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From: "Russell Duffy" <13brv3@bellsouth.net>
To: "'Rotary motors in aircraft'" <flyrotary@lancaironline.net>
Subject: RE: [FlyRotary] New to the list, and some questions.
Date: Wed, 23 Mar 2005 20:26:49 -0600
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planning stages of building a Van's RV-7, and the current powerplant =
plan is
to use a 6-port Renesis on a Conversion Concepts mount.  I want to get a
nice, easygoing 200hp out of the Renesis so I can be at the top end of =
the
power recommendations for the RV-7 without having to plumb turbos and
intercoolers and to keep it generally as simple as possible.

Welcome John.  Excellent plan.

One, is the oilpan bolt pattern on the Renesis the same as
the 13b?

No.  I think the front cover is all that's different though. =20

Will the Conversion Concepts mount work for the Renesis without
modification, and if not, what mods are necessary?

Best to talk to Fred about that.  I'm sure he's either got a new mount, =
or
will have one soon that works for the Renesis. =20

Two, (big newbie question here), where do you actually GET
a Renesis?  Is there a crate version available, and from
whom?  Latest price?

You can buy one direct from Mazda, but I'd recommend calling Bruce
Turrentine instead.  Last I talked to him, he was selling the engines =
for
$5700, which includes having him personally go through the engine.  If I
were starting over, that's probably the way I'd go.  =20

(On this list and the Canard Aviation forum, it's been between =
$5700-$6200)
Has the RX8 been out long enough to make it worthwhile sourcing one from
auto wreckers, or are they being snapped up by speed shops and racers?

I've seen some used engines for sale, but they aren't necessarily a =
bargain.
Eventually, there will be more deals out there though.

Is the Renesis overkill?  Can i get 200hp out of a n/a
13b without a lot of exotic modification? (I've been
reading the posts on injectors, intake tuning,
turbocharging, etc).

Truth be told, I don't think the Renesis will really outrun the 13B in =
our
rpm range.  I think Mazda just made a better intake, and turned up the =
rpms.
There are certainly some improvements in the Renesis, but it's not light
years ahead in performance.   It's absolutely possible to get 200 HP =
from a
13B at less than 7500 rpm, with nothing more than a street port, and a
decent intake and exhaust.   Tracy was doing it, and I expect to be as =
well.
All that being said, the Renesis is clearly the future of the rotary, =
and
there's no downside with the exception of a bit higher price at the =
moment.
I think the Renesis is a slam-dunk choice for folks starting out now. =20

Cheers,
Rusty (must be Ed's nap time)
Mazda 13B rotary powered RV-3 (flying)
Kolb Slingshot (Mazda single rotor project)
Sonerai-IIL (next project in line)

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<P><FONT size=3D2>planning stages of building a Van's RV-7, and the =
current=20
powerplant plan is to use a 6-port Renesis on a Conversion Concepts =
mount.&nbsp;=20
I want to get a nice, easygoing 200hp out of the Renesis so I can be at =
the top=20
end of the power recommendations for the RV-7 without having to plumb =
turbos and=20
intercoolers and to keep it generally as simple as possible.</FONT></P>
<DIV><FONT size=3D2><FONT face=3DArial color=3D#ff0000 size=3D3>Welcome =
John.&nbsp;=20
Excellent plan.</FONT></DIV>
<P>One, is the oilpan bolt pattern on the Renesis the same as<BR>the =
13b?</P>
<P><FONT face=3DArial color=3D#ff0000 size=3D3>No.&nbsp; I think the =
front cover is=20
all that's different though.</FONT>&nbsp; </P>
<P>Will the Conversion Concepts mount work for the Renesis without =
modification,=20
and if not, what mods are necessary?</P>
<P><FONT face=3DArial color=3D#ff0000 size=3D3>Best to talk to Fred =
about that.&nbsp;=20
I'm sure he's either got a new mount, or will have one soon that works =
for the=20
Renesis.&nbsp; </FONT><BR><BR>Two, (big newbie question here), where do =
you=20
actually GET<BR>a Renesis?&nbsp; Is there a crate version available, and =

from<BR>whom?&nbsp; Latest price?</P>
<P><FONT face=3DArial color=3D#ff0000 size=3D3>You can buy one direct =
from Mazda, but=20
I'd recommend calling Bruce Turrentine instead.&nbsp; Last I talked to =
him, he=20
was selling the engines for $5700, which includes having him personally =
go=20
through the engine.&nbsp; If I were starting over, that's probably the =
way=20
I'd&nbsp;go. </FONT>&nbsp; </P>
<P>(On this list and the Canard Aviation forum, it's been between =
$5700-$6200)=20
Has the RX8 been out long enough to make it worthwhile sourcing one from =
auto=20
wreckers, or are they being snapped up by speed shops and racers?</P>
<P><FONT face=3DArial color=3D#ff0000 size=3D3>I've seen some used =
engines for sale,=20
but they aren't necessarily a bargain.&nbsp; Eventually, there will be =
more=20
deals out there though.</FONT><BR><BR>Is the Renesis overkill?&nbsp; Can =
i get=20
200hp out of a n/a<BR>13b without a lot of exotic modification? (I've=20
been<BR>reading the posts on injectors, intake tuning,<BR>turbocharging, =

etc).</P>
<P><FONT face=3DArial color=3D#ff0000 size=3D3>Truth be told, I don't =
think the=20
Renesis will really outrun the 13B in our rpm range.&nbsp; I think Mazda =
just=20
made a better intake, and turned up the rpms.&nbsp; There are certainly =
some=20
improvements in the Renesis, but it's not light years ahead in=20
performance.&nbsp;&nbsp; It's absolutely possible to get 200 HP from a =
13B at=20
less than 7500 rpm, with nothing more than a street port, and a decent =
intake=20
and exhaust.&nbsp;&nbsp; Tracy was doing it, and I expect to be as=20
well.&nbsp;&nbsp;All that being said, the Renesis is clearly the future =
of the=20
rotary, and there's no downside with the exception of&nbsp;a bit higher =
price at=20
the moment.&nbsp; I think the Renesis is a slam-dunk choice for folks =
starting=20
out now.&nbsp; </FONT></P>
<DIV><FONT face=3DArial color=3D#ff0000 size=3D3>
<DIV align=3Dleft><FONT face=3DArial>
<DIV align=3Dleft><FONT face=3DArial>Cheers,</FONT></DIV>
<DIV align=3Dleft><FONT face=3DArial>Rusty (must be Ed's nap =
time)</FONT></DIV>
<DIV align=3Dleft><FONT face=3DArial>Mazda 13B rotary powered RV-3=20
(flying)</FONT></DIV>
<DIV align=3Dleft><FONT face=3DArial>Kolb Slingshot (Mazda single rotor=20
project)</FONT></DIV>
<DIV align=3Dleft><FONT face=3DArial>Sonerai-IIL (next project in=20
line)</FONT></DIV></FONT></DIV></FONT></DIV></FONT></BODY></HTML>

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