[DeTomaso] Ring bolts (again)

Sun Apr 13 08:26:34 EDT 2014

There are only 2 issues.

1.  The issue we mentioned about the bolt holes.  It is threaded 100%,
which doesn¹t work with shoulder bolts.
2.  It contacts the plastic insert that plugs the inspection hole.  If you
want to run the insert, you could probably trim it to fit.  I just left
mine off.

I think it even fits the stock flywheel.  It has more than one pattern.

Mine slipped the first few miles, but once it was "worn in" it was fine.
--
Will

On 4/13/14 2:50 AM, "Thomas Tornblom" <thomas at hax.se> wrote:

>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
>> didn¹t 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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>> !DSPAM:5349f0192731685765980!
>
>
>-- 
>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