Well funny you should mention that. In Colombia where experimental
aviation
is not subject to quite so many restrictions they have been
turbocharging
912 (normal) for many years ' in fact before the 914 came out. This
was
originally developed to deal with the high altitudes.
Basically what they do is bolt a mitsubishi car turbo on to a stock 912.
I
have one on my zenith and it works well. It has some interesting
features
such as retaining the mechanical pump in series with an electric boost
pump.
It will run at 22=94 with just the mechanical pump. With both fuel
pumps
running at 8500ft this arrangement is good for 33=94 of manifold
pressure.
The waste-gate is purely mechanical ' no electronics at all.
This issue for the Europa is the that the engine is rather long because
the
turbo sits behind the crankcase.
Will
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com] On Behalf Of craig
bastin
Sent: Monday, January 14, 2008 06:42
Subject: RE: Europa-List: Rotax 912/914
I wonder if anyone has switched pistons or thrown a head spacer in a
912s to
reduce the compression and then turbo charged it. With the extra
capacity if it was done correctly it should be good for about 130hp or
so.
Could be a good way to go
craig
-----Original Message-----
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com]On Behalf Of Simon Smith
Sent: Sunday, 13 January 2008 7:14 AM
Subject: Re: Europa-List: Rotax 912/914
Not Correct!
>From the Rotax aircraft website at HYPERLINK
"http://www.rotax-aircraft-engines.com"www.rotax-aircraft-engines.com
Both
the 912 and the 914 are 1211cc and 9:1 ratio. The 912S is different at
1352cc and 10.5:1
All three use the same crankshaft and connecting rods (they are a single
unit and cannot be separated) p/n 888164. The 912 and 914 used 79.5mm
dia
piston p/n 996549 and the 912S uses 84mm p/n 88838. there is also a
difference in the piston pins and rings. Some earlier 912 and 914
engines
use crank p/n 996583.
cheers
Simon
On 12 Jan 2008, at 16:25, rlborger wrote:
Curtis & other Europaphiles,
Oops, hit the wrong button on that previous transmission.
The main difference between the 912 and 914 are different compression
ratios
due to the different pistons and (I believe) connecting rods. The three
engines 912, 912S and 914 all have different compression ratios.
Of course, the exhaust systems are quite different due to the presence
of
the turbo.
There are also differences in the lube system to support the special
lubrication needs of the turbo.
There may be other differences.
Good building and great flying,
Bob Borger
Europa Kit #A221 N914XL, XS Mono, Intercooled 914, Airmaster C/S
HYPERLINK
"http://www.europaowners.org/N914XL"http://www.europaowners.org/N914XL
(90%) tail kit done, wings closed, cockpit module installed, pitch
system
in, landing gear frame in, rudder system in, outrigger mod in, Fuselage
Top
on, lift/drag/flap pins in, wing incidence set, tie bar in, flap drive
in,
Mod 70 done. Baggage bay in. Flaps & Main Gear complete. Mod 72
complete.
Instrument panel complete, except for testing. Rotax 914 installed (for
the
3rd time). Airmaster Prop installed. Electrical complete, except for
testing. Fuel system complete except for testing. Working in - 32
Tail, 34
Door Latches & 35 Doors, 37 Interior & Finishing. Airmaster arrived 29
Sep
05. Seat arrived from Oregon Aero. E04 interior kit has arrived and is
being installed.
3705 Lynchburg Dr.
Corinth, TX 76208
Home: 940-497-2123
Cel: 817-992-1117
On Jan 12, 2008, at 9:49 AM, Curtis Jaussi wrote:
Does anyone understand the real differences between the Rotax 912ul and
the
914? As far as I can determine, they are the same engine except for the
turbo. The displacement and the pistons seem to be the same. is the
914
beefed up in some way to take the extra strain from the turbo? Has
anyone
heard of an after market turbo for the 912?
href="http://www.matronics.com/Navigator?Europa-List";>http://www.matron
ics.c
om/Navigator?Europa-List
href="http://forums.matronics.com";>http://forums.matronics.com
href="http://www.matronics.com/contribution";>http://www.matronics.com/c
ontri
bution
href="http://www.matronics.com/Navigator?Europa-List";>http://www.matron
href
"http://forums.matronics.com";>http://forums.matronics.com
href="http://www.matronics.com/contribution";>http://www.matronics.com/c
"http://www.matronics.com/Navigator?Europa-List"http://www.matronics.com/
Nav
igator?Europa-List
"http://forums.matronics.com"http://forums.matronics.com
"http://www.matronics.com/contribution"http://www.matronics.com/contribut
ion
12-Jan-08
14:04
12-Jan-08
14:04
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