[DeTomaso] Distrubutor Gear Chewed Up

[Asa Jay Laughton]

Okay, so bolt it on with the fuel pump eccentric in place and see if 
that makes a difference.  If so, then just run with the eccentric in 
place.  It's light enough and as long as you aren't running a fuel pump 
off it, there won't be any load.

Asa Jay

Thomas Tornblom wrote:

> Daniel C Jones wrote:
> 
>> Thomas,
>>
>> I've not seen that problem but I've not seen my cam, either.  I had it
>> directly sent to Dave Williams.  Dave, let us know what you find when
>> you assemble the engine.
> 
> 
> Crane is investigating the problem, including chasing up the blue prints.
> 
> They said they see three potential causes:
> 
> 1) The blueprints for the core are wrong
> 2) The vendor making the cores did a mistake
> 3) The guy at crane finishing my cam did a mistake
> 
> The tech guy at Crane checked around the tech department, and they had 
> had no such problems from other customers, or so they say.
> 
> My problem may be aggravated by the fact that I'm not installing the 
> fuel pump eccentric. Using the stock Ford bolt and washer, plus the 
> eccentric would potentially avoid the problem, or at least hide it.
> 
> I can imagine it will be a hit or miss with the combination of bolt and 
> washer, timing gear brand, using the fuel pump eccentric or not.
> 
> I am contemplating drilling the threads about 1/2" deeper into the core, 
> with the cam still in the block. I would prefer not having to remove the 
> timing gear again as it is new and is really tight.
> 
> Anyone know how hard these cores are? Would a plain drill bit in a power 
> drill work?
> 
> Anyway, Crane said they would get back to me today.
> 
>>
>> Dan Jones
>>
> 
> Cheers,
> Thomas
> 
>>
>> On 6/1/06, Thomas Tornblom <Thomas.Tornblom at hax.se> wrote:
>>
>>> Speaking of steel roller cams, I just ran into an unforeseen problem
>>> today with my new Crane hydraulic roller cam. The threads for the cam
>>> gear bolt starts way too early, which makes the unthreaded part of the
>>> bolt shank bottom out before clamping the gear properly.
>>>
>>> It was just by sheer luck that I noticed. I got a box with random arp
>>> bolts from Summit today, and one of them was a new cam bolt. The
>>> supplied washer is slightly thinner than the stock washer, and when I
>>> tried to bolt down the gear, the bolt wasn't even close to reach the
>>> washer before it couldn't be threaded anymore.
>>>
>>> I compared it to the old cast iron flat tappet Crane cam, and the
>>> threads starts about 0.78" down the hole, and the bolt can be threaded
>>> almost to when the bolt head reaches the cam, if no gear is in place. On
>>> the new cam the threads starts 0.31" down the hole.
>>>
>>> Using the old bolt I get about 1/4 turn after the bolt touches the
>>> washer before the bolt bottoms out in the cam core.
>>>
>>> Is this a common problem, and are there any special short bolts for 
>>> this?
>>>
>>> Thomas
>>>
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> 
> 

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    Asa Jay & Shelley Marie
    Laughton - Spokane, WA
      1973 Pantera L 5533
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