[DeTomaso] Ring bolts (again) and flywheel bolts

[Charles Engles]

Dear Steve,


              My last engine build used the Fidanza flywheel and I have forgotten which clutch, but I think it is a McLeod.   I was also advised about the little fitment problem with bolts.   I had the machine shop machine the bolt holes for the bolt that I used to insure optimal fitment.   So far, six years and over 8,000 miles, all is well, except the gas tank is leaking...sigh.  It is always something.

                               Warmest regards,  Chuck Engles




-----Original Message-----
From: DeTomaso [mailto:detomaso-bounces at poca.com] On Behalf Of shawkins777 at comcast.net
Sent: Saturday, April 12, 2014 2:30 PM
To: Kooiman, Will
Cc: detomaso at poca.com
Subject: Re: [DeTomaso] Ring bolts (again)



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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