<VV> Need some discussion on "Jet", high tech Ceramic coatings

[Dale Dewald]

Hello Bob,

It would seem that you need to get some measured amount heated air flowing 
across the bellows all of the time in order to get them to respond 
properly.  I would suggest the following experiments:

1) Insert a screw, small block, or something that will block open the 
damper doors a small amount--perhaps 1/4" or so.  This might allow enough 
flow to heat the bellows.

2) Try readjusting the damper doors to be barely closed when cold, or to 
some position between this and factory specifications. This however, will 
defeat some of the purpose of the lower shrouds and damper doors.

3) I think the best idea would be to punch several small holes or cut some 
louvers into the lower shrouds immediately below the bellows.  This should 
allow direct air flow from the cylinders/heads to act on the bellows. Do 
you have an extra set of [junk] shrouds to experiment on?  Louvers would 
seem to be the best way to minimize entry of water if you happen to be 
driving in rain.

Dale Dewald
Hancock, MI

At 07:48 6/02/2008 -0400, Bob Bauer wrote:

>Wht I am finding out is that they seem to insulate to well.  With the 
>shrouds on, I can't get enough temperature to open the bellows.  As I run, 
>the temperature starts to build to a point where I begin to 
>overheat,  Temp's around 400  in a Monza  110 horse.  Then the temp drops 
>sharply to about 300 then slowly climbs back to 400 then drops back to 300.
>   What I have been able to discover is that the coating insualtes so 
> well, the bellows are not getting enough heat to cause them to open.  The 
> motor begins to overheat, to a point where they do open, then as the temp 
> drops, they close again allowing the heat to build up.  And so on.
>