[DeTomaso] Engine Question

[sean mundy]

No smoke coming from the engine.  Oil on the dipstick looks okay.  The motor ran a max total of 15sec after I initially heard the noise.  
The heads look fine as tops of the valves and rockers/springs look okay.  
I have taken the manifold off now and can see the intake valves on 1-4.  They all look okay.
Seems like I have a busted #4 exhaust valve.
 

> From: detomasoregistry at gmail.com
> To: seanmundy at hotmail.com; detomaso at realbig.com
> Subject: RE: [DeTomaso] Engine Question
> Date: Sat, 7 Jan 2012 15:31:49 -0800
> 
> Sean,
> 
> I don't think you need my new Proto-cam to guess what the chamber looks like.
> You show quite a bit of impact to the spark plug.
> No cracks in the cylinder wall as evidenced by oil/water mixed together etc...
> Did you notice any oil exhaust smoke during deceleration (valve guide leak)?
> There are still two valve stems in place on #4?
> 
> Good Luck,
> 
> Chuck
> 
> 
> 
> -----Original Message-----
> From: detomaso-bounces at realbig.com [mailto:detomaso-bounces at realbig.com] On Behalf Of sean
> mundy
> Sent: Saturday, January 07, 2012 2:33 PM
> To: detomaso at realbig.com
> Subject: [DeTomaso] Engine Question
> 
> 
> Hi all,
> We had a nice Winter day here in Seattle a couple weeks ago.
> I decided to go for a quick spin and get the car warmed up and the juices flowing. 
> Drove for about 10miles on the freeway and got off my exit and shifted down to 3rd and was
> cruising at about 30mph. 
> Suddenly started hearing a clickity clacking noise coming from behind me. 
> Immediately pulled over and shutdown and got out of the car to see what was going on. 
> Didn't run over anything and everything was where it was supposed to be. Hmm.
> Get back in car and start the engine. Noise is still there so immediately shut engine
> off. 
> Obviously something is wrong with the engine. Call for flatbed and get it back home.
> Start autopsy by removing the valve covers and see nothing out of place.
> Remove spark plugs so I can turn the engine over by hand and see if I can hear anything.
> Uh Oh.
> See pictures of number 4 spark plug
> http://poca.com/index.php/gallery/?g2_itemId=34547
> http://poca.com/index.php/gallery/?g2_itemId=34550
> 
> This looks obviously looks bad and I'm guessing that I'm a victim of the stock 2piece
> breaking in half and
> bouncing around like popcorn inside the cylinder.
> What do you think?
> Next step, take the heads off and see how bad it really is.
> 
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