[s-cars] Sequential Turbocharging

[djdawson2 at aol.com]

I'm afraid I'll have to opt out... for simple real estate issues.  Of course, someone could just place a turbo well above the hood like that Honda picture someone posted as a Friday laugh a while back.
 
Detroit Deisel used a turbo feeding a blower on top of a V configuration engine from WW2 until very recently.  No special valving, and it worked quite well... serving duty in arena where the competition was using engines of much larger displacement to do the same job.
 
Dave 
 
-----Original Message-----
From: Richard Tanimura <richard.tanimura at gmail.com>
To: Mark Strangways <Strangconst at rogers.com>
Cc: s-car-list at audifans.com
Sent: Fri, 6 Jan 2006 16:59:25 +0100
Subject: Re: [s-cars] Sequential Turbocharging


Hey Mark,

Let's point fingers and name names. I can imagine Trevor trying and maybe
Dawson. And Mike Peterson for the fun of it.

I don't follow your reasoning on the intake side though.

Snip ----
I would first start with a custom intake manifold, small long diameter
runners for the small turbo, and then a flap and a large volumetric are for
the big turbo. The idea would be to set the flap with spring pressure to
require the big turbo to overcome to open it.
Second would would involve plumbing the small turbo's turbine and wastegate
into the big turbo's turbing and wastegate. Then one would set the wastegate
on the small turbo to open while the compressor is still in the effiecient
range of the turbo. Say never let it see much more than 16 PSI, therefore
not needing a intercooler and the added space and plumbing it requires.
-- snip ---
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