[DeTomaso] Pantera fall down go boom :<(

[Will Kooiman]

I am certainly not an expert on this.  I appreciate that materials play a
big role in compatibility, but I don't have a clue about which are
compatible.

But, I can see a pattern.  I've seen a lot of failures with 351C
hydraulic-flat, solid-roller, and hydraulic-roller engines, both in the
valve train and the distributor gear.

I don't remember seeing any with solid-flat tappets.

I don't believe that Mike's distributer gear failed because of the rev
limiter.  I also don't believe it was the oil pump.  The gear should be
strong enough for the pump.  It is on all of the other distributer driven
pumps.  Granted, a lower pressure pump might allow the gear to live.  The
same is likely true for the oil hole drilled in the plug.

I do believe, however, that I need to get ready for work.  And that's all I
believe this morning.

-----Original Message-----
From: detomaso-bounces at realbig.com [mailto:detomaso-bounces at realbig.com] On
Behalf Of Charles Engles
Sent: Monday, June 20, 2011 8:09 AM
To: 'Will Kooiman'
Cc: detomaso at realbig.com
Subject: Re: [DeTomaso] Pantera fall down go boom :<(

Dear Will,


              I am glad you said that.   I was thinking along the same
lines.  It was my thought that if one assumes that the gears were compatible
or almost compatible and if you assume that bouncing off the rev limiter
does indeed stress that gear interface, then my very amateur question is
whether the mechanical function of the hydraulic roller cam, which must be a
bit different from a flat tappet, is a factor in the failure.   I certainly
don't know, but I know just enough to voice the question.  


                 Warmest regards,  Chuck Engles


"Research is what we're doing when we don't know what we're doing."   Verner
Von Braun



-----Original Message-----
From: detomaso-bounces at realbig.com [mailto:detomaso-bounces at realbig.com] On
Behalf Of Will Kooiman
Sent: Sunday, June 19, 2011 11:44 PM
To: detomaso at realbig.com
Subject: Re: [DeTomaso] Pantera fall down go boom :<(

Only a car guy gets it.

Sometimes it's more fun to break down.

It still stinks, but that's the hobby.

BTW, that's why I don't like roller cams.  I know, flat tappets have issues
too, but ~I've~ never had issues with a flat tappet cam.  Until I do, I'll
probably stay away from rollers.

-----Original Message-----
From: detomaso-bounces at realbig.com [mailto:detomaso-bounces at realbig.com] On
Behalf Of MikeLDrew at aol.com
Sent: Sunday, June 19, 2011 11:32 PM
To: asajay at asajay.com; detomaso at realbig.com
Subject: Re: [DeTomaso] Pantera fall down go boom :<(


In a message dated 6/19/11 21 20 59, asajay at asajay.com writes:


> OH, and yea... sorry to hear you had a break down, it's never fun when
> that happens.  Thank you for sharing so we can all learn from these 
> things.
> 

I have to admit, it was actually kinda fun. :>)

That is, it added a level of interest to an otherwise fun but ordinary 
track day.   Once the car came back to the paddock, people came out of the 
woodwork to offer help and advice, and the further we dug down, the more the

fix-it theories changed, until it became apparent that I was dead in the
water.  
 But until that point, people were volunteering to race into Reno (30 miles 
away) to go to the Summit website for me, offering up 'pet' machine shops 
to do a quickie distributor gear change, etc. etc.

There was a palpable, shared feeling of disappointment when it became 
obvious that I was dead for the weekend.   People were really rooting for
the car 
to be running again by the end of the day.   So that was a lot of fun to be 
a part of. 

I have to admit, for me it would have been rather more fun if it was 
somebody ELSE's car that we were working on, but still...:>)

Mike
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