Variable Compression, Variable Displacement you decide

[jb24 at chrysler.com]

Remember that Top Fuellers get something like 200 lbs. of downforce
from the rocket-like exhaust from their upturned headers.  Turbos just
can't do that for you.  Dragsters are all about getting that power to
the ground.

John Bucknell is jb24 at chrysler.com
---------------------- Forwarded by John R Bucknell/JTE/Chrysler on
02/19/98 01:32 PM ---------------------------

        owner-diy_efi @ efi332.eng.ohio-state.edu
        02/19/98 12:47 PM
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Subject: Re: Variable Compression, Variable Displacement you decide

>
> On Thu, 19 Feb 1998, Roger Heflin wrote:
>
> > I guess probably they don't run turbos because they would have to
run
> > something resembling an exhaust to run a turbo, and the backpressure
> > comming out of the turbo might hurt enough because they have to run
> > everything together, rather than run open pipes from each cylinder,
> > and also considering that they blow up superchargers and the
superchargers
> > aren't running really hot, it may be no one really wants to pay
> > for a turbocharger that can take the load and not explode.
>
> they also blow bits of engine straight out of the exhaust, which
> wouldn't make the turbo at the receiving end of it a very happy
> camper.
>
>    Bruno. (b.marzano at student.canberra.edu.au)
>
>        Diet sig: low bandwidth signature
>
I guess the other problem is I seem to remember they say the bigger
drag cars burn several sets of headers in a season, that would
seem to be a much more extreme enviroment that normal vehicles
have, and would probably require a more expensive design for a
turbo to last longer that 1 race.
   Roger