for  
example, would certainly
tax many transmissions, among other things.

The GT40s.com forum has discussed this issue ad nauseam and the camps  
are split.
Guys that run the ZF with no problems and the others who believe it's  
inevitable they will fail.

I beat the crap out of my Pantera over the years, both on the track  
and as a daily driver, and the
only thing I ever did to the ZF was ruin the 2nd gear synchro from  
power shifting to 2nd too many times.

FWIW,
Kirby



On 11 May, 2008, at 9:53 AM, P. Rimov wrote:

> Ok, so at what point does the ZF fail to handle MDs pretend 485.8  
> RWHP @
> 6,000R's and 459.3 RWTQ @5,500 R's.and explode in a hundred expensive
> pieces? Didn't the GT-40 program suffer a lot a transaxle failures  
> with the
> big block power and torque? I was looking through the Corral forum  
> archives
> last night and a lot of guys running big HP/TQ with power adders use  
> Mcleod
> clutches to handle the power. There were several mentions to avoid
> Centerforce dual friction set ups as they just don't handle the  
> power as
> well.
>
> Cheers
>
> Paul
> ----- Original Message -----
> From: "Ken Green" <kenn_green at yahoo.com>
> To: "Mad Dog Antenucci" <teampantera at yahoo.com>; <MikeLDrew at aol.com>;
> <johnmckee at cox.net>; <wkooiman at earthlink.net>; <detomaso at realbig.com>
> Sent: Saturday, May 10, 2008 8:57 PM
> Subject: Re: [DeTomaso] 485.8 RWHP & TRIPLE DISC CLUTCH????
>
>
>> I think McLeod makes two twin disk street clutches.  The original  
>> Street
>> Twin (about $1,200) which uses a specific flywheel, and the RST  
>> Street Twin
>> (about $800) which bolts to a stock flywheel.  I think someone said  
>> that
>> there might be a lot of adjustment required for the RST which would  
>> be a
>> pain for a Pantera.
>>
>> Ken
>>
>> Mad Dog Antenucci <teampantera at yahoo.com> wrote:
>> On the Engine Dyno Pulls:
>> Final adjustments at HMS Performance in Whittier made
>>
>> 485.8 RWHP @ 6,000 R's
>> 459.3 RWTQ @5,500 R's
>>
>> Yea, we have the dyno sheets. Definately there was and still is  
>> adequate
>> free play on adjustment before we ever got to the dyno shop. Dick  
>> and the
>> guys in the shop know what they are doing. It wasn't set it up too  
>> tight
>> and Drenske has set the Centerforce up the last 2 times.
>>
>> Definately its also the right Byers Precision Pro-Formance supplied
>> Pantera specific dual friction Centerforce assembly. Dick also set  
>> the new
>> assembly with the old side-by-side. Drenske could do these blind.  
>> And yea
>> same-same throw out bearing.
>>
>> Talking to EriK Belter and Dick Drenske and Harv the guys at HMS  
>> they're
>> ALL convinced that the Centerforce just can't cut it on serious  
>> power for
>> long. These guys as you know Mike are all pro's. I told them you  
>> said it
>> wasn't set up right and they said something about kicking your  
>> ass...I
>> think they were kidding! ;-]>
>>
>> In summary the feedback from JT, Erik and others is forget the  
>> Centerforce
>> and forget the triple disc clutch but definately go with a double  
>> disc
>> McCloud..
>>
>> Dawg
>>
>>
>>
>> MikeLDrew at aol.com wrote:
>> In a message dated 5/9/08 23 03 57, johnmckee at cox.net writes:
>>
>>
>> Were you using the Pantera specific Dual Friction Centerforce  
>> assembly?
>>
>>
>> And much more importantly, are you *sure* you had it adjusted  
>> correctly?
>> Even a little bit of pressure on the throwout bearing caused by an
>> improperly adjusted slave cylinder would cause the clutch to slip  
>> (and
>> drastically shorten the life of the throwout bearing). Before going  
>> any
>> further (and more importantly, before spending any more money),  
>> absolutely
>> ensure that there is adequate freeplay in the clutch mechanism.
>>
>> Although the Pantera Centerforce clutch is a 10.5 inch unit (the  
>> stock
>> clutch is 11 inches), I seriously doubt that it's incapable of
>> withstanding the torque that your motor is putting out. If it's not
>> misadjusted, could there be an oil leak (either from engine or  
>> gearbox) or
>> some other problem?
>>
>> Mike
>>
>>
>> **************
>> Wondering what's for Dinner Tonight? Get new twists on family  
>> favorites at
>> AOL Food.
>> (http://food.aol.com/dinner-tonight?NCID=aolfod00030000000001)
>>
>>
>> Mad Dawg Antenucci
>> Team Pantera Racing
>> The 1st & still the only vintage race team in open road racing
>> www.teampanteraracing.com
>> _______________________________________________
>>
>> Detomaso Forum Managed by POCA
>>
>> Archive Search Engine Now Available at http://www.realbig.com/detomaso/
>>
>> DeTomaso mailing list
>> DeTomaso at list.realbig.com
>> http://list.realbig.com/mailman/listinfo/detomaso
>>
>> _______________________________________________
>>
>> Detomaso Forum Managed by POCA
>>
>> Archive Search Engine Now Available at http://www.realbig.com/detomaso/
>>
>> DeTomaso mailing list
>> DeTomaso at list.realbig.com
>> http://list.realbig.com/mailman/listinfo/detomaso
>
> _______________________________________________
>
> Detomaso Forum Managed by POCA
>
> Archive Search Engine Now Available at http://www.realbig.com/ 
> detomaso/
>
> DeTomaso mailing list
> DeTomaso at list.realbig.com
> http://list.realbig.com/mailman/listinfo/detomaso