DeTomaso Mailing List: October 99, Message #120

Every Flow bench I ever seen had a stand the head mounted to that
simulated a cylinder, even the one I built.  My has a one made of
polycarbonate tube 4.0" ID. Now how do you simulate a moving piston? 
Any Ideas?

JB
("` - ' ' - / " ) .___ . . - - ' ' ''` - .
  `6_ 6      )      ` - .     (          ) . ` - . __ . `
  (_Y_. ) '     `. _     `)     ` . _ `)   ` ` - . . - '
   ` - - '   _. . -_/     / - - ' _ . '  , ' 
 

Mary Taphorn wrote:
> 
> An honest question,  All these cylinder head flows got me thinking.
> 
> When the flow rate of a cylinder head is tested, does the exercise replicate
> the existence of a cylinder wall shrouding the valves?  If not, I would be
> suspect of any comparison of an inline valve configuration as compared to
> the Cleveland's canted valve arrangement.  As we know, the Cleveland offers
> the advantage of minimizing cylinder wall interference to flow as the valve
> extends into the head.
> 
> John T