[Roadsters] quirky supercharger set-up picture, R-16 option?

[Embarq Customer]

You can suck through or blow through.  The blow through arrangement is a hassle because you have to put the carb inside a pressurized box.  Otherwise it shoots gas out all the vents and shaft seals.  You also have to vary the fuel pressure based on the amount of boost.  The suck through design works pretty well but with an intercooler you have a bomb waiting for the first backfire.


----- Original Message -----
From: "Gary McCormick" <gkmcc at sbcglobal.net>
To: datsun-roadsters at autox.team.net, "Fergus P (AS)O'Farrell" <Fergus.OFarrell at ngc.com>
Sent: Monday, September 21, 2009 3:37:54 PM GMT -06:00 US/Canada Central
Subject: Re: [Roadsters] quirky supercharger set-up picture, R-16  option?

Isn't this setup kinda backwards, i.e., isn't a supercharger usually upstream
of the carburetor or fuel injection body, in order to pressurize the carb/FIB?
I mean, that's why they call 'em blowers, isn't it? This looks like a suck (as
opposed to blow) arrangement.

Gary McCormick
San Jose, CA

--- On Mon, 9/21/09, O'Farrell, Fergus P (AS) <Fergus.OFarrell at ngc.com>
wrote:

From: O'Farrell, Fergus P (AS) <Fergus.OFarrell at ngc.com>
Subject: [Roadsters] quirky supercharger set-up picture, R-16 option?
To: datsun-roadsters at autox.team.net
Date: Monday, September 21, 2009, 1:08 PM

Along the lines of "another quirky thing to do to a small engine, anyone
recognize the supercharger on this VW engine?  ( roots type, I think
they call it, intake charge definitely not cooled)

http://cncpics.com/v/090905/20090912/DSC02229.JPG.html

Tiny 1 bl carb sitting on top, and looks like single port intake
manifold.  When the race reg people - see previous pics of car - stated
"stock carb req'd", I bet they never thought anyone would try to
pressurize a stock carb.

Just more ruminations,
Fergus O
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