Re: Big block head- why and how

[MO <micher@xxxxxxxxxxxxxxx>]

 Scott, it is obvious that you know what you are talking about.
Exactly the kind of info I was looking for.  I know what you mean by
the coke forming from oil and heat, that cavity was packed with it. .
It is not only the looks, but also a screw, carb jet, etc. trap.  I am
thinking of covering it with screen wire or maybe putting part of a
pot scrubber copper pad in it. Air and heat would go through that very
well I am thinking. Also easy to take out and clean..
Thanks ...................MO

On Sep 15, 10:37 pm, scott preston <penstarperforma...@xxxxxxxxx>
wrote:
> It,s not a good idea to cover or block this area up.You have blocked the
> exhaust cross over port up,that,s great,but blocking the C shaped
> heat dissipation area is bad.That area was made to get rid of
> the excessive heat from the cross over port transferred to the metal,so it
> would not transfer to the above head area burning the oil in the valve
> cover area.The heat that get,s transferred to the by blocking this heat
> exchange area will coke the oil,causing the oil to turn to a carbon type
> material that brakes off and lands in the pan,then into the oil pickup,you
> figure it out from there.If you want to plug it up,go a head,it,s your
> motor,but since I was a employee of Ray Barton race engines,I just might
> have a little bit of in sight,Mrmopartech
>
>
>
> On Sat, Sep 15, 2012 at 10:09 PM, <Dodger7...@xxxxxxx> wrote:
> > **
> > I am thinking the last time this topic was brought up that the consensus
> > was to use JB weld,,,,as I recall JB is rated somewhere between 500-600
> > degrees
>
> >  In a message dated 9/15/2012 8:26:38 P.M. Central Daylight Time,
> > mic...@xxxxxxxxxxxxxxx writes:
>
> > Yes, Dodger and Mike are correct. . I did not know if this cavity is
> > essential. I really don't like it, but Dodgers pic would be OK. Dodger
> > can you give me more info on that pic?  Paint tomorrow after lunch
> > when the air temp is a little warmer.  Gary, I will send some pics,
> > but you will see a nekkid engine! no chrome or polished aluminum at
> > all!........................MO
>
> > On Sep 15, 5:54 pm, Mike & Deb <mdlefe...@xxxxxxxxxx> wrote:
> > > Steve,
> > > I think Chrysler designed the crossover passage like that to insulate
> > the rest of the area from the exhaust heat but it does collect trash! Looks
> > like Dodger found something to fill it with.
> > > Mike LeFevre
>
> > > On Sep 15, 2012,MO<mic...@xxxxxxxxxxxxxxx> wrote:On the intake side at
> > the middle is the crossover heat port. around
> > > that is a U shaped cavity that extends down inside the head and ends
> > > there. What is the purpose of that?? My intake gasket is the type
> > > that blocks off the heat port hole. but part of the U cavity is still
> > > showing. It looks bad and would be a small bolt-screw trap. In
> > > addition to getting debris, oil and water held in it. Is that cavity
> > > neccessary and if not, has anyone here blocked off or filled that
> > > cavity?
> > > Today I finised assembly of the engine and now it is ready for
> > > paint. HOOO- HAAAW!! .....................MO
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