[DeTomaso] Valve job

[Dave Doddek]

A good machine shop should of cut the seat down for you but. . . You can
take a die grinder and bur bit and smooth the edge off of both seats.  You
never want sharp edges in the combustion chamber.  Just be carefull not to
nick your new seat faces.

Dave "Just cant find a good machine shop" D


At 11:33 AM 1/26/2008 EST, you wrote:
>Had a valve job done in which new oversized seats and valves were
required.  
>When the new seats were set, they set back outside the head  throat hole 
>leaving about a 1/16" machined lip from  the throat with a sharp edge.
This does 
>not seem to be a problem  with the intake as the cool air is going from
small 
>to big opening although the  edge might cause some small disturbance in the 
>short distance before it  goes around the valve. The exhaust concerns me
in that 
>the hot air is  hitting this machined sharp edge.  It would seem that this 
>would cause a  hot spot conducive to burning.    I thought this sharp lip
should 
> be smoothed somewhat.  Any thoughts?
> 
>Bill Vasser
>74 Pantera
>
>
>
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