Pete,
this is a colombian adaptation for a 80hp 912. The Colombians claim that
they turbo'd the 912 before rotax which might be true given the
topography. Truth is wierder than fiction in Colombia. Or it might not.
My guy makes the exhaust system. It has a small truck turbo (doesnt really
matter which) controlled by a vernier. A garret might be better but it
works fine as it it. My Savannah has a mitsuibishi turbo and my Europa has
an IVECO turbo. He also made the airbox and put in the oil supply and
scavenge for the turbo. You need a 914 fuel regulator.
The turbo is in the same place as the 914 turbo.
You need to fit the pressure normalizing tubes between the airbox and the
carbs and fit bigger main jets so it runs cooler. You need to tighten the
clamps on the carb rubber too. You need nitrile gaskets for the carb
bowls. There's some fun stuff in it too. There is a ball valve on the
oil inlet to the turbo which which stops the oil leaking out through the
turbo when the engine is shut down. This ball valve is always held in
place with the ball point pen spring.
The system uses the mechanical fuel pump from the 912 and an electric pump
which means that if you have an electrical failure the engine doesnt stop.
My engine will run at about 28" without the electric pump.
And that's about it. The net result is a turbo normalized 912 for less
than USD25k. I run mine at 33" unless I have a heavy nephew on board.
Yesterday we took off at 35".
Its pretty simple and the manual wastegate doesn't really complicate
things. You can control power with the wastegate or the throttle. I am
comfortable with this because I have been flying with one for 10 years now
in my Savannah. And in the worst case with no turbo and no electrical
system you still have a 912. You can see photos at
https://sites.google.com/site/europaconstructionwd/
Will
On Dec 25, 2017 07:52, "Pete" <peterz@zutrasoft.com> wrote:
>
> Happy holidays Will!
>
> "912 turbo" aftermarket? (Can we have more info?) or 914 turbo?
>
> Cheers and thx,
> Pete :)
>
> > On Dec 25, 2017, at 7:11 AM, William Daniell <
> wdaniell.longport@gmail.com> wrote:
> >
> > Yesterday I took off with my nephew who 220lbs, I'm 198 with full fuel
> making us 16lbs over mtow.
> >
> > .......and the density altitude at skgy (8500) was just under 10k. We
> climbed at 400/min to 10500.
> >
> > It is a remarkable machine.
> >
> > Happy holidays to all
> >
> > Will
> > HJ460
> > Tri 912 turbo airmaster
>
>
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