[DeTomaso] Ring bolts (again)

Thomas Tornblom thomas at hax.se
Sun Apr 13 02:50:24 EDT 2014


Thanks,

Steve told me he uses a DF7000000.

So there are no interference issues using that clutch in a Pantera? I 
wonder why they have the Pantera specific clutch then?

I may go with that then. I've been very happy with the Centerforce 
clutch, together with the long throw slave cylinder, and I suspect that 
the stock or a McLeod clutch may be stiff with the LT cylinder.

Thomas


Will Kooiman skrev 2014-04-13 04:01:
> The Centerforce clutch that Steve and I use match perfectly to the
> Fidanza flywheel.  I have the PN somewhere.  It is not a Pantera
> specific clutch.
>
> As Steve said, the flywheel is not drilled for shoulder bolts, though.
>   If you use normal flywheel bolts, the shoulder bottoms out.  It is
> close, but not quite.
>
> The first time I put everything together, I used 2 washers, and that
> worked fine.  The last time I had everything apart, I was thinking about
> cutting some of the threads to allow the use of shoulder bolts, but I
> didn’t feel comfortable doing that.  Instead, I used solid Rockmount
> inserts.
> --
> Will
>
> From: thomas <thomas at hax.se <mailto:thomas at hax.se>>
> Date: Saturday, April 12, 2014 6:28 PM
> To: "shawkins777 at comcast.net <mailto:shawkins777 at comcast.net>"
> <shawkins777 at comcast.net <mailto:shawkins777 at comcast.net>>
> Cc: Will Kooiman <will.kooiman at gmail.com
> <mailto:will.kooiman at gmail.com>>, "detomaso at poca.com
> <mailto:detomaso at poca.com>" <detomaso at poca.com <mailto:detomaso at poca.com>>
> Subject: Re: [DeTomaso] Ring bolts (again)
>
> Then you are not using the Pantera specific Centerforce clutch, which is
> smaller than a stock 351C clutch and uses different mounting holes. The
> clutch may have the same dimensions as a 5.0 Mustang clutch.
>
> 12 apr 2014 kl. 21:29 skrev shawkins777 at comcast.net
> <mailto:shawkins777 at comcast.net>:
>
>> I have a Centerforce clutch and a Fidanza flywheel and the clutch
>> bolted up to the flywheel with the existing bolt holes, no new holes
>> were needed.  What you do have to pay attention to is the shoulder on
>> the Ford bolts are too long and will bottom out before the clutch
>> tightens against the flywheel.  I think Will Kooiman said that GM
>> bolts will work.
>>
>> Steve
>>
>> ------------------------------------------------------------------------
>>
>> *From: *MikeLDrew at aol.com <mailto:MikeLDrew at aol.com>
>> *To: *thomas at hax.se <mailto:thomas at hax.se>, detomaso at poca.com
>> <mailto:detomaso at poca.com>
>> *Sent: *Saturday, April 12, 2014 12:11:36 PM
>> *Subject: *Re: [DeTomaso] Ring bolts (again)
>>
>>
>> In a message dated 4/12/14 9 31 11, thomas at hax.se
>> <mailto:thomas at hax.se> writes:
>>
>>
>> > I'm getting ready to pull the ZF to see if it is the flywheel, or clutch
>> > that is causing the fairly violent vibrations I've had sine the latest
>> > engine rebuild, where I replaced the stuck flywheel and clutch with a
>> > Fidanza aluminum flywheel and Pantera specific Centerforce clutch.
>> >
>> >>>Ah.   Ooh.   Er....
>>
>> The Centerforce clutch uses a non-Ford bolt pattern, so you would have
>> had
>> to have a machine shop redrill the holes in the flywheel to accomodate
>> the
>> clutch.   It's very easy to get that job wrong; when that happens the car
>> will shake like a wet dog and there's nothing you can do about it.
>>
>> For that reason alone I am very much opposed to Centerforce clutches.
>>
>> Chances are you could fix it by buing a very expensive Centerforce
>> flywheel, or alternately, a slightly less expensive McLeod clutch that
>> would bolt
>> right up to the original holes on the flywheel.
>>
>> The Fidanza flywheel uses a removable balance weight so that you can have
>> either 28.8 or 50.0 oz of imbalance, making it suitable for either
>> style of
>> Ford engine.   If you got that wrong, that could be the problem too.
>> >
>> > >The first time I had it out I drilled the old ring bolts and safety
>> > wired it, but I have decided to get new ARP bolts and redo it.
>> >
>> >>>Why?   If it ain't broke don't fix it! :>)
>> >
>> > >So where to get the bolts and pan gasket?
>> >
>> >>>ARP sells ZF ring gear bolts but does so under exclusive contract with
>> Lloyd Butfoy.   They will not sell them via any other channels.
>> >
>> > >Someone mentioned ARP bolts for some Euro box (Rover?) that were of the
>> > correct size? Might be easier to get them around here.
>> >
>> > >>>As far as I know, the ones ARP makes for the ZF are completely unique.
>>
>> > >By the way, I have now had help from a guy in the US to tune the EFI and
>> > it is like a new car :) In case anyone needs assistance tuning a stock
>> > Ford EFI I can recommendhttp://www.efidynotuning.com
>> >
>> >>>Sounds great!
>>
>> Now, if you can only fix that shaking problem....
>>
>> Mike
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-- 
Real life:   Thomas Törnblom             Email:    thomas at hax.se
Snail mail:  Banvallsvägen 14            Phone:    +46 18 32 31 18
              S - 754 40 Uppsala, Sweden  Cellular: +46 76 209 8320




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