Sv: rayjay turbocharger

["Claus Vegener" <vegener@post7.tele.dk>]

No -  but the principle of through or blow through is to explain:
It is more easy to understand looking at a carburettet engine:
US muscle cars, dragsters use holley carb mountet at top of the blower.
The blower is integrated with the intake manifold and sucks the
air/gasoline through the carb. That don't fit under the hood!

A blow through system consist of an enclusure around the carb or the carb
have
been made gasoline and air teigh (from innerside presure)
The blow through principle is the one to use for fuel injected engines,
because you
have the air first, and at the latest point the fuel.
You can study the principle at Vortec, ATI ProCharger and Paxton.
The fuel pressure regulator "just" have to use the boost pressure instead
of the athmosphere as reffering pressure. Then the carb or fuel injectors
will give that more gas depending of boost. And if the belt to the
compressor wreck - no problem. The engine is the good old one.
But if you don't have knock sensor, you will have to reduce timing..

Claus  200QT20V Avant,
          Pachanga27 502"+ProCharger 7psi ,
         1 old and 1 very old  RangeRover


----- Oprindelig meddelelse -----
Fra: <jab86@cornell.edu>
Til: <quattro@audifans.com>
Sendt: 26. juli 1999 07:38
Emne: rayjay turbocharger


> Anybody ever hear of a BAE Turbosystems RayJay Turbocharger?  My friend
> has
> one that has just been rebuilt, and i don't see why i couldn't rig it to
> work on an I5, even though it was designed for a 4cyl. The BAE turbo
> kits, sold in the
> late 70's-early 80's used a RayJay turbo, without a wastegate.  The
> turbocharger was designed to provide boost parallel to the engine's
> RPM, thus always running at optimum pressure, yet not requiring a
> wastegate.
> Boost pressures normally produced by this system range from 7-10psi,
> dependant on the engine's RPM.  It comes with a carbon seal which allows
> it to be used in either the draw through or blow through configuration (i
> don't know what that means).
>
> I am curious how it would work on my 1990 80q.  It sounds like it works a
> little like a g-lader, so I am skeptical about reliability.  Would I have
> to have a custom chip made?  My friend only wants $250ish for it, and
> I figure that all I'd have to do would be to have a thick head gasket
> made to lower my compression, fabricate a manifold/exhaust system and
> monkey around with tuning (ie turbo camshaft, etc).  Sounds pretty lowish
> risk as far as a project goes.  I'm sure that there is some complication
> that I'm overlooking, but I'm sure somebody will point it out...
>
> Thanks in advance.
>
> -joe brown
> 1990 80q