(rx7) Belt driven superchargers and the rotary

[dom]

Yea we are probably straying off topic but...

There are potentially many snags in a single turbo PP motor. I was actually
jokingly suggesting a NA PP motor, in race trim you are looking at 340 FWHP.
That's from 1.3l for all you piston guys :-) Not a huge amount compared to a
single turbo, but it might be enough for your needs. As far as turbo PP, I
only know of a handful, and I'm not impressed with their success. The Racing
Beat Bonneville car (242mph) was a 3 rotor PP turbo, this is only
disappointing in light of their success with a streetable 2nd gen (238mph)
that they ran, and then drove to new york 3000+ miles. Also the Scoot FD
from Japan, has a 2 rotor PP with a HKS T51-KAI that made 741 RWHP but
failed to break 200mph (199.6 or so). I do not know of any turbo PP cars
that were designed to turn :-)

One day I will have a turbo PP motor in something, not to race, just
because.
-Dom

-----Original Message-----
From: owner-diy_efi at diy-efi.org [mailto:owner-diy_efi at diy-efi.org]On
Behalf Of Chris Wilson
Sent: Wednesday, October 10, 2001 2:22 PM
To: dom
Subject: Re[2]: (rx7) Belt driven superchargers and the rotary


Wednesday, October 10, 2001, 6:42:36 PM, you wrote:


> The Camden is a roots style positive displacement blower, hence no
> intercooler. I have personally run a 7" at 10 psi on a 6-port GSL-SE motor
> in my rotary pick-up. The problem with superchargers in general on
rotaries
> is that the RPM range is to large. Any belt driven device that turns fast
> enough to produce boost off idle, is going to be spinning so fast above 8k
> that it will shred itself.

> The rotary responds very well to turbo charging because of the high
> frequency and energy of the exhaust pulses. Have you experienced failures
> from the thermal stress on the turbo? You could always go with a
peripheral
> port motor :-)
> -Dom

Are there any snags with peripheral ported single turbo FD3S engines? If
this is swaying too far from the lists purpose maybe we could take this
to e-mail? Interested in circuit race usage, a PP would fit the bill i
think, it's just that i have never read of PP engine that's
turbocharged, only NA ones. Thanks.


--
Best regards,
 Chris Wilson
mailto:chris at formula3.freeserve.co.uk
                                       http://www.formula3.freeserve.co.uk

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