[DeTomaso] Ring bolts (again)
shawkins777 at comcast.net
shawkins777 at comcast.net
Sat Apr 12 15:29:57 EDT 2014
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
----- Original Message -----
From: MikeLDrew at aol.com
To: thomas at hax.se, 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 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 recommend http://www.efidynotuning.com
>
>>>Sounds great!
Now, if you can only fix that shaking problem....
Mike
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-------------- next part --------------
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
To: thomas at hax.se, 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 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 recommend http://www.efidynotuning.com
>
>>>Sounds great!
Now, if you can only fix that shaking problem....
Mike
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