[DeTomaso] Autopsy

[Paul - Home]

I see two possibilities.

1. The rod bearings were already wearing out before you got to the BBOR. 
  The engine blew because of a bearing failure as opposed to something 
being sucked into the intake.

2. As part of the engine blowing, it opened up an oil journal and caused 
a lack of oil pressure.  The engine is still spinning but now without 
the appropriate amount of oil, resulting in excessive wear.  There is 
more wear on 3&7, because those rods aren't moving around like they 
should because there is a piston missing and the one rod is spaghetti.

I would think that #2 seems like a long shot due to the limited amount 
or revolutions the engine probably made after it blew.

Paul
#9270

Will Kooiman wrote:
> The dist gear looked fine.  The teeth were a little sharper than I'd like,
> but not bad.
> 
> I haven't taken the front cover off yet.
> 
> I'm still at a loss for the cause.  I figured I sucked debris into the open
> Webers, but that doesn't explain why the #3/7 rod journal is badly
> overheated.  I'm okay with the rest of the journals being worn.  That's what
> I'd expect with debris being pumped all through the engine. I just don't get
> why #3/7 would be special.
> 
> I'll take the rest apart this week and post pics.
> 
> I can't wait to get this 351C in the dumpster so I can get my new 307 Chevy
> installed.
> 
> Will.
> 
> -----Original Message-----
> From: detomaso-bounces at realbig.com [mailto:detomaso-bounces at realbig.com] On
> Behalf Of asajay at asajay.com
> Sent: Monday, May 19, 2008 1:43 PM
> To: detomaso at realbig.com
> Subject: Re: [DeTomaso] Autopsy
> 
> Will,
> 
> I can't remember if you said anything about it, but...
> 
> Is the distributor gear intact?  How about the timing chain/gears?   
> I'm very anxious for your to take the pump apart as well.
> 
> I think we need more details to get at the root cause, but I think  
> folks are right, you ended up starving for oil in a couple places,  
> though I don't know that contributed to the failure, it could.
> 
> Asa Jay
> 
> Quoting JDeRyke at aol.com:
> 
>> In a message dated 5/18/08 11:49:58 PM, wkooiman at earthlink.net writes:
>>
>>> What about the melted rod bearing and the black journal?  The #3 + #7
>>> journal obviously had problems.  Have you ever seen a rod journal   
>>> overheat when
>>> you lose a piston?
>>>
>> No, only when a stock oil pan was used in a Pantera, or when the oil pump
>> driveshaft broke first. FWIW- J Deryke
>>
>>
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