Re: Dry Ice

[Larrybsp@aol.com]

from:larrybsp@aol.com (Larry Stark)

               Kevin,
                   Aluminum has a very high heat transfer rate so there would 
be no sharp thermal gradients in the manifold to create stresses to cause it 
to crack. Now I wouldn't try it on some of the new plastic manifolds. My 
guess is they would warp big time.
                                                                          
Larry


> > depends on how you use it. There is nothing in the rules as far as I
> > know  about using dry or regular ice to cool the engine intake between
> > runs in any  class. If this wasn't done I don't think there would be a
> > turbo'd Mazda RX-7  that wouldn't have blown up on 100 degree days. The
> 
> I'm always surprised to see people doing that with regular ice without
> cracking the manifold.  Can you really hit a 200 degree manifold with -100
> degree dry ice and not shatter the thing??
> 
> KeS