If you followed the
string of posts recently they
gave general info on adapting
the Renesis pump to the
eariler 13B
rotarys.........Mark Steitle
was the first to retrofit it
to his Cosmo 20B/ Lancair
ES..........There
was a lot of chatter (a lot
from me) concerning how to do
it...........Since then Mark
has provided a photo
and some general
instructions how he did
it...............The "Cosy
Girrrls" are currently in
process adding
the Renesis pump to their
93-95 13BREW
engine................Chrissi
said they would take photos
for our
group when
available.............Basically
you purchase a 2004-08 Renesis
front engine cover which has
the
waterpump hsg built into
it................Next you
bandsaw the waterpump hsg from
the rest of the cover and
after a bit of grinding,
fileing, etc you clean up all
the rough sharp edges and make
it presentable enough
to mount on your
engine.................At this
point it looks like all but
one of the pump hsg mount
holes has
matching studs on the Cosmo
20B (Mark helicoiled that one
and bolted
it)..............The Cosmo 13B
and
93-95 13BREW have the same
mismatch plus one
other.............As you face
the front of the engine the
far left hand stud is too
low but both these engines
have a machined pad just above
this stud that is not
drilled and
threaded...............The
reason being the stock Cosmo
20B pump is slightly larger in
diameter
and these engines use that
pad but it is not threaded on
the Cosmo 13B and 93-95
13BREW.............
That is the way I
understand the situation at
this point.......Whatever I
have wrong about this
explanation
I am going to have to
depend on Mark and the "Cosy
Girrls" to correct me as I
have only done a quick
and dirty fit on one of my
86-91 13B front side
housings...........I am 55
miles from my hangar and my
day
job (caretaker for mother)
did not allow me extended time
to check all this
out.........I have a Cosmo 13B
but the front cover is not
removed and I lacked the time
the day I
did this............That part
was just eyeball
measured.........The
Renesis pump can probably be
adapted to the 86-91 13B but
will involve some more
work as two studs do not
match and might compromise
pump integrity and rigidity
for belt tension loads.
David the "Mazmart" pump
is a stock pump with their
proprietary impeller installed
on it...........Photos
of 20B and 13BREW front
hsgs attached...
Please Jump in here Mark
and Chrissi give us the
straight info and correct
anything I have wrong
!!.........
Kelly Troyer
"DYKE
DELTA JD2" (Eventually)
"13B ROTARY"_ Engine
"RWS"_RD1C/EC2/EM2
"MISTRAL"_Backplate/Oil
Manifold
"TURBONETICS"_TO4E50 Turbo
From:
David Moyer <davidm@remconinc.com>
Sent:
Mon, December 27, 2010
11:45:27 AM
Subject:
[FlyRotary] Re: Mazmart
Renesis Waterpump
Very nice to get just want
you want for Christmas. I
got a few myself for my
Cozy. Wondering if that
will fit my Cosmo engine.
Are the pumps the same?
Sure looks much more
substantial and should
provide much better flow.
David Moyer